Li-alloys tsa aluminium-lithium (Al-Li) tsa maemo a holimo tsa sefofane li bohlokoa indastering ea sepakapaka ka lebaka la motsoako oa tsona o ikhethang oa sekhahla se tlase, matla a ikhethileng, ho hanyetsa kutu, le thepa e matlafalitsoeng ea mokhathala. Li-alloys tsena, tse kang AA2050, AA2099, le AA2195, li ntse li sebelisoa le ho feta likarolong tsa bohlokoa tsa meralo joalo ka liphanele tsa fuselage, matlalo a mapheo le mojaro-ho jara liforeimi, moo moralo o bobebe le ts'ebetso ea mochini e leng tsa bohlokoa. High-speed milling (HSM), a sebetsa ka ho nepahetseng machining ts'ebetso e khetholloang ka lebelo le phahameng la ho itšeha le litefiso tsa phepelo, e sebelisoa haholo ho bopa li-alloys tsena hore e be li-geometri tse rarahaneng tse nang le mamello e thata. Leha ho le joalo, litšebelisano tsa li-multi-fisiks nakong ea HSM-e kenyelletsang liketsahalo tsa mochini, mocheso le microstructural-li hlahisa mathata a bohlokoa, haholo-holo ho laola ho fetoha ha mocheso oa mocheso le likhatello tse setseng holim'a metsi. Lintlha tsena li ama haholo boleng ba karolo e entsoeng ka mochini, bophelo ba mokhathala, le ts'ebetso e akaretsang ea ts'ebeletso.

Ho rarahana ha HSM ho bakoa ke ho kopana ha matla a ho itšeha, ho hlahisa mocheso o sa tsitsang, deformation ea polasetiki, le recrystallization e matla, tseo kaofela li tlatsetsang liphetohong tsa microstructural le maemo a setseng a khatello ea kelello. Thermal texture evolution e bua ka nts'etsopele ea sebopeho sa crystallographic se tsamaisoang ke ho futhumatsa le ho senyeha ha libaka, ha likhatello tse setseng tsa bokaholimo li bakoa ke litlamorao tse kopaneng tsa meroalo ea mochini le li-gradients tsa mocheso. Ho utloisisa le ho bolela esale pele liketsahalo tsena ho hloka mekhoa e tsoetseng pele ea ho etsa mohlala oa fisiks e ngata e kopanyang mechanics ea computational, thermodynamics le mahlale a thepa. Mefuta e joalo e thusa bafuputsi le lienjineri ho ntlafatsa maemo a machining, ho ntlafatsa boleng ba bokaholimo, le ho fokotsa likoli joalo ka ho putlama kapa ho sotha likarolo tsa sepakapaka.

Sengoliloeng sena se fana ka tlhahlobo e felletseng ea mekhoa ea ho etsa mohlala oa fisiks e mengata bakeng sa ho sekaseka kholo ea moetso oa mocheso le khatello ea masala a holim'a metsi nakong ea HSM ea Al-Li alloys. E kopanya tsoelo-pele ea morao-rao mekhoeng ea liteko le ea khomphutha, ho tsoa ho finite element analysis (FEA), mehlala ea polasetiki ea kristale, le lipapiso tsa karolo ea karolo. Puisano e hlophisitsoe ho sebetsana le thepa ea lisebelisoa tsa Al-Li alloys, mechanics ea HSM, mekhoa ea ho etsa mohlala oa mocheso le mochine, mekhoa ea ho iphetola ha lintho, mokhoa o setseng oa khatello ea kelello, le mekhoa e sebetsang ea ho ntlafatsa ts'ebetso. Litafole tse qaqileng li kenyelelitsoe ho bapisa thepa ea thepa, mekhoa ea mohlala, le liphello tsa liteko, ho netefatsa tlhahiso e tiileng le e thehiloeng saense.

