Effect of Tempering Temperature on Microstructure and Mechanical Properties in New-Type Ultrahigh Strength Steel

摘要：

The effect of tempering temperature on the microstructure and mechanical properties of new-type ultrahigh strength steel was explored. The maximum ultimate tensile strength 2230 MPa was reached after tempering at 470℃ due to the precipitation of coherent zones of fine carbides. Upon tempering at 400℃～470℃, the martensite decomposed to form a high of density of cementite particles at platelets and twin boundaries concomitant with a significant drop in impact toughness and fracture toughness.

关键词： new-type ultrahigh strength steel tempering temperature microstructure mechanical property

作者: ZHONG Ping

作者单位: School of Materials Science and Engineering, Beihang University, Beijing 100083, China;Structural Steel and Metal Heat Treatment Technology Laboratory, Institute of Aeronautical Materials, Beijing, 100095, China

会议类型: 国际会议

会议名称: 中瑞(典)双边结构材料科技研讨会

会议地点: 北京

会议语种:英文

页码: 288-291

在线出版日期: 2007-09-18（万方平台首次上网日期，不代表论文的发表时间）