Study of the microstructure and properties of ER70S-6 wire rods

摘要：

rolling even after drawing, a fraction of martensite may occur in the microstructure of ER70S-6 wire deteriorating the ductility and drawing performance. The mid-products of drawing for test were heat treated at 350 ℃ and 500 ℃, deformed ferrite plus pearlite plus some unchanged martensite and deformed ferrite plus pearlite plus troostite were obtained respectively. Repeat bending test was carried out on both as-drawn and heat-treated samples.The results showed that the brittleness of the as-drawn rods is not due to defects but due to the presence of martensite in microstructure. The sample heat-treated at 500℃ and cooled in oven has the best ductility.

关键词： ER70S-6 microstructure heat treatment ductility

作者: HUANG Zhi-jun WANG Yu-tao XIONG Yan

作者单位: Products Research Institute, R & D Center of Wuhan Iron and Steel (Group) Corporation, Wuhan 430080, China

会议类型: 国际会议

会议名称: The 6th International Conference on High Strength Low Alloy Steels(第六届高强度低合金钢国际会议HSLA Steels2011)

会议地点: 北京

会议语种:英文

页码: 477-480

在线出版日期: 2011-05-31（万方平台首次上网日期，不代表论文的发表时间）