Aluminium-Lithium Alloys: Sebopeho le Thepa

Kakaretso ea Al-Li Alloys

Li-alloys tsa aluminium-lithium li emela sehlopha sa lisebelisoa tse tsoetseng pele tse entsoeng ho fihlela litlhoko tse hlokahalang tsa lisebelisoa tsa sefofane. Ho eketsoa ha lithium, hangata ho tloha ho 0.5 ho isa ho 3 wt.%, ho fokotsa sekhahla sa alloy ka hoo e ka bang 3% ka 1 wt.% ea lithium ha e ntse e eketsa modulus ea elastic ka hoo e ka bang 6%. Li-alloys tsena li boetse li bonts'a khanyetso e phahameng ea mokhathala, ho tiea ha fracture, le ho hanyetsa kutu ha ho bapisoa le lisebelisoa tse tloaelehileng tsa aluminium joalo ka AA7075 kapa AA2024. Li-alloys tsa Al-Li tsa moloko oa boraro, joalo ka AA2050, AA2099, le AA2195, li ntlafalitsoe ho rarolla mathata a pejana, ho kenyelletsa anisotropy le weldability, ka ho ntlafatsa lipina tse nang le likarolo tse kang koporo (Cu), magnesium (Mg), le zirconium (Zr).

Sebopeho le Litšobotsi tsa Microstructural

Sebopeho sa li-alloys tsa Al-Li se susumetsa haholo thepa ea bona ea mochine le ea mocheso. Lithium e ntlafatsa sebopeho sa lipula tse momahaneng tsa δ′ (Al₃Li), tse kenyang letsoho ho thatafatseng pula empa hape e hlahisa ho thella ha planar, e lebisang boitšoarong ba anisotropic. Lintho tse ling tsa alloying, tse kang Cu, li khothalletsa ho thehoa ha mekhahlelo ea T₁ (Al₂CuLi) le θ′ (Al₂Cu), ha Zr e thusa ho ntlafatsa lijo-thollo ka Al₃Zr dispersoids, ho ntlafatsa ductility le ho laola sebopeho nakong ea ts'ebetso ea thermomechanical. Letlapa la 1 le akaretsa likarolo tse tloaelehileng tsa li-alloys tsa bohlokoa tsa Al-Li tse sebelisoang lits'ebetsong tsa sefofane.

**Letlapa la 1: Mefuta e Tloaelehileng ea Lik'hemik'hale tsa Aviation-Grade Al-Li Alloys (wt.%)**

Notes: Bal. = Ho leka-lekana; Fe le Si ke ditshila; Tse ling li kenyelletsa lintlha tse kang Ti, Sc, kapa Ce bakeng sa li-alloys tse itseng.

Thepa ea Mechini le Thermal

Mehaho ea mochini oa li-alloys tsa Al-Li, joalo ka matla a phahameng a khethehileng le ho satalla, li etsa hore e be tse loketseng likarolo tsa sepakapaka tse tlas'a meroalo e phahameng. Mohlala, AA2099 e bonts'a matla a tlhahiso ea hoo e ka bang 450-550 MPa le matla a ho qetela (UTS) a 500-600 MPa kamora ho halefa ha T8. Leha ho le joalo, matla a bona a phahameng a tla ka litšenyehelo tsa ho eketseha ha anisotropy ka lebaka la sebopeho sa crystallographic, haholo-holo lihlahisoa tse entsoeng. Thermally, Al-Li alloys e na le conductivity e ntle (hoo e ka bang 30-40% IACS) empa e ka ba bonolo ho nolofatsa mocheso nakong ea mekhoa ea mocheso o phahameng joaloka HSM, e hlokang taolo e nepahetseng ea maemo a mochine.

Letlapa la 2 le bapisa thepa ea mechine le ea mocheso ea li-alloys tse khethiloeng tsa Al-Li le lisebelisoa tse tloaelehileng tsa aluminium.

**Letlapa la 2: Thepa ea Mechini le Thermal ea Al-Li le Aluminium Alloys e Tloaelehileng **

Notes: Litekanyetso li hakanyetsoa 'me li itšetlehile ka phekolo e khethehileng ea mocheso le maemo a ho sebetsa.

Ho Sila ka Lebelo le Phahameng: Mechanics ea Ts'ebetso le Liphephetso

Metheo ea ho Milling ka lebelo le phahameng

Ho sila ka lebelo le phahameng ho hlalosoa ka ho itšeha ka lebelo le fetang 1000 m/min, hangata ho fihla ho 2000-5000 m/min bakeng sa li-alloys tsa aluminium, hammoho le litefiso tse phahameng tsa phepelo le botebo bo tlase ba sehiloeng. Ts'ebetso ena e phahamisa lebelo le holimo le lisebelisoa tsa lisebelisoa tse tsoetseng pele (mohlala, carbide kapa polycrystalline diamond) ho fihlela litefiso tse phahameng tsa ho tlosa thepa (MRR) le ho qeta holimo. Tlhahisong ea sepakapaka, HSM e bohlokoa bakeng sa ho lokisa meaho e nang le marako a masesaane le lijeometri tse rarahaneng, joalo ka likarolo tsa monolithic ho lialloys tsa Al-Li, tse etsang karolo ea 90% ea ho tlosoa ha thepa lits'ebetsong tse ling.

