迟露鑫,陈重毅,麻永林,邢淑清,方立新

• 1:重庆理工大学材料科学与工程学院
• 2:内蒙古科技大学材料与冶金学院

摘要(Abstract)：

为了研究焊后热处理对8万吨模锻压机主缸材料20MnNiMo焊接接头残余应力的影响,制定了窄间隙焊接方案和15 h×(550±10)℃焊后热处理方案,并通过盲孔法对焊接接头表面残余应力进行了测定和记录。得到了15 h×(550±10)℃焊后热处理对20MnNiMo厚板焊接接头残余应力场分布的影响。结果表明:15 h×(550±10)℃去应力退火可以很好的减小20MnNiMo厚板焊接残余应力,去应力效果显著,可以很好地改善20MnNiMo焊接残余应力的分布,该热处理方案满足实际产品需要,可以用于实际焊接生产中。

关键词(KeyWords)： 20MnNiMo;残余应力;焊后热处理;盲孔法

Abstract:

Keywords:

基金项目(Foundation): 科技重大专项子课题项目(2009ZX04014-064-05)

作者(Author): 迟露鑫,陈重毅,麻永林,邢淑清,方立新

DOI: 10.13289/j.issn.1009-6264.2012.04.021

参考文献(References)：

• [1]张显辉,焦伟,谭长瑛.20MnNiMo钢焊接热影响区的组织和韧性及其氢致裂纹特征[J].焊接学报,2000,21(1):9-12.ZHANG Xian-hui,JIAO Wei,TAN Chang-ying.HAZ structure,toughness and characteristics to hydrogen-induced cracking(HIC)of steel20MnNiMo[J].Transactions of the China Welding Institution,2000,21(1):9-12.
• [2]徐连勇,荆洪阳,周春亮,等.焊后热处理对P92钢管道焊接残余应力场的影响[J].焊接学报,2010,31(3):13-16.XU Lian-yong,JING Hong-yang,ZHOU Chun-liang,et al.Influence of heat treatment on residual stress of P92steel pipe girth weld[J].Transactions of the China Welding Institution,2010,31(3):13-16.
• [3]吴运祥.低合金高强钢焊接构件在高温锅炉水中的应力腐蚀开裂行为研究[J].压力容器,2010,27(6):1-6.WU Yun-xiang.Investigation on stress corrosion cracking behavior of weld joint of low alloy steel switches high strength in high temperature boiler feed water[J].Pressure Vessel Technology,2010,27(6):1-6.
• [4]张显辉,谭长瑛,陈佩寅.焊接接头氢扩散数值模拟(I)[J].焊接学报,2000,21(3):51-54.ZHANG Xian-hui,TAN Chang-ying,CHEN Pei-yin.Numerical simulation of hydrogen diffusion in welded joint(I)[J].Transactions of the China Welding Institution,2000,21(3):51-54.
• [5]张显辉,焦伟,谭长瑛.20MnNiMo钢焊接氢致裂纹特征(Ⅱ)[J].焊接学报,2002,23(3):23-25.ZHANG Xian-hui,JIAO Wei,TAN Chang-ying.Hydrogen-induced cracking feature of steel20MnNiMo[J].Transactions of the China Welding Institution,2002,23(3):23-25.
• [6]周方明,王江超,周涌明,等.提高小孔法测量焊接残余应力精度的研究[J].热加工工艺,2007,36(15):67-69.ZHOU Fang-ming,WANG Jiang-chao,ZHOU Yong-ming,et al.Research on improving measure precision of weld residual stress with little hole method[J].Hot Working Technology,2007,36(15):67-69.
• [7]Dean Deng,Kazuo Ogawa,Shoichi Kiyoshima.Prediction of residual stresses in a dissimilar metal welded pipe with considering cladding,buttering and post weld heat treatment[J].Computational Materials Science,2009,47(2):398-408.
• [8]Mirzaee-Sisan A,Fookes A J,Truman C E,et al.Residual stress measurement in a repair welded header in the as-welded condition and after advanced post weld treatment[J].International Journal of Pressure Vessels and Piping,2007,84(5):265-273.
• [9]Cho J R,Lee B Y,Moon Y H,et al.Investigation of residual stress and post weld heat treatment of multi-pass welds by finite element method and experiments[J].Journal of Materials Processing Technology,2004,155-156:1690-1695.
• [10]Olabi A G,Hashmi M S J.The effect of post-weld heat-treatment on mechanical-properties and residual-stresses mapping in welded structural steel[J].Journal of Materials Processing Technology,1995,55(2):117-122.

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