Zam tximtom qab quenching, martensite thiab khaws cia tsis ruaj khov, lawv muaj cov txheej txheem tsis sib xws yog qhov ua kom muaj kev cuam tshuam nrog lub koom haum AtomicThaum thiab kev sib cais ntawm kev tso cai no ua ke nrog koj Ua tiav qhov kub kub yog siab dua, qhov nrawm dua me ntsis kev quav ntsej muag; Raws li cov xwm txheej ntawm microstructure kev hloov pauv, ntsuas kub feem ntau muab faib ua plaub ntu, kev sib tw ntawm carbide tsub kev loj hlob thiab ferrite recrystallization.
Thawj theem (200)
(1) kev zamTempering Martensite decompose nyob rau hauv 80 xyoo ntsuas kev zam txim rau hauv cov pa roj martensite, txo cov pa roj ntsha Atoms, yog li nws tseem yog cov pa roj carbon nyob rau hauv - Fe supersaturated dolutthe nag lossis daus ntawm cov martensite zoo nkauj heev. Cov qauv sib xyaw ntawm cov khoom muaj peev xwm qis martensite thiab carbide zoo heev yog hu ua tempered martensite.

(2)kev zamTempering hauv theem ob (200-300), cov kev hloov pauv ntawm cov roj ntsha ua kom muaj kev lom zem, thiab tom qab ntawd decomposition rau alpbide lub koom haum, uas yog tsim ntawm bainite steel hardness tsis yog obviously txo nyob rau theem no
(3)Qeb peb (250-400) kev hloov pauv carbide ntawm forging npau taws yog nyob rau hauv qhov ntsuas kub no. Vim tias qhov kub thiab txias, carbon at atctionative kev hloov pauv ntawm cov pa roj av, Marticsing distorty, Martensitic kev hloov pauv rau ferrite, tau txais Ferritic matrix faib tsis pub dhau lub koom haum me me lossis kev ua siab tawv ua rau muaj kev ntxhov siab, Hardness, lub zog tawv muaj zog tau txhim kho

(4)Plaub theem ntawm forging tempering (& gt; 400) muaj peev xwm ntau dua li 500-600, alpbon thiab cov roj ntsha ua rau maj mam ua rau muaj kev kub ntxhov ntau, Sheet, thiab daim ntawv polygon lis faib rau ntawm lub koom haum ua cov khoom siv tshuab hluav taws xob zoo nkauj ntawm cov theem thiab cov tawv taub hau zoo nkauj tshem tawm kev ntxhov siab sab hauv.

(Txij 168 Forging Net)