Mechine ea HSM e kenyelletsa tšebelisano e matla ea matla a ho itšeha, tšebelisano-'moho le lisebelisoa, le tlhahiso ea mocheso. Sesebelisoa sa ho itšeha se sebelisa sesebelisoa ka mokhoa oa cyclic, se hlahisa li-chips ka deformation ea shear ha se ntse se hlahisa mocheso o moholo oa khokahanyo ho sebopeho sa tool-chip. Bakeng sa li-alloys tsa Al-Li, mocheso o phahameng oa mocheso le ntlha e tlaase ea ho qhibiliha (hoo e ka bang 600-650 ° C) e matlafatsa liphello tsa mocheso, e leng se lebisang ho phahama ha mocheso sebakeng se susumetsang microstructure le khatello ea kelello e setseng.

Mathata ho HSM ea Al-Li Alloys

Mathata a mantlha ho HSM ea Al-Li alloys a kenyelletsa:

1. Liphello Tsa Mocheso: Lebelo le phahameng la ho itšeha le hlahisa mocheso ho fihlela ho 300-500 ° C ka har'a sesebelisoa-workpiece segokanyimmediamentsi sa sebolokigolo, ho kgothaletsa thermal softening, dynamic recrystallization, le phase transformation.

2. Masala a Khatello: Meroalo ea mochini le li-gradients tsa mocheso li baka maemo a thata a masala a khatello ea maikutlo, a nang le khatello e matla holim'a metsi a ka behang bophelo ba mokhathala kotsing.

3. Phetoho ea Sebopeho: Phetoho le lipotoloho tsa mocheso nakong ea HSM drive crystallographic texture textures, e amang mechanical anisotropy le formability.

4. Tool Wear le Vibration: Matla a phahameng le abrasiveness ea Al-Li alloys a potlakisa ho roala ha lisebelisoa, ha mehaho e nang le marako a masesaane e atisa ho qoqa, e ama boleng ba bokaholimo.

5. Botšepehi ba Bokahohle: Ho finyella bohloeki bo tlaase (Ra <0.8 µm) le tšenyo e fokolang ea sebaka se ka tlas'a lefatše ke ea bohlokoa empa e le phephetso ka lebaka la kutloisiso ea li-alloys ho mekhoa ea machining.

Liphephetso tsena li hloka mohlala o tsoetseng pele ho bolela esale pele le ho laola litšebelisano tsa fisiks tse ngata nakong ea HSM, ho netefatsa ts'ebetso e nepahetseng ea likarolo tse entsoeng ka mochini.

Multi-Physics Modeling Frameworks

Kakaretso ea Multi-Physics Modelling

Multi-physics modelling e kopanya libaka tse ngata tsa 'mele-mechanical, thermal, le microstructural-ho etsisa litšebelisano tse rarahaneng nakong ea HSM. Mekhoa ea bohlokoa e kenyelletsa:

• Finite Element Analysis (FEA): Mehlala ea ho seha matla, masimo a mocheso, le likhatello tse setseng ho sebelisoa mechanics e tsoelang pele.

• Mehlala ea Crystal Plasticity: Tšoara phetoho ea microstructural le liphetoho tsa sebopeho ka tekanyo ea lijo-thollo.

• Mekhoa ea Mokhahlelo: Etsisa liphetoho tsa mekhahlelo le kinetics ea recrystallization.

• Mehlala e Kopantsoeng ea Thermo-Mechanical: Kopanya litlamorao tsa mocheso le mochini ho bolela esale pele khatello ea maikutlo le phetoho ea sebopeho.

Merero ena e ipapisitse le mefuta e ikhethileng, joalo ka mohlala oa Johnson-Cook, ho hlalosa boitšoaro ba lintho tse bonahalang tlas'a maemo a phahameng a khatello le mocheso, 'me hangata li netefatsoa ka mekhoa ea liteko e kang X-ray diffraction (XRD) le electron backscatter diffraction (EBSD).

