Selection of filler wire for and effect of auto tempering on the mechanical properties of dissimilar metal joint between 403 and 304L(N) stainless steels
Selection of filler wire for and effect of auto tempering on the mechanical properties of dissimilar metal joint between 403 and 304L(N) stainless steels
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DOI：
10.1016/j.jmatprotec.2008.03.053
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发表时间：
2009-02
影响因子：
6.3
通讯作者：
C. Das;A. K. Bhaduri;G. Srinivasan;V. Shankar;S. Mathew
中科院分区：
文献类型：
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作者：
C. Das;A. K. Bhaduri;G. Srinivasan;V. Shankar;S. Mathew
研究了用ERNiCr-3填充金属气体钨极电弧焊制备奥氏体304L(N)不锈钢与马氏体403 SS异种焊缝的可焊性。在本研究中，这两种材料的12mm厚板采用k型焊接坡口连接，403 SS侧的直边使用ERNiCr-3填充丝涂黄油。制备了两种类型的焊接接头，一种是涂黄油的403 SS，另一种是涂黄油和焊后热处理的403 SS板。用涂有黄油的403SS板制成的接头在403SS侧热影响区（HAZ）表现出良好的弯曲延展性和韧性，与涂有黄油和焊后热处理的403SS焊接接头性能相当。因此，由于焊接热循环形成的403 SS热影响区中马氏体的自动回火，涂黄油使403 SS板与304L(N) SS板在没有任何焊后热处理的情况下进行了不同的焊接。
Weldability of the dissimilar weld joint between austenitic 304L(N) stainless steel (SS) and martensitic 403 SS made by gas tungsten arc welding process using ERNiCr-3 filler metal has been studied. For this study, 12mm thick plates of these two materials were joined using a K-type weld groove joint, with the straight edge on the 403 SS side buttered using ERNiCr-3 filler wire. Two types of weld joints were prepared—one using as-buttered 403 SS and the other one with buttered and post-weld heat-treated 403 SS plate. The joint made with the as-buttered 403 SS plate exhibits good bend ductility and toughness on the heat-affected zone (HAZ) of the 403 SS side and it is comparable with that of the buttered and post-weld heat-treated 403SS weld joint properties. Thus, buttering of the 403 SS plate enabled dissimilar welding with the 304L(N) SS plate without any post-weld heat treatment because of auto tempering of the martensite present in the 403 SS HAZ formed due to weld thermal cycle.