稀土元素对2205双相不锈钢组织与力学性能的影响
Influence of Rare Earth Element on Microstructure and Mechanical Properties of 2205 Duplex Stainless Steel
摘 要
利用光学显微镜、拉伸试验机和冲击试验机等研究了混合稀土对2205双相不锈钢组织和力学性能的影响.结果表明:加入适量混合稀土能使该钢在1 050℃固溶后的组织细化、铁素体含量减少、奥氏体含量增加;稀土含量为0.046%时,经固溶后钢的强度增大,塑、韧性显著提高,其抗拉强度、伸长率、断面收缩率和冲击功比不加稀土的分别提高了3.97%,11.67%,24.55%和9.10%.
双相不锈钢
组织
力学性能
rare earth
duplex stainless steel
microstructure
mechanical property
Abstract
The effect of mixed rare earth (RE) on microstructure and mechanical properties of 2205 duplex stainless steel was studied by optical microscopy,tensile testing machine and impact testing machine.The results show that the proper amount of mixed rare earth could refine the microstructure of the steel,decrease the content of ferrite and increase the content of austenite after the solution treatment at 1 050℃.When 2205 duplex stainless steel contained 0.046% RE,its strength,plasticity and toughness were improved obviously after solution treatment.Compared with the steel without RE element,its tensile strength,elongation,reduction of area and impact energy had been improved by 3.91%,11.67%,24.55% and 9.10% respectively.
中图分类号 TG142.71
所属栏目 新材料 新工艺
基金项目
收稿日期 2009/6/25
修改稿日期 2010/3/15
网络出版日期
作者单位点击查看
备注刘晓(1981-),男,河北沧州人,博士研究生.
引用该论文: LIU Xiao,CHEN Lei,DU Xiao-jian,WANG Long-mei. Influence of Rare Earth Element on Microstructure and Mechanical Properties of 2205 Duplex Stainless Steel[J]. Materials for mechancial engineering, 2010, 34(8): 46～49
刘晓,陈雷,杜晓建,王龙妹. 稀土元素对2205双相不锈钢组织与力学性能的影响[J]. 机械工程材料, 2010, 34(8): 46～49
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参考文献
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【13】余景生,余宗森,章复中.稀土处理钢手册[M].北京:冶金工业出版社,1992.
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