1. School of Materials Science and Engineering, Southwest Petroleum University, Chengdu 610500, China
2. Panzhihua Iron and Steel Research Institute Co., Pangang Group, Chengdu 611930, China
3. Sichuan Atlantic Welding Material Co., Ltd., Zigong 643010, China
4. School of Petroleum and Nature Gas Engineering, Southwest Petroleum University, Chengdu 610500, China