Study on Quenching and Tempering Process of Q960 High Strength Steel for Construction Machinery

摘要：

To develop the Q960 high-strength quenched and tempered steel plates for construction machinery, the effects of quenching and tempering treating regime on the microstructures and mechanical properties were investigated. The results show that the perfect austenization and fine grain size can be achieved by the optimum quenching process that is quenching temperature 900℃ and holding time 20min. Considering performance and production efficiency, the optimum tempering process parameters are found that tempering temperature 600℃ and holding time 40min. The excellent overall properties of specimens with tempered sorbite microstructure can be ultimately obtained. The yield strength is 1030MPa, tensile strength 1080MPa, percentage elongation 16.8％ and the Charpy impact energy 144J at -40℃. All these indexes come up to the National Standard GB/T 16270-2009.

关键词： high strength steel quenching and tempering treatment microstructure mechanical properties

作者: WANG Zhao-dong KANG Jian LU Feng DENG Xiang-tao WANG Chao WANG Guo-dong

作者单位: State Key Lab of Rolling and Automation,Northeastern University, Shenyang 110004, Liaoning, China State Key Lab of Rolling and Automation,Northeastern University, Shenyang 110004, Liaoning,China; Wi

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: 711-714

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）