作者单位:Shu Yiyi,Li Bin,Zhou Yuanhua,Li Bichun(Iron and Steel Research Institute of Chongqing Iron and Steel Co.td.,chongqing,400084)舒遗一,李斌,周远华,李碧春(重钢股份公司钢研所,重庆,400084)Wen Liangying,Yang Zhongping(Chongqing university,chongqing,400044)温良英,杨中平(重庆大学,重庆,邮编400044)