Tshiab high-strength tuag-cam khwb cia txhuas alloy: cov khoom tseem ceeb rau automotive lightweighting thiab kev ua tau zoo

Cov kev tshawb fawb tsis ntev los no qhia txog cov khoom zoo ntawm Al-Si-Mg-Mn alloy

Hauv kev txhim kho txuas ntxiv ntawm kev lag luam tsheb, lub teeb yuag tau dhau los ua ib txoj hauv kev tseem ceeb los txhim kho kev siv hluav taws xob thiab kev ua haujlwm. Raws li lub teeb yuag, cov khoom siv muaj zog, aluminium alloy yog nce siv hauv kev tsim tsheb. Tsis ntev los no, kev tshawb fawb txog lub zog tshiab Al-Si-Mg-Mn alloy muab qhov kev xav tshiab ntawm kev siv cov txhuas alloys hauv tsheb sib zog.

Kev tawg ntawm cov khoom tshiab ntawm Al-Si-Mg-Mn alloy

Raws li kev tshawb fawb tshiab, lub zog tensile ntawm Al-Si-Mg-Mn alloy tshiab tom qab tuag casting (raws li cam khwb cia) tuaj yeem ncav cuag 230 txog 310 MPa, lub zog tawm los yog 200 txog 240 MPa, thiab elongation yog li 0.5%. . Kev ua tiav ntawm qhov kev ua tau zoo no tau txais txiaj ntsig los ntawm kev tsim cov npluaib -AlFeMnSi theem thiab multi-scale eutectic qauv nyob rau hauv lub alloy. Txawm li cas los xij, qhov elongation ntawm cov hlau yog qis dua, feem ntau yog vim qhov ncaj qha cuam tshuam ntawm cov pores loj dua thiab ntxhib theem ob.

Kev siv thev naus laus zis thev naus laus zis thiab kev txhim kho ntawm aluminium alloys

Raws li qhov ze-net txoj kev tsim, tuag-casting yog dav siv nyob rau hauv kev tsim tsheb, kev sib txuas lus, engineering machinery thiab lwm yam vim nws cov high efficiency efficiency, siab precision thiab zoo heev kev ua tau zoo. Hauv kaum xyoo dhau los, ntau qhov chaw pib ua los ntawm cov hlau tau hloov pauv los ntawm aluminium alloy tuag-casting qhov chaw, uas tsis tsuas yog txo qhov hnyav ntawm lub tsheb, tab sis kuj ua tiav kev txuag hluav taws xob thiab txo qis cov hom phiaj.

Txhim kho mechanism thiab txhim kho kev ua haujlwm ntawm aluminium alloys

Ntxiv cov ntsiab lus xws li Mg, Cu, Mn lossis Zn rau aluminium alloys los tsim cov sib xyaw nruab nrab xws li AlMgZn, AlMn lossis Al2Cu tuaj yeem txhim kho lub zog ntawm cov hlau. Lub zog ntawm cov alloys no yog ntaus nqi los ntawm kev daws teeb meem thiab nag lossis daus. Kev tshawb fawb qhia tau hais tias los ntawm kev ntxiv qhov tsim nyog ntawm Mn, tsis tsuas yog tuaj yeem txo cov pwm nplaum, tab sis cov morphology ntawm lubb-Fe theem kuj tuaj yeem hloov pauv, ntxiv kev txhim kho kev ua haujlwm ntawm cov hlau.

Kev tshawb fawb txog cov qauv thiab cov khoom ntawm cov tshiab aluminium alloys

Cov kws tshawb fawb tau tsim Al-Si-Mg-Mn alloy compositions nrog sib txawv eutectic ib feem feem ntawm JMatPro theem daim duab simulation xam. Los ntawm kev soj ntsuam microstructure thiab puas morphology tsom xam, cov txheej txheem evolution thiab kev ua tau zoo ntawm cov hlau raug nthuav tawm. Kev tshawb fawb tau pom tias cov txheej txheem ultrafine eutectic tuaj yeem txhim kho lub zog thiab plasticity ntawm alloys, muab txoj hauv kev tshiab los txhim kho kev ua haujlwm ntawm aluminium alloys.

Kev tshawb fawb txog cov qauv thiab cov khoom ntawm cov tshiab aluminium alloys

Cov kws tshawb fawb tau tsim Al-Si-Mg-Mn alloy compositions nrog sib txawv eutectic ib feem feem ntawm JMatPro theem daim duab simulation xam. Los ntawm kev soj ntsuam microstructure thiab puas morphology tsom xam, cov txheej txheem evolution thiab kev ua tau zoo ntawm cov hlau raug nthuav tawm. Kev tshawb fawb tau pom tias cov txheej txheem ultrafine eutectic tuaj yeem txhim kho lub zog thiab plasticity ntawm alloys, muab txoj hauv kev tshiab los txhim kho kev ua haujlwm ntawm aluminium alloys.