Taw Qhia Rau Cov Txheej Txheem Txhuas Txhuas
Mar 17, 2026
Alloys feem ntau muaj ntau yam kev npaj atomic. Cov qauv sib txawv no hu ua alloy theem. Cov theem sib txawv ntawm cov alloy muaj qhov sib txawv ntawm cov khoom ntawm cov alloy. Cov theem uas muaj txiaj ntsig zoo rau kev ua tau zoo ntawm cov hlau yog hu ua cov theem ntxiv zog, thaum cov theem uas tsis muaj txiaj ntsig zoo rau kev ua haujlwm ntawm cov hlau yog hu ua cov theem tsis zoo. Cov lus hauv qab no qhia txog cov theem sib xws hauv siab -kub alloys thiab lawv cov teebmeem:
|
Alloy Phase |
Hom |
Tshuaj Formula |
nyhuv |
|
Theem |
Matrix Phase |
Ni |
Kev daws teeb meem |
|
' Phase |
Txhim kho theem |
Ni3Al |
Txhim kho lub zog |
|
"Phase |
Txhim kho theem |
NiXNb |
Txhim kho lub zog |
|
Ib Phase |
Ua kom muaj zog & |
Ni3Ti |
Grain Refinement |
|
Theem |
Phem Phem |
NiAl |
Kev tsim ntawm Cracks |
|
Theem |
Phem Phem |
Ni2AlTi |
Txo Tensile zog |
|
δ Phase |
Ua kom muaj zog & |
Ni3Nb |
Grain Refinement |
|
ε Phase & |
Ua kom muaj zog & |
(NiFeCo)3(NbTi) |
Txhim kho Notch Repture Lub Neej |
|
σ Phase |
Phem Phem |
FeCr, (Cr, Mo)(Ni, Co) |
Kev tsim ntawm Cracks |
|
Laves Phase |
Phem Phem |
AB2 |
Kev tsim ntawm Cracks |
|
μ Phase |
Phem Phem |
A7B6 |
Kev tsim ntawm Cracks |
Lub alloy theem feem ntau yog tsim thaum lub sij hawm txias txheej txheem ntawm cov alloy. Thaum lub sij hawm melting txheej txheem, lub alloy yog pib nyob rau hauv ib tug kua lub xeev. Lub sij hawm no, cov atoms nyob rau hauv lub alloy yog teem random. Thaum cov kua alloy txias txias, cov alloy maj mam hloov mus rau hauv ib qho khoom. Thaum lub sijhawm txheej txheem no, cov atoms hauv cov hlau pib sib sau ua ke thiab tsim qee yam kev cai. Cov txheej txheem no hu ua crystallization. Nyob rau hauv cov txheej txheem crystallization ntawm superalloys, muaju nrog cov qauv sib txawv feem ntau tsim ib txhij. Cov qauv sib txawv no hu ua cov theem sib txawv. Cov txheej txheem ntawm kev tsim cov theem no yog hu ua kua theem transformation.
Tsis tas li ntawd, cov alloys tseem yuav tsim cov theem tshiab thaum lub sijhawm kho cua sov. Thaum lub sij hawm kho cua sov txheej txheem, lub alloy yog rhuab mus rau ib tug ntau dua kub thiab txias ntawm ib tug tej yam nqi. Thaum lub sij hawm txias txheej txheem, cov qauv ntawm cov hlau yuav undergo reorganization. Cov txheej txheem no hu ua recrystallization. Thaum lub sij hawm recrystallization, qee zaum cov theem tshiab raug tsim. Qhov phenomenon no hu ua solid phase transformation. Hom thiab kom muaj nuj nqis ntawm theem thaum kawg precipitated thaum lub sij hawm recrystallization txheej txheem yog ze ze rau cov cua sov kho qhov kub thiab txias tus nqi.
