MORPHOLOGY OF MARTENSITE IN 7CrSiMnMoV STEEL AND ITS STRENGTH-TOUGHNESS

查看全文 作　　者：WANG Ruixiang GU Nanju YIN Fuxing Hebei Institute of Technology,Tianjin,China 出　　处：《Acta Metallurgica Sinica(English Letters)》索引1991年第4卷第6期,共5页 摘　　要：The morphology and substructure of martensites in 7CrS(?)MnMoV steel were observed underoptical or electron microscope,and martensitic transformation with its morphology was alsoanalysed.In the normally quenched steel three types of martensites are found,including thewide lath one of dislocation substructure formed preferentially along grain boundaries,thethinner inner laths and the twinning martensite plate in interior of grain.Therefore,an at-tempt was made to substitute lower bainite,formed by short-term isothermal quenching.forintergranular martensite,it is believed that the morphology would be very influential to thest(?)ength-toughness of the steel. 关 键 词：7CrSiMnMoV STEEL MARTENSITE strengthening