彭杏娜,马成勇,尹强,彭云,田志凌

• 1:北京国电富通科技发展有限责任公司
• 2:钢铁研究总院

摘要(Abstract)：

采用光学显微镜、扫描电镜及其EDS、相分析和XRD等分析方法,研究了Super304H钢焊缝及在不同高温(650℃)持久应力下的组织转变。结果表明,焊态下焊缝组织为奥氏体和析出相,析出相以铌相为主。经过高温持久拉伸后,焊缝组织的耐蚀性降低,析出铌相发生了一定程度的溶解,多呈长条状或块状分布,还出现了一定量的α相和M23C6相。此外,焊缝组织的凝固晶界和凝固亚晶界也在高温持久应力下发生了变化。

关键词(KeyWords)： Super304H钢;高温持久;焊缝金属;组织

Abstract:

Keywords:

基金项目(Foundation): 国家重点基础研究发展计划(“973”计划)(2010CB630800)

作者(Author): 彭杏娜,马成勇,尹强,彭云,田志凌

DOI: 10.13289/j.issn.1009-6264.2015.07.022

参考文献(References)：

• [1]李新梅,邹勇,张忠文,等.时效温度对Super304H钢析出相的影响[J].材料热处理学报,2009,30(6):51-56.LI Xin-mei,ZOU Yong,ZHANG Zhong-wen,et al.Effect of aging temperature on precipitation of Super304H steel[J].Transactions of Materials and Heat Treatment,2009,30(6):51-56.
• [2]陈国宏,潘家栋,刘俊建,等.650℃时效Super 304H耐热钢的显微结构与高温拉伸性能[J].材料热处理学报,2013,34(5):103-109.CHEN Guo-hong,PAN Jia-dong,LIU Jun-jian,et al.Microstructure and high-temperature tensile properties of Super 304H heat-resistant steel after ageing at 650℃[J].Transactions of Materials and Heat Treatment,2013,34(5):103-109.
• [3]欧平,孙坚,崔正强,等.Super304H奥氏体耐热钢时效后的组织结构[J].材料热处理学报,2014,35(5):85-91.OU Ping,SUN Jian,CUI Zheng-qiang,et al.Microstructure of Super304H Austenitic heat-resistant steel after long-term aging[J].Transactions of Materials and Heat Treatment,2014,35(5):85-91.
• [4]Iseda A,Okada H,Semba H.Long term creep properties and microstructure of SUPER304H,TP347HFG and HR3C for A-USC boilers[J].Energy Materials,2007,4(2):198-206.
• [5]埃里希福克哈德.不锈钢焊接冶金[M].北京:化学工业出版社,2004.
• [6]张忠文,李新梅,杜宝帅,等.时效温度对Super 304H钢焊缝金属组织和韧性影响[J].焊接学报,2011,32(7):43-46.ZHANG Zhong-wen,LI Xin-mei,DU Bao-shuai,et al.Effect of aging temperature on microstructure and toughness of welded metal of Surper 304H steel[J].Transactions of the China Welding Institution,2011,32(7):43-46.
• [7]Williams R O,Paxton H W.The nature of aging of binary iron-chromium alloys around 500℃[J].JISI,1957,18(5):,358-374.
• [8]Kotecki D J,Siewert T A.WRC-1992 constitution diagram for stainless steel weld metals:a modification of the WRC-1988 diagram[J]Welding Journal,1992,71(5):171-178.
• [9]雍岐龙.钢铁材料中的第二相[M].北京:冶金工业出版社,2006.
• [10]John C L,Damian J K.Welding Metallurgy and Weldability of Stainless Steels[M].John New York:Wiley&Sons,Inc,2005.

文章评论(Comment)：