2014•Advanced materials researchRequires access

Influence of Subcritical Quenching on Microstructure and Properties of Steel 22SiMnCrNi2Mo

Chun Yang, Qun Liu, Mei Gui Ou, Jia Ze Xiong, Long Qian

Abstract

Effect of subcritical quenching temperature on microstructure and mechanical properties of 22SiMnCrNi2Mo steel was studied. Conventional quenching was performed for tested steel to compare with subcritical quenching. The results show that morphology and number of ferrite change with the increase of subcritical quenching temperature. The shape of ferrite evolved from block to thin strip, and the number decreased. Ferrite and martensite formed strips spaced parallelly at subcritical quenching temperature 800°C.Steel presented good strength and ductility, while hardness is lower than conventional quenching.

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Key concepts: Materials science, Quenching (fluorescence), Microstructure, Ferrite (magnet), Martensite, Metallurgy, Ductility (Earth science), Composite material