超级双相不锈钢中σ相力学性能的纳米压痕表征
Nanoindentation Characterization of Mechanical Properties of σ Phase in Super Duplex Stainless Steel
摘 要
为了预测金属间化合物σ相的析出对00Cr25Ni7Mo4N超级双相不锈钢力学性能的影响, 采用纳米压痕技术对加热缓冷后该钢的σ相进行了表征, 并对其显微组织进行了观察。结果表明: 钢中σ相的体积分数为36.7%, 其纳米压痕硬度范围为14.0～17.1 GPa, 平均值为15.7 GPa, 弹性模量范围为262～380 GPa, 平均值为317 GPa; 测试结果基本排除了基体效应的影响。
σ相
力学性能
纳米压痕
duplex stainless steel
σ phase
mechanical property
nanoindentation
Abstract
To predict the effect of σ phase precipitation on mechanical properties of 00Cr25Ni7Mo4N super duplex stainless steel, the intermetallics σ phase was characterized by nanoindentation after slow cooling, and the microstructure was observed. The results show that the volume fraction of σ phase in the steel was 36.7%, and the nanoindentation hardness of the σ phase was in the range of 14.0-17.1 GPa with a mean value of 15.7 GPa; the modulus of elasticity was in the range of 262-380 GPa with a mean value of 317 GPa. In addition, the substrate-effect on results could be removed.
中图分类号 TG142.1
所属栏目
基金项目
收稿日期 2010/2/12
修改稿日期 2011/5/21
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备注姚瑶(1985-), 女, 浙江湖州人, 硕士研究生。
引用该论文: YAO Yao,ZHOU Can-dong,SHI Bi,YANG Xiao-ping,SHAN Ai-dang,SONG Hong-wei. Nanoindentation Characterization of Mechanical Properties of σ Phase in Super Duplex Stainless Steel[J]. Materials for mechancial engineering, 2011, 35(7): 1～3
姚瑶,周灿栋,史弼,杨晓萍,单爱党,宋洪伟. 超级双相不锈钢中σ相力学性能的纳米压痕表征[J]. 机械工程材料, 2011, 35(7): 1～3
被引情况:
【1】陈蓉,华浩,吴安如,宋志刚, "铬含量对00Cr25Ni7Mo3N双相不锈钢力学性能及耐腐蚀性能的影响",机械工程材料 40, 26-28(2016)
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参考文献
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【2】HENRIK S, ROLF S. Sigma phase precipitation in duplex stainless steel 2205[J].Materials Science and Engineering A, 2007, 444: 271-276.
【3】陈嘉砚, 杨卓越, 杨武, 等.双相不锈钢中σ相的形成特点及其对性能的影响[J].钢铁研究学报, 2006, 18(8): 1-4.
【4】JOANNA M, MARIA S. Qualitative and quantitative analysis of σ and χ phases in 2205 duplex stainless steel[J].Materials Characterization, 2006, 56: 355-362.
【5】NILSSON J O, KANGAS P, KARLSSON T, et al. Mechanical properties, microstructural stability and kinetics of σ-phase formation in 29Cr-6Ni-2Mo-0.38N superduplex stainless steel[J].Metallurgical and Materials Transactions A, 2000, 31: 35-45.
【6】OLIVER W C, PHARR G M. An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments[J].J Mater Res, 1992, 7(6): 1564-1583.
【7】OLIVER W C, PHARR G M. Measurement of hardness and elastic modulus by instrumented indentation: advances in understanding and refinements to methodology[J].J Mater Res, 2004, 19(1): 3-20.
【8】宋洪伟, 史弼, 王秀芳, 等.一种低碳低合金钢的纳米压痕表征[J].金属学报, 2005, 41(3): 287-291.
【9】张俊宝, 杨晓萍, 王秀芳, 等.精细退火GCr15钢各相微观组织纳米压痕表征[J].宝钢技术, 2008(2): 50-53.
【10】RANDALL N X, JULIA-SCHMUTZ C, SORO J M, et al. Novel nanoindentation method for characterizing multiphase materials[J].Thin Solid Films, 1997, 308/309: 297-303.
【11】王秀芳, 杨晓萍, 郭振丹, 等.双相不锈钢中铁素体和奥氏体力学性能的纳米压痕表征[J].钢铁研究学报, 2006, 18(增刊2): 58-62.
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