Finite Element Analysis bakeng sa HSM

FEA e sebelisoa haholo ho etsisa mokhoa oa ho itšeha, ho hapa motsoako oa thermo-mechanical ho HSM. Li-equations tse laolang li kenyelletsa:

• Momentum Balance: [ \nabla \cdot \sigma + \rho b = \rho \ddot{u} ] moo (\sigma) e leng khatello ea maikutlo, (\rho) e leng mokoloko, (b) ke matla a 'mele, le (\ddot{u}) ke ho potlakisa.

• Tekanyo ea Matla: [ \rho c_p \frac{\ partial T}{\ partial t} = \nabla \cdot (k \nabla T) + Q ] moo (c_p) e leng mocheso o khethehileng, (T) ke mocheso, (k) ke conductivity ea mocheso, le (Q) ke tlhahiso ea mocheso ho tloha mosebetsing oa polasetiki le khohlano.

Mefuta ea FEA e khetholla sesebelisoa le sesebelisoa hore e be likarolo, e rarolla khatello ea maikutlo, khatello le kabo ea mocheso. Bakeng sa li-alloys tsa Al-Li, FEA e 'nile ea sebelisoa ho bolela esale pele matla a ho itšeha, litlaleho tsa mocheso, le likhatello tse setseng tlas'a maemo a fapa-fapaneng, ho akarelletsa le ho omella, ho fokotsa palo e fokolang (MQL), le ho pholisa ha cryogenic. Letlapa la 3 le bapisa mefuta e fapaneng e thehiloeng ho FEA bakeng sa HSM ea lialloys tsa Al-Li.

**Letlapa la 3: Papiso ea Meetso e Thehiloeng ka FEA bakeng sa HSM ea Al-Li Alloys**

Mohlala oa Crystal Plasticity

Mefuta ea polasetiki ea Crystal e etsisa phetoho ea sebopeho ka ho rarolla mekhoa ea ho thella le ho kopanya sekala sa lijo-thollo. Mefuta ena e sebelisa Orientation Distribution Function (ODF) ho hlalosa sebopeho sa crystallographic le ho kenyelletsa melao ea motheo joalo ka mofuta oa Voce o thatafatsang ho ts'oara ho thatafala ha khatello le liphetoho tsa sebopeho. Equation e laolang bakeng sa deformation ea polasetiki ke:

[ \letheba{\gamma}^\alpha = \letheba{\gamma}_0 \left( \frac{|\tau^\alpha|}{\tau_c^\alpha} \right)^n \text{sgn}(\tau^\alpha) ]

moo (\ dot{\ gamma}^\ alpha) e leng sekhahla sa ho kuta tsamaisong ea ho thella (\ alpha), (\ tau^\ alpha) ke khatello ea ho kuta e rarollotsoeng, (\ tau_c^\ alpha) ke khatello e matla e rarollotsoeng, 'me (n) ke sekhahla sa kutlo.

Bakeng sa li-alloys tsa Al-Li, mefuta ea polasetiki ea kristale e bolela esale pele ho fetoha ha likaroloana tse kang Brass {110}<112> le Cube {100}<001> nakong ea HSM, e susumetsang anisotropy ea mechine. Mefuta ena e matla haholo empa e fana ka lintlha tse qaqileng mabapi le liphetoho tsa microstructural.

Mehlala ea Phase-Field le Microstructural Models

Mekhoa ea li-Phase-field e etsisa dynamic recrystallization (DRX) le liphetoho tsa mohato ka ho sala morao phetoho ea litekanyetso tsa tatellano. Phase-field equation ke:

[ \frac{\partial \phi}{\partial t} = -M \frac{\delta F}{\delta \phi} ]

moo (\phi) e leng phallo-field variable, (M) ke mobility, le (F) ke matla a mahala a sebetsang. Mehlala ena e bohlokoa haholo bakeng sa ho ithuta continuous dynamic recrystallization (CDRX) ka Al-Li alloys, e hlahang nakong ea HSM ka lebaka la maemo a phahameng a khatello le mocheso.

