摘要
以低碳Si-Mn钢为原料,通过控制轧制和控制冷却工艺,获得了铁素体和贝氏体的双相组织钢。检测结果表明:两种试验钢板均具有低的屈强比(ReL/Rm<0.67)、高的伸长率(A>28%)、高的加工硬化能力(n>0.28)、高的塑性应变比(r>0.98)、低的韧脆转变温度(低于-70℃)以及翻边性能良好(λ>95%)等特点。
Two low carbon Si-Mn steels with a duplex microstructure of ferrite and bainite were trial-manufactured by controlled rolling and controlled cooling process.The experimental steels both had low yield ratio（R eL/Rm 0.67）,high percentage elongation（A28%）,high work hardening ability（n0.28）and plastic strain ratio（r0.98）,low ductile-brittle transition temperature（DBTT-70℃）and good flangeability（λ95%）.
出处
《山东冶金》
CAS
2010年第3期56-57,60,共3页
Shandong Metallurgy
关键词
低碳钢
铁素体/贝氏体双相组织
汽车底盘用钢
扩孔试验
low carbon steel
ferrite/bainite dual-phase structure
automobile chassis steel
hole-expanding test
