THE CHARACTERISTICS OF MICROSTRUCTURES AND PROPERTIES FOR ADVANCED ALUMINUM/SILICON CONTAINED HOT-ROLLED TRIP STEELS

查看全文 作　　者：[3]Y.Chern;[1]G.Y.Tang;[1]W.Liu;[1]Q.Liu;[4]P.H.Li;[3]X.Chen 机构地区：[1]GraduateSchoolatShenzhenofTsinghuaUniversity,Shenzhen518055,China;[3]GraduateSchoolatShenzhenofTsinghuaUniversity,Shenzhen518055,China//WuhanIronandSteelGroupCorporation,Wuhan430080,China;[4]WuhanIronandSteelGroupCorporation,Wuhan430080,China 出　　处：《Acta Metallurgica Sinica(English Letters)》索引2004年第17卷第6期,共7页 摘　　要：The microstructure characteristics with super fine ferrite grain size less than 5mm, appropriate retained austenite fraction around 5.0% and or removable abundant dislocations have been obtained by controlled rolling and cooling, which leads to well balance com- prehensive properties with high tensile strength of 510 and 615MPa, high elongation of 40% and 27%, low ratio of yield strength to tensile strength 0.83 and 0.80, as well as low ductile- brittle transition temperature less than -80 and -70℃ for advanced aluminum hot-rolled TRIP steel and silicon hot-rolled TRIP steel, respectively. 关 键 词：超细铁素体晶粒 铝 硅 热轧制 TRIP型钢 微观结构