Lub ntsiab sib txawv ntawmaustenitic stainless hlauthiab ferritic stainless hlau nyob hauv lawv cov qauv thiab cov khoom.
Austenitic stainless hlau yog ib lub koom haum uas nyob ruaj khov ntawm qhov kub siab tshaj 727 ° C.Nws nthuav tawm cov yas zoo thiab yog cov qauv uas nyiam tshaj plaws rau feem ntau cov hlau uas ua haujlwm siab ntawm qhov kub siab.Tsis tas li ntawd, austenitic hlau tsis yog hlau nplaum.
Ferrite yog ib qho kev daws teeb meem ntawm carbon yaj hauv α-hlau, feem ntau cim ua F. Instainless hlau, "ferrite" yog hais txog cov khoom sib tov ntawm cov pa roj carbon monoxide α-hlau, tus cwj pwm los ntawm nws cov pa roj carbon solubility tsawg.Nyob rau hauv chav tsev kub, nws tsuas yog yaj mus txog 0.0008% carbon, ncav cuag lub siab tshaj plaws cov pa roj carbon solubility ntawm 0.02% ntawm 727 ° C, thaum tuav lub cev-centered cubic lattice.Nws feem ntau sawv cev los ntawm lub cim F.
Ntawm qhov tod tes, ferriticstainless hlauhais txog stainless hlau feem ntau tsim los ntawm cov qauv ferritic thaum siv.Nws muaj chromium nyob rau hauv thaj tsam ntawm 11% mus rau 30%, featuring lub cev-centered cubic crystal qauv.Cov ntsiab lus hlau ntawm stainless hlau tsis cuam tshuam txog seb nws puas raug cais raws li ferritic stainless hlau.
Vim nws cov ntsiab lus tsis tshua muaj carbon, ferritic stainless hlau nthuav tawm cov khoom zoo ib yam li cov hlau ntshiab, nrog rau cov yas zoo heev thiab tawv tawv nrog tus nqi elongation (δ) ntawm 45% mus rau 50%.Txawm li cas los xij, nws lub zog thiab hardness kuj tsawg, nrog lub zog tensile (σb) ntawm kwv yees li 250 MPa thiab Brinell hardness (HBS) ntawm 80.
Post lub sij hawm: Dec-25-2023