高级检索

长期服役对316L不锈钢HAZ组织及性能的影响

邸新杰, 王玉玮, 郑礼刚, 张再国, 蔡林, 钟振堂

邸新杰, 王玉玮, 郑礼刚, 张再国, 蔡林, 钟振堂. 长期服役对316L不锈钢HAZ组织及性能的影响[J]. 焊接学报, 2016, 37(11): 75-78.
引用本文: 邸新杰, 王玉玮, 郑礼刚, 张再国, 蔡林, 钟振堂. 长期服役对316L不锈钢HAZ组织及性能的影响[J]. 焊接学报, 2016, 37(11): 75-78.
shu
DI Xinjie, WANG Yuwei, ZHENG Ligang, ZHANG Zaiguo, CAI Lin, ZHONG Zhentang. Effect of long-time service on microstructure and properties of weld HAZ of 316L stainless steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(11): 75-78.
Citation: DI Xinjie, WANG Yuwei, ZHENG Ligang, ZHANG Zaiguo, CAI Lin, ZHONG Zhentang. Effect of long-time service on microstructure and properties of weld HAZ of 316L stainless steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(11): 75-78.
shu

长期服役对316L不锈钢HAZ组织及性能的影响

  • 1.

    天津大学 材料科学与工程学院, 天津 300072

  • 2.

    中冶天工(天津)装备制造有限公司, 天津 300480

Effect of long-time service on microstructure and properties of weld HAZ of 316L stainless steel

  • 1.

    School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China

  • 2.

    MCC Tiangong Group Corporation Limited, Tianjin 300480, China

摘要

    摘要
  • 摘要: 采用金相分析的方法，对服役15年后发生应力腐蚀失效的箱式储罐用316L不锈钢焊接接头热影响区（heat-affected zone，HAZ）组织进行观察分析.探讨了HAZ富Cr相的析出行为及其对耐蚀性的影响，并对服役前后的焊接接头HAZ进行了应力腐蚀敏感性对比试验.结果表明，经长期服役的316L不锈钢HAZ内析出相主要是富Cr碳化物和σ相，平均腐蚀54 h后HAZ出现应力腐蚀裂纹；未经服役的焊接接头试样腐蚀200 h后未发生应力腐蚀开裂；表明HAZ内富Cr碳化物及σ相在焊接过程中形核，服役期间在残余应力等因素的促进下持续长大，焊接接头应力腐蚀敏感性显著增加.
    Abstract: Metallographic analysis was used to investigate the microstructure of heat-affected zone (HAZ) of 316L stainless steel weld in which stress corrosion failure occurred after 15-year service. The precipitation behavior of Cr-rich phase in HAZ and its effect on the corrosion resistance of welded joints were discussed. Comparison test of stress corrosion susceptibility was conducted on welded joints before and after service respectively. The results showed that in HAZ the main precipitates inside HAZ were Cr-rich carbides and σ phase after long-time service. On average, SCC occurred in HAZ after 54 hours etching of the sample after long-time service, but for the raw sample, SCC would not occur even after 200 hours etching. It is suggested that Cr-rich carbides and σ phase nucleated inside HAZ during welding and then is coarsened continuously during the operation service due to the effect of residual stress, leading to prominently increasing stress corrosion susceptibility of welded joints.
    • HTML全文
    • 参考文献(10)
  • [1] 范强强. 316L奥氏体不锈钢的腐蚀行为[J]. 全面腐蚀控制, 2013(11):39-43. Fan Qiangqiang. Corrosion behaviors of 316L austenitic stainless steel[J]. Total Corrosion Control, 2013(11):39-43.
    [2] Lai J K L. A study of precipitation in AISI type 316 stainless steel[J]. Materials Science and Engineering, 1983, 58(2):195-209.
    [3] Sahlaoui H, Sidhom H. Experimental investigation and analytical prediction of σ-phase precipitation in AISI 316L austenitic stainless steel[J]. Metallurgical and Materials Transactions A, 2013, 44(7):3077-3083.
    [4] 刘宝胜, 李国栋, 卫英慧. 奥氏体不锈钢中σ相析出及其对性能影响的研究进展[J]. 钢铁研究学报, 2014, 26(1):1-6. Liu Baosheng, Li Guodong, Wei Yinghui. Review of σ phase precipitation and its influence on performance in austenitic stainless steel[J]. Journal of Iron and Steel Research, 2014, 26(1):1-6.
    [5] 张俊旺, 王文先, 黄延平. 奥氏体不锈钢焊缝金属的电化学腐蚀性能[J]. 焊接学报, 2007, 28(2):103-107. Zhang Junwang, Wang Wenxian, Huang yanping. Electrochemical corrosion properties for weld metal of austenitic stainless steel[J].Transactions of the China welding institution, 2007, 28(2):103-107.
    [6] Tiedra P D, Martín Ó. Effect of welding on the stress corrosion cracking behaviour of prior cold worked AISI 316L stainless steel studied by using the slow strain rate test[J]. Materials & Design, 2013, 49:103-109.
    [7] Weiss B, Stickler R. Phase instabilities during high temperature exposure of 316 austenitic stainless steel. Metallurgical Transactions[J]. 1972, 3(4):851-866.
    [8] Padilha A F, Escribaa D M, Materna M E, et al. Precipitation in AISI 316L(N) during creep tests at 550 and 600℃ up to 10 years[J]. Journal of Nuclear Materials, 2007. 362(1):132-138.
    [9] Schwind M, Källqvist J, Nilsson J O, et al. σ-phase precipttation in stabilized austenitic stainless steels[J]. Acta Materialia, 2000, 48(10):2473-2481.
    [10] Abou E A, Abdel K R. Correlation between the degree of sensitization and stress corrosion cracking susceptibility of type 304H stainless steel[J]. Corrosion Science, 2009, 51(2):203-208.
    • 相关文章
    • 施引文献
    • 资源附件(0)
计量
  • 文章访问数:  690
  • HTML全文浏览量:  5
  • PDF下载量:  426
  • 被引次数: 0
出版历程
  • 收稿日期:  2015-05-14

目录

摘要
HTML全文
    参考文献(10)
    相关文章
    施引文献
    资源附件(0)

    /

    返回文章
    返回

    网站版权 © 焊接杂志社焊接学报编辑部电话：0451-86323218地址：哈尔滨市松北区创新路2077号

    本系统由 北京仁和汇智信息技术有限公司 开发  百度统计