工程机械用Q960钢的调质热处理工艺
Quenching and Tempering Technology of Q960 Steel Used for Engineering Machinery
摘 要
为开发960 MPa级工程机械用Q960钢板, 研究确定了其调质热处理工艺。结果表明: 其最佳的淬火工艺为900 ℃保温20 min, 最佳的回火工艺为600 ℃保温40 min; 经最佳调质热处理后试验钢的组织为回火索氏体, 屈服强度为1 030 MPa, 抗拉强度为1 080 MPa, 伸长率为16.8%, -40 ℃冲击功达144 J, 满足GB/T 16270-2009的要求。
调质热处理
显微组织
力学性能
high strength steel
quenching and tempering heat treatment technology
microstructure
mechanical property
Abstract
To develop Q960 steel plates used for engineering machinery, heat treatment technologyies of quenching and tempering was studies. The results show that the optimum quenching technology was heating at 900 ℃ for 20 min, and the optimum tempering technology was heating at 600 ℃ for 40 min. The microstructure of tested steel was temper sorbit after optimum quenching and tempering heat treatment, and yield strength, tensile strength, elongation and impact energy at -40 ℃ respectively was 1 030 MPa, 16.8% and 144 J, they could meet the acquirement of GB/T 16270-2009.
中图分类号 TH117.3
所属栏目 试验研究
基金项目 中央高校基本科研业务费资助项目(N090607001); 国家科技支撑计划项目(2006BAE03A08)
收稿日期 2010/1/22
修改稿日期 2011/2/1
网络出版日期
作者单位点击查看
备注康健(1982-), 男, 辽宁沈阳人, 博士研究生。
引用该论文: KANG Jian,LU Feng,WANG Chao,WANG Zhao-dong,WANG Guo-dong. Quenching and Tempering Technology of Q960 Steel Used for Engineering Machinery[J]. Materials for mechancial engineering, 2012, 36(1): 7～10
康健,卢峰,王超,王昭东,王国栋. 工程机械用Q960钢的调质热处理工艺[J]. 机械工程材料, 2012, 36(1): 7～10
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参考文献
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【2】钱亚军, 余伟, 武会宾, 等. 热处理对1000 MPa级工程机械结构用钢组织和性能的影响[J].北京科技大学学报, 2010, 32(5): 599-604.
【3】MUROTA Y, ABE T, HASHIMOTO M. High performance steel plates for construction and industrial machinery use[J].JFE Technical Report, 2005(5): 60-65.
【4】蓝慧芳, 杜林秀, 刘彦春, 等.控轧控冷工艺对高强度结构钢组织及力学性能的影响 [J].东北大学学报: 自然科学版, 2009, 30(2): 200-204.
【5】MAROPOULOS S, RIDLEY N, KARAGIANNIS S. Structural variations in heat treated low alloy steel forgings[J].Materials Science and Engineering A, 2004, 380(1/2): 79-92.
【6】StASKO R, ADRIAN H, ADRIAN A. Effect of nitrogen and vanadium on austenite grain growth kinetics of a low alloy steel[J].Materials Characterization, 2006, 56(4/5): 340-347.
【7】MORITO S, SAITOTO H, OGAWA T, et al. Effect of austenite grain size on the morphology and crystallography of lath martensite in low carbon steels[J].ISIJ International, 2005, 45(1): 91-94.
【8】SPEICH G R, LESLIE W C. Tempering of steel[J].Metallurgical transactions, 1972, 3: 1043-1054.
【9】WEI Ya-Na, LIN Zhua, WEI S, et al. Change of tensile behavior of a high-strength low-alloy steel with tempering temperature[J].Materials Science and Engineering A, 2009, 517(1/2): 1-6.
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