Thermal Texture Evolution ho HSM

Mechanisms of Texture Evolution

Thermal texture evolution ho HSM ea Al-Li alloys e tsamaisoa ke motsoako oa deformation ea polasetiki, li-gradients tsa mocheso, le recrystallization. Mekhoa ea bohlokoa e kenyelletsa:

• Ts'ebetso ea Slip System: Mefuta e phahameng ea ho kuta e kenya tšebetsong litsamaiso tse ngata tse thellang, tse lebisang ho likarolo tsa moetso joalo ka Copper {112}<111> le S {123}<634>.

• Recrystallization e Matla (DRX): Ho futhumatsa sebakeng sa heno ho khothalletsa DRX, ho fella ka lijo-thollo tse ntle, tse lekantsoeng le sebopeho sa randomization.

• Thermal Softening: Lithempereichara tse phahameng li fokotsa khatello ea kelello ea phallo, li fetola ts'ebetso ea tsamaiso ea li-slip le ntlafatso ea sebopeho.

Sebopeho se matla sa pele sa li-alloys tsa Al-Li, tse atisang ho ntlafatsoa nakong ea mocheso o chesang kapa oa ho bilika, o fetoha nakong ea HSM ka lebaka la cyclic loading le mocheso oa mocheso. Lithuto tsa EBSD li senola hore ho sila ka lebelo le phahameng ho ka fokotsa matla a sebopeho ka ho khothaletsa CDRX, haholo li-alloys tse kang AA2099.

Ho Etsa Mohlala ho Hlahisoeng ha Texture

Meetso ea crystality finite element (CPFEM) le mefuta e thehiloeng ho ODF e sebelisoa ho bolela esale pele ho iphetola ha sebopeho. Mohlala, mofuta oa mefuta e mengata oa AA2070 Al-Li alloy o etsisa liphetoho tsa sebopeho nakong ea deformation ka ho hokahanya FEA ea macro-scale le liapdeite tsa ODF tse nyane. Mefuta ena e bonts'a hore lebelo le phahameng la ho itšeha le fokotsa sebopeho sa anisotropy ka ho ntlafatsa recrystallization, athe litefiso tse tlase tsa phepelo li boloka masela a matla ka lebaka la ho kenya letsoho ho fokolang ha mocheso.

Letlapa la 4 le akaretsa lithuto tsa liteko le tsa mohlala mabapi le ho iphetola ha sebopeho ho li-al-Li alloys nakong ea HSM.

**Letlapa la 4: Lithuto mabapi le Phetoho ea Tlhaho ho Al-Li Alloys Nakong ea HSM**

Sebopeho sa Khatello ea Bokahohle

Mekhoa ea Masala a Khatello ea Maikutlo

Matšoenyeho a masala a holim'a HSM a hlaha ka lebaka la ho phahama ha meroalo ea mochini le ea mocheso:

• Meroalo ea Mechini: Ho itšeha ho baka khatello ea maikutlo ka deformation ea polasetiki, athe ho roala lisebelisoa ho eketsa khatello ea maikutlo.

• Meroalo ea Mocheso: Mocheso o fokang o baka khatello ea maikutlo ka lebaka la ho hola ha mocheso le ho tsidifala ho latelang.

• Coupled Liphello: Thermo-mechanical coupling e holisa li-gradients tsa khatello ea maikutlo, haholo-holo likarolong tse tšesaane tse nang le marako.

Li-alloys tsa Al-Li, likhatello tse saletseng holimo holimo (ho fihla ho 200-300 MPa) li kotsi bophelong ba mokhathala, ha khatello ea maikutlo (100-200 MPa) e ka tlas'a lefatše e matlafatsa nako e telele. Pholiso ea cryogenic, e sebelisang naetrojene ea metsi (LN2), e bonts'itsoe ho fokotsa khatello ea maikutlo ka ho theola mocheso.

Ho Etsa Mohlala Residual Stress

Mehlala e setseng ea khatello ea maikutlo e kopanya FEA le mekhoa e matla kapa ea lipalo ho bolela esale pele maemo a khatello ea maikutlo. Ka mohlala, Jiang et al. e sebelisitse mohlala oa palo ea FEA ho bonts'a hore matla a ho itšeha a laola khatello ea mahlaseli a mahlaseli a marang-rang ho li-al-Li alloys, ha thepa ea mocheso e na le phello e fokolang ka lebelo le tlaase. The stress tensor e baloa ka tsela e latelang:

[ \sigma_r = \sigma_m + \sigma_t ]

moo (\ sigma_r) ke khatello e setseng, (\ sigma_m) ke karolo ea mochine, 'me (\ sigma_t) ke karolo ea mocheso.

