摘要
采用累积叠轧焊方法制备了超细晶IF钢 ,对其微观组织和力学性能进行了分析。实验结果表明 ,累积叠轧后IF钢的平均晶粒尺寸为 70 0nm ;抗拉强度为 62 1 3MPa ,达到冷轧IF钢抗拉强度的 2 0 2倍 ,屈强比σ0 2 /σb 为 0 81。
Ultra fine grained interstitial free(IF)steel is prepared by accumulative roll bonding (ARB)process with its microstructure and mechanical properties investigated.Experimental results show that ultimate strength of the ultra fine grained IF steel with the mean grain size of 700 nm is increased to 621 3 MPa and the fracture behavior shows a brittleness character which results from the inclusion formed during ARB process.
出处
《上海有色金属》
CAS
2002年第3期107-110,共4页
Shanghai Nonferrous Metals
关键词
累积叠轧焊
超细晶IF钢
微观组织
力学性能
脆化
accumulative roll bonding(ARB)
ultra fine grained IF steel
mechanical properties
brittleness