塑性预变形对316L奥氏体不锈钢氢脆的影响
Effect of Plastic Pre-deformation on Hydrogen Embrittlement of 316L Austenitic Stainless Steel
摘 要
对316L奥氏体不锈钢板试样进行不同程度的塑性预变形, 通过电化学充氢及拉伸试验, 研究了塑性预变形对316L奥氏体不锈钢氢脆的影响。结果表明: 随着塑性预变形量的增大, 316L不锈钢的屈服强度和抗拉强度均有提高, 但塑性降低; 充氢后316L不锈钢的强度变化不大, 但塑性进一步降低, 充氢导致了316L不锈钢发生塑性损减, 且随着塑性预变形程度的增大, 氢致塑性损减的程度也增大, 塑性预变形导致材料的氢脆敏感性增大。
预变形
氢脆
塑性损减
316L austenitic stainless steel
pre-deformation
hydrogen embrittlement
plasticity loss
Abstract
Plastic pre-deformation with various degrees was carried out for 316L austenitic stainless steel plate. The effect of plastic pre-deformation percentage on the hydrogen embrittlement of 316L austenitic stainless steel plate was investigated by electrochemical hydrogen charging and tensile test. The results showed that with the increase of plastic pre-deformation percentage, the yield strength and tensile strength of 316L stainless steel increased, but plasticity decreased. The strength of 316L stainless steel was less affected by hydrogen charging, but the plasticity was further decreased, indicating that hydrogen embrittlement occurred. The plasticity loss increased with the plastic pre-deformation increasing, which means the hydrogen embrittlement susceptibility of 316L stainless steel is highly dependent on the amount of plastic deformation.
中图分类号 TG142.25
所属栏目 试验研究
基金项目 江苏省2011年度普通高校研究生科研创新计划项目(CXZZ11-0336)
收稿日期 2012/11/22
修改稿日期 2013/10/14
网络出版日期
作者单位点击查看
备注董伟南(1988-), 男, 江苏常州人, 硕士研究生。
引用该论文: DONG Wei-nan,WANG Yan-fei,GONG Jian-ming. Effect of Plastic Pre-deformation on Hydrogen Embrittlement of 316L Austenitic Stainless Steel[J]. Materials for mechancial engineering, 2014, 38(1): 23～27
董伟南,王艳飞,巩建鸣. 塑性预变形对316L奥氏体不锈钢氢脆的影响[J]. 机械工程材料, 2014, 38(1): 23～27
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参考文献
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【3】白彬,张鹏程,邹觉生.316L不锈钢抗氢脆性能研究［J］.机械工程材料,2002,26(5):18-21.
【4】韩豫,陈学东,刘全坤.奥氏体不锈钢应变强化工艺及性能研究［J］.机械工程学报,2012,48(2):87-92.
【5】陈挺,王步美,徐涛, 等.奥氏体不锈钢压力容器应变强化技术发展及国外标准比较［J］.机械工程材料,2012,36(3):1-4.
【6】蒋旺,巩建鸣,王艳飞, 等.电化学充氢前后304L奥氏体不锈钢的塑性对比［J］.机械工程材料,2012,36(2):28-31.
【7】李秀艳,李依依.奥氏体合金的氢损伤［M］.北京:科学出版社,2003: 55-62.
【8】褚武扬.氢损伤和滞后断裂［M］.北京:冶金工业出版社,1988: 101-103.
【9】SAN MARCHI C, SOMERDAY B P, TANG X, et al. Effects of alloy composition and strain hardening on tensile fracture of hydrogen-precharged type 316 stainless steels［J］.International Journal of Hydrogen Energy,2008,33:889-904.
【10】李峰,巩建鸣,梁斌, 等.冷加工变形对1Crl8Ni9Ti不锈钢在含溴醋酸溶液中耐腐蚀性能的影响［J］.机械工程材料,2006,30(9):13-16.
【11】HUANG Y, NAKAJIM A, NISHIKATA A, et al. Effect of mechanical deformation on permeation of hydrogen in iron［J］.The Iron and Steel Institute of Japan,2003,33:548-554.
【12】BRASS A M, CHENE J. Influence of deformation on the hydrogen behaviour in iron and nickel base alloys: A review of experimental data［J］.Materials Science and Engineering: A,1998,242:210-221.
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