Letlapa la 5 le bapisa mekhoa e setseng ea khatello ea maikutlo bakeng sa HSM ea li-alloys tsa Al-Li.

**Letlapa la 5: Mekhoa ea ho Etsa Mehlala ea Khatello ea Khatello bakeng sa HSM ea Al-Li Alloys**

Netefatso ea Teko le Mekhoa

Mekhoa ea ho lekanya

Netefatso ea liteko ea mefuta ea fisiks e mengata e ipapisitse le mekhoa e tsoetseng pele ea sebopeho:

• X-Ray Diffraction (XRD): E lekanya likhatello tse setseng ka ho hlahloba mofuta oa lattice.

• Elektrone Backscatter Diffraction (EBSD): Mokhoa oa 'mapa oa crystallographic le boholo ba lijo-thollo.

• Thermography ea infrared: E tšoara litlaleho tsa mocheso oa holim'a metsi nakong ea HSM.

• Dynamometry: E lekanya matla a ho itšeha ka li-sensor tsa piezoelectric.

Mekhoa ena e tiisa likhakanyo tsa mohlala, joalo ka phokotso ea likhatello tse saletseng morao tlas'a pholiso ea cryogenic kapa ho thehoa ha lijo-thollo tse lekanang ka CDRX.

Case Studies

Lithuto tsa morao-rao li netefatsa mefuta ea fisiks e mengata bakeng sa HSM ea liallo tsa Al-Li:

1. Cryogenic Milling ea AA2195: Pholiso ea Cryogenic e ile ea fokotsa mocheso holim'a metsi ka 30-50% 'me ea fetola khatello ea maikutlo ho tloha ho tsitsipano ho ea ho khatello, ho ntlafatsa bophelo ba mokhathala.

2. Texture Evolution ho AA2099: Tlhahlobo ea EBSD e tiisitse hore lebelo le phahameng la ho itšeha le khothalletsa CDRX, ho fokotsa matla a sebopeho le anisotropy.

3. Residual Stress in AA7050: Litekanyo tsa XRD li bonts'itse hore ho roala ha letlapa la lisebelisoa ho eketsa khatello ea maikutlo ka 20-30% ka lebaka la meroalo e matla ea mocheso.

Maano a Ntlafatso ea HSM

Ntlafatso ea Parameter ea Ts'ebetso

Ho ntlafatsa maemo a HSM - lebelo la ho itšeha, sekhahla sa phepelo, botebo ba sehiloeng le maemo a pholiso - ho fokotsa khatello ea maikutlo le ho laola phetoho ea sebopeho. Maano a bohlokoa a kenyelletsa:

• Mabelo a Phahameng a ho Seha: Lebelo le ka holimo ho 2000 m / min le fokotsa sebopeho sa anisotropy ka ho khothalletsa DRX empa ho eketsa meroalo ea mocheso.

• Litefiso tse tlase tsa Phepelo: Litefiso tsa lijo tse ka tlase ho 0.1 mm/rev li fokotsa khatello ea mochini le ho ba mahlahahlaha holimo.

• Pholiso ea Cryogenic: Pholiso ea LN2 e fokotsa mocheso le khatello ea maikutlo, e matlafatsang botšepehi ba holim'a metsi.

• Sesebelisoa sa Geometry: Lisebelisoa tse bohale tse nang le li-angles tse tlaase li fokotsa matla a ho itšeha le ho hlahisa mocheso.

Mekhoa e tsoetseng pele ea ho Pholisa

Cryogenic cooling le MQL li sebetsa hantle ho laola liphello tsa mocheso. Cryogenic milling ka LN2 e theola mocheso ho isa ho 100-200 ° C, e fokotsa khatello ea mocheso le ho khothaletsa khatello ea maikutlo e setseng. MQL, ka ho sebelisa mafura a fokolang, e fokotsa khohlano empa ha e sebetse hantle ho feta pholileng ea cryogenic bakeng sa li-alloys tsa Al-Li.

Letlapa la 6 le akaretsa phello ea maano a ho pholisa liphellong tsa HSM.

