Hauv qab no yog ib lub rooj sib piv qhov sib txawv ntawm QT450 thiab GGG50, uas yog ob qho tib si qib ntawm cov hlau tsis muaj hlau tab sis muaj cov khoom sib txawv thiab cov tshuaj muaj pes tsawg leeg:
Qhov txawv tseem ceeb:
Tensile zog: GGG50 muaj zog tensile ntau dua (500 MPa) piv rau QT450 (450 MPa).
Elongation: QT450 feem ntau muaj elongation zoo dua (12%) piv rau GGG50 (10%), ua rau QT450 ntau ductile.
Microstructure: QT450 feem ntau yog ferritic, ua rau nws ntau dua ductile thiab tawv, thaum GGG50 muaj ob qho tib si ferritic thiab qee cov qauv martensitic, uas ua rau nws muaj zog dua tab sis qis dua ductility.
Daim ntawv thov: GGG50 yog qhov zoo dua rau cov khoom siv uas yuav tsum tau muaj zog dua thiab hnav tsis kam, thaum QT450 siv rau hauv cov ntawv thov kom muaj qhov sib npaug ntawm lub zog, toughness, thiab ductility.
Ob qho khoom siv yog siv hauv kev lag luam zoo sib xws tab sis rau ntau lub hom phiaj raws li lawv lub zog thiab cov yam ntxwv toughness.
