_ yog siv los kwv yees cov tshuaj tiv thaiv quenching hauv cov hlau. Nqe lus piav qhia: Ib qho isothermal transformation (IT)yog ib qho cuab yeej siv los ntawm cov kws kho cua sov los xam cov tshuaj tiv thaiv quenching hauv steels. Daim duab IT tuaj yeem hu ua lub sijhawm-kub-hloov daim duab.
TTT daim duab siv rau dab tsi?
Txawm hais tias feem ntau yog siv los sawv cev transformation kinetics rau steels, lawv kuj tuaj yeem siv los piav txog kinetics ntawm crystallization hauv ceramic lossis lwm yam ntaub ntawv. Lub sij hawm-temperature-precipitation diagrams thiab time-temperature-embrittlement diagrams kuj tau siv los sawv cev kev hloov pauv hauv cov hlau.
CCT thiab TTT daim duab sawv cev rau dab tsi?
CCT. TTT. CCT sawv cev rau Kev hloov pauv tsis tu ncua uas yog qhov ua kom txias tsis tu ncua. TTT stands rau lub sij hawm-temperature transformation uas yog lub sij hawm-temperature transformation nkhaus. CCT nkhaus yog qhov muaj txiaj ntsig kom tau txais cov khoom sib txawv metastable los ntawm kev tswj tus nqi ntawm qhov txias.
CCT daim duab yog dab tsi?
Ib daim duab qhia txog kev hloov pauv txias tas mus li (CCT) feem ntau siv thaum kho cov hlau. Cov duab kos no yog siv rau sawv cev rau hom kev hloov pauv theem twg yuav tshwm sim hauv cov khoomvim nws txias ntawm tus nqi sib txawv.
TTT nkhaus hauv steel thiab daim ntawv thov yog dab tsi?
TTT daim duab yog tiag tiag daim duab yooj yim ntawm tuskinetics ntawm pearlite thiab bainite tsim, thiab diffusion-tsawg transformation ntawm martensite. Nws yog ib daim duab ntawm overlapping curves (Daim duab 6). Cov duab thiab txoj hauj lwm ntawm cov nkhaus nyob ntawm seb cov alloy muaj pes tsawg leeg, grain loj, thiab cov ntsiab lus carbon.