**Letlapa la 6: Kameho ea Maano a Pholiso ho HSM ea Al-Li Alloys**

Moqapi oa Lisebelisoa le Liaparo

Lisebelisoa tsa lisebelisoa tse kang polycrystalline diamond (PCD) le liaparo tse kang TiAlN li fokotsa ho roala le ho hlahisa mocheso, ho ntlafatsa boleng ba bokaholimo. Lisebelisoa tse ntlafalitsoeng tsa li-geometri, joalo ka li-angles tse phahameng tsa helix, li fokotsa ho thothomela le ho qoqa ka likarolo tsa Al-Li tse nang le mabota a masesaane.

Litsela le Liphephetso tsa Kamoso

Mekhoa e Hlahang ea ho Etsa Mohlala

Likhatelo-pele tsa ho etsa mohlala oa li-multifisiks li kenyelletsa:

• Kopanyo ea ho Ithuta ka Mechini: Ho kopanya FEA le ho ithuta ka mochini ho bolela esale pele sebopeho le khatello ea maikutlo ka litšenyehelo tse fokotsehileng tsa computational.

• Mehlala e Mengata: Ho kopanya FEA ea macro-scale le polasetiki ea kristale e nyane bakeng sa ponelopele e felletseng ea sebopeho.

• Ketsiso ea Nako ea 'Nete: Ho theha mehlala ea nako ea sebele bakeng sa ho lekola le ho laola HSM ha e ntse e sebetsa.

Mathata a ho Etsa Mehlala le Boiteko

Mathata a mantlha a kenyelletsa:

• Litšenyehelo tsa Computational: Mehlala e tšepahalang e phahameng joalo ka CPFEM e hloka lisebelisoa tsa bohlokoa tsa komporo.

• Phapang ea Lintho: Ho fapana ha sebopeho sa alloy le sebopeho sa mantlha sa microstructure se thatafatsa ho nepahala ha mohlala.

• Netefatso ya Teko: Phihlello e fokolang ea lisebelisoa tse tsoetseng pele tsa tlhabollo joalo ka synchrotron XRD e sitisa netefatso.

Likopo tsa Liindasteri

Lintlha tse tsoang ho mofuta oa li-multifisiks li ntse li sebelisoa ho ntlafatsa HSM bakeng sa likarolo tsa sepakapaka, joalo ka fuselage ea Boeing 787 le matlalo a mapheo a Airbus A380, moo liallo tsa Al-Li li atileng. Patlisiso ea kamoso e ikemiselitse ho kopanya mefuta ena ho litsamaiso tsa tlhahiso ea khomphutha (CAM) bakeng sa taolo ea nako ea nnete.

fihlela qeto e

Multi-fisiks mohlala oa ho iphetola ha mogote le khatello ea ho sala holim'a metsi nakong ea ho sila ka lebelo le phahameng la li-al-Li alloys tsa sefofane ke sebaka sa bohlokoa sa lipatlisiso se kopanyang mahlale a thepa, mechini ea likhomphutha le boenjiniere ba tlhahiso. Ka ho kopanya FEA, polasetiki ea kristale, le mehlala ea li-phase-field, bafuputsi ba ka bolela esale pele le ho laola litšebelisano tse rarahaneng tsa liketsahalo tsa mechine, mocheso le microstructural. Netefatso ea liteko e sebelisang XRD, EBSD, le thermography e tiisa bonnete ba mefuta ena, athe maano a ntlafatso a joalo ka pholiso ea cryogenic le moralo oa lisebelisoa tse tsoetseng pele li matlafatsa bots'epehi ba bokaholimo le ts'ebetso ea likarolo. Leha ho na le liphephetso tsa litšenyehelo tsa computational le phapano ea thepa, tsoelo-pele e tsoelang pele ea ho etsa mohlala le mekhoa ea liteko e ts'episa ho ntlafatsa ho nepahala le ho sebetsa hantle ha HSM bakeng sa lialloys tsa Al-Li, ho netefatsa hore li tsoela pele ho busa lits'ebetsong tsa sefofane.

Polelo e Hatisitsoeng: Haeba ho se na litaelo tse ikhethang, lingoloa tsohle tse fumanehang sebakeng sena sa marang-rang ke tsa mantlha. Ka kopo bonts'a mohloli oa khatiso: https: //www.cncmachiningptj.com/ li -ththanks！

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