Phase hloov ntawm titanium alloys
Titanium alloys muaj ob theem tseem ceeb: -Phase (densely ntim hexagonal qauv) thiab -phase (lub cev-cenched teb cov qauv). Thaum lub sij hawm theem hloov pauv, cov-tshuaj-→) thiab cov-tshuaj rau-Pethas hloov (→) yog hom kev hloov pauv theem hauv titanium alloys. Cov kev hloov no feem ntau ua raws cov kev sib raug zoo ntawm → kev hloov pauv, theem variants, theem variants nrog 6 tus txheej txheem tuaj yeem tsim tawm. Kev xaiv ntawm cov variants no muaj cov nyhuv tseem ceeb ntawm microstructure thiab macroscopic cov khoom ntawm cov khoom.
Lub ω theem hloov nyob rau hauv titanium alloys tseem yog lub ω theem kev tshawb fawb thiab nws txoj kev hloov pauv theem tau muaj feem cuam tshuam rau lub koom haum thiab cov khoom ntawm cov alloys. ω theem tsim, decompposition, lub koom haum thiab morphology, nrog rau lub kaum sab xis ntawm ωase pab nucleation yog cov ntsiab lus tseem ceeb ntawm kev kawm. Lub neej thiab kev hloov pauv ntawm ω theem muaj qhov cuam tshuam ncaj qha rau cov khoom ntawm cov alloys, thiab kev kawm ntawm ω theem hloov pauv tau pab kom nkag siab txog kev sib raug zoo ntawm lub micrtertructure thiab cov khoom ntawm titanium alloys.
Yuav ua li cas kom tswj tau tswj cov theem hloov
Kev tswj hwm theem ntawm theem hloov pauv ntawm cov khoom siv titanium yog qhov tseem ceeb kom ua kom tiav lawv cov khoom. Cov theem hloov ntawm cov khoom siv titanium feem ntau yog cov kev hloov pauv ntawm -phase cov qauv sib txawv), uas feem ntau tshwm sim ntawm kev kub ntxhov thiab tuaj yeem tswj tau los ntawm kev kho cua sov.
Kev tswj hwm cov cua sov thiab cua cua sov thiab cua txias ntawm titanium alloys ncaj qha cuam tshuam rau theem hloov pauv theem. Piv txwv li, thaum muaj qhov kub thiab txias nkag siab thiab xav tau kom muaj cua sov ntawm qhov ntsuas kub kom ntseeg tau yooj yim. Thaum cua txias, tswj qhov kev ua kom txias tuaj yeem txhawb nqa theem, piv txwv li cov cua txias ua kom muaj kev hloov pauv, thaum qeeb qeeb favors
Kev xaiv ntawm kev kho cua sov uas tsim nyog kub: Cov cua sov kho cua sov ntawm titanium alloys muaj qhov cuam tshuam tseem ceeb ntawm lawv cov yam hloov pauv theem. Piv txwv li, TC4 Titanium Alloy yuav tau txais equiaxial + lub koom haum thaum muab cov koom haum theem hloov pauv, thaum muaj Lamellar lub koom haum yuav tau thaum muaj Lamellar lub sijhawm.
Kev siv EBSD: Electron backscatat rackraction (EBSD) tuaj yeem siv cov txheej txheem muaj lead ua ke, yog li pab kom ua kom tiav theem kev hloov pauv theem hloov.
Kev tswj cov khoom sib xyaw alloy: cov ntsiab sib txawv cuam tshuam rau theem hloov chaw thiab theem hloov Kinetics. Piv txwv li, ntxiv rau ntawm -Stabilizing ntsiab (piv txwv li, txhuas) thiab -Stabilizing ntsiab (piv txwv li, vanadium) cuam tshuam rau theem hloov pauv ntawm titanium alloys.
Ua ntawv thov kev ntxhov siab: qee qhov xwm txheej, siv kev ntxhov siab los ntawm cov txheej txheem yas, raws li kev ntxhov siab tuaj yeem hloov kho lub Kinetics thiab kev hloov pauv theem.
Siv Phas hloov pauv theem: Los ntawm kev nkag siab theem kev hloov pauv cov kev sib luag, xws li kev sib npaug ntawm Moistinen thiab kev tswj hwm theem hloov pauv.
Kev tshawb fawb sim: los ntawm kev sim sim, xws li kev sim zaws thiab muaj peev xwm ua tau los saib lub hauv paus kev hloov pauv, yog li muab lub hauv paus rau kev tswj xyuas theem.
Cov sim suav hais: Cov txheej txheem sim los siv los twv seb puas siv tau los twv xyuas cov kev hloov pauv thaum lub sijhawm theem hloov pauv ntawm kev sim tsim qauv thiab txheej txheem ua kom zoo.
Siv cov txuj ci hauv-situ: hauv-situ cov txuj ci, tuaj yeem siv los soj ntsuam theem raws theem hloov pauv.
Hydrogen kho: Qhov kev sib txawv thiab kev sib txawv hauv hydrogen hauv titanium alloys tuaj yeem siv cov kev hloov kho thiab hydrogen kho tau los ua ib theem kev hloov pauv.
Los ntawm cov qauv no, cov kws tshawb nrhiav thiab cov kws tshawb nrhiav tuaj yeem tswj hwm theem hloov pauv ntawm cov khoom siv titorize ua kom tiav lawv cov khoom siv rau cov kev siv engineering tshwj xeeb.
