1. College of Materials Science and Engineering; Chongqing University; Chongqing 400044 China
2. School of Metallurgy and Materials Engineering; Jiangsu University of Science and Technology; Zhangjiagang 212003 China
3. Design Institute of Chongqing Iron & Steel group; Chongqing 400080 China
4. Chongqing Iron & Steel group; Chongqing 401258; China