龚利华,张欢,程东亮

• 1:江苏科技大学材料科学与工程学院

摘要(Abstract)：

采用循环极化曲线测试、慢应变速率拉伸试验,结合扫描电镜观察研究了在钨极氩弧焊的保护气体中加入2%氮气对2205双相不锈钢焊接接头的相比例、点蚀和应力腐蚀开裂敏感性的影响。结果表明,虽然焊接导致材料中γ相含量降低,点蚀和应力腐蚀的敏感性增大,但与100%氩气的保护气体相比,加入2%氮气后促进了γ相转变,使焊接接头两相比例接近于母材,并使焊接对点蚀和应力腐蚀的不利影响受到有效抑制。

关键词(KeyWords)： 氮;双相不锈钢;焊接接头;点蚀;应力腐蚀开裂

Abstract:

Keywords:

基金项目(Foundation): 先进焊接技术江苏省重点试验室开放基金(JSAWT-07-08)

作者(Author): 龚利华,张欢,程东亮

DOI: 10.13289/j.issn.1009-6264.2013.09.024

参考文献(References)：

• [1]Badji R,Bacroix B,Bouabdallah M.Texture,microstructure and anisotropic properties in annealed 2205 duplex stainless steel welds[J].Materials Characterization,2011,62:833-843.
• [2]龚利华,张波,王赛虎.超级双相不锈钢焊接接头的耐蚀性能[J].焊接学报,2010,31(7):59-62.GONG Li-hua,ZHANG Bo,WANG Sai-hu.Corrosion resistance of superduplex stainless steel welded joint[J].Transactions of The China Welding Institution,2010,31(7):59-62.
• [3]龚利华,程东亮,张波.电化学法分析超级双相不锈钢焊接接头的耐点蚀性[J].腐蚀科学与防护技术,2010,22(6):521-525.GONG Li-hua,CHENG Dong-liang,ZHANG Bo.Pitting corrosion resistance of welded joints of a super-duplex stainless steel by electrochemical characteristics analysis[J].Corrosion Science and Protection Technology,2010,22(6):521-525.
• [4]Standard test method for determining volume fraction by systematic manual point count.ASTM E562[S].
• [5]Moura V S,Lima L D,Pardal J M,et al.Influence of microstructure on the corrosion resistance of the duplex stainless steel UNS S31803[J].Materials Characterization,2008,59:1127-1132.
• [6]宋志刚,陈斌,郑文杰,等.固溶温度对00Cr22Ni5Mo3N钢组织及耐点蚀性能的影响[J].钢铁研究学报,2007,19(6):69-71.SONG Zhi-gang,CHEN Bin,ZHENG Wen-jie,et al.Effect of solution temperature on microstructure and pitting corrosion-resistant property of 00Cr22Ni5Mo3[J].Journal of Iron and Steel Research,2007,19(6):69-71.
• [7]Deng Bo,Wang Zhiyu,Jiang Yiming,et al.Effect of thermal cycles on the corrosion and mechanical properties of UNS S31803 duplex stainless steel[J].Corrosion Science,2009,51:2969-2975.
• [8]刘雄,何燕霖,丁秀平,等.高温时效对2205双相不锈钢中σ相析出行为的影响[J].材料热处理学报,2010,31(3):48-51.LIU Xiong,HE Yan-lin,DING Xiu-ping,et al.Effect of high temperature aging onσ-phase precipitation in a 2205 duplex stainless steel[J].Transactions of Materials and Heat Treatment,2010,31(3):48-51.

文章评论(Comment)：