I. Hauv cov alloys, ', F', thiab 1 qib yog lub ntsiab muaj peev xwm ua rau cov kauj ruam tam sim no, tab sis cov kev hloov pauv ntawm lawv tseem tsis meej. To taub lub thermodynamic, kev siv misinetic, thiab lawv cov kev hloov kho ua haujlwm yog qhov tseem ceeb heev rau cov khoom ntawm MG - Tsis tshua muaj - Lub ntiaj teb alloys.
Ii. Kev Ua tiav Cov Lus Qhia Hauv txoj kev kawm no, cov kws tshawb nrhiav tau siv Haadf - cov ntsiab cai sau rau tus yam ntxwv "}}}}}. 5ZR}. 5ZR}. Kev kuaj sim pom tias F 'theem yog ib theem hloov theem nrab ntawm' theem thiab 1 theem. Los ntawm xam lub zog barrier siv txoj kev nce toj - cov kws tshawb nrhiav pom tias kev hloov pauv ntawm 'rau cov kev hloov pauv ntawm' rau cov kauj ruam - los ntawm - kauj ruam shear transformation. Cov kev ua tiav no tau ua rau peb muaj kev nkag siab tob tob txog kev hloov pauv ntawm theem ntawm cov pa roj magnesium.
III. Daim duab - Cov Ntawv Qhia Phau Ntawv 1 qhia cov qauv atom ntawm '-MG7GD, F'-mg7gd, thiab {} mg3gd phases. Ntawm lawv, (a Daim duab (F) Qhia cov teeb meem atomic stacking ntawm 1 theem tom qab ua haujlwm hloov pauv, thiab daim duab (g) qhia txog qhov 1 theem thaum pom raws [110] 1 taw qhia. Atoms muaj xim - coded raws li lawv hom thiab cov haujlwm nyob hauv cov basal dav hlau a (z} 17}} 18 18).
Daim duab 2 qhia txog atomic - qib Haadf - Qia cov duab ntawm GWZ1031K - T4 Almoy Laus ntawm 275 Qib rau 10 teev. (a, b) qhia tias F 'prechipitate pases yog nyob ntawm' theem nrog tib yam thiab sib txawv; (c) yog cov duab loj ntawm thaj chaw cim hauv (a). Hauv daim duab, cov kab daj dotting sawv cev rau qhov sib cuam tshuam ntawm 'thiab fog txheej txheem sib txawv qhia tias lawv yog daj ntseg nkhaus qhia tias lawv tau ua raws li hauv F' theem. Cov nqaj hluav taws xob yog sib zog mus rau [0001] -mg.
Daim duab 3 qhia cov schematic daim duab ntawm ob hom deformation hom rau 'rau F' kev hloov pauv. (a) Tsis yog - hom attre: cov atoms hauv lub thawv liab txav qhov deb ntawm A / 2 nrog rau [100] 'kev taw qhia; (b) Txoj kab sib xyaw: Kab laum liab sawv cev rau thawj lub dav hlau Lub thawv dub sawv cev rau lub xov tooj sib xws.
Daim duab 4 (a) cov qauv atomic ntawm 'theem, nrog ua tau cov khoom lag luam uas tau cim los ntawm cov kab liab. (b) cov sib raug ua kom tawg enged ntawm txheej 1 - 7 cim hauv (a).
IV. Ntsiab lus qhia txog txoj kev hloov pauv ntawm cov kev hloov pauv ntawm cov theem daus daus hauv MG - GD Alloys. Los ntawm atomic - qib Haadf - Cov qauv suav thiab thawj cov kev suav, cov txheej txheem hloov los ntawm 'rau F' thiab mus rau 1 theem yog qhia tawm. Thaum lub sij hawm laus txheej txheem ntawm GWZ1031K - T4 Alloy, nws pom tias F 'theem yog ib txwm tsim ntawm ob' variants, thiab cov kauj ruam ntawm 'thiab F' ntu yog kev sim tau pom. Ntxiv qhov sib piv ntawm lub zog nkhaus qhia tau tias kev hloov pauv ntawm 'rau F' feem ntau yuav tshwm sim hauv ib ruam - los ntawm - kauj ruam. Qhov kev tshawb pom no muaj kev pom tshiab rau kev nkag siab cov kev hloov ntawm cov theem hnyav. Ib qho ntxiv, ob qho kev sim ua thiab theoretical suav qhia tias F 'theem ua haujlwm ntawm GD atoms hauv cov txheej txheem ntawm F' mus rau 1 theem kev hloov pauv tau muaj txiaj ntsig. Cov lus xaus no tsis yog tob tob rau peb txoj kev nkag siab ntawm kev ua kom muaj txiaj ntsig - muaj kev txhawb nqa lub hauv paus tseem ceeb - muaj kev txhawb nqa lub ntiaj teb tseem ceeb
Hauv kev xaus, txoj kev kawm no tau txais kev txhawb nqa tseem ceeb rau kev ua haujlwm zoo rau MG - Tsis tshua muaj kev nthuav dav ntawm MG - Tsis tshua muaj lub hauv paus rau kev tshawb fawb txog yav tom ntej thiab siv tau.