首页> 外文会议>AIST steel properties amp; applications conference proceedings combined with MSamp;T' 10 materials science and technology 2010 >Improvement of Microcracking Susceptibility in Dissimilar Multipass Weld Metal of Alloy 690 to Type 316L Stainless Steel by Using Ce-containing Filler Metal
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Improvement of Microcracking Susceptibility in Dissimilar Multipass Weld Metal of Alloy 690 to Type 316L Stainless Steel by Using Ce-containing Filler Metal

机译:含铈填充金属改善690合金与316L不锈钢的异种多道次焊接金属的微裂纹敏感性

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The microcracking susceptibility in dissimilar multipass weld metal of alloy 690 to type 316L stainless steel was investigated by using several filler metals with different Ce content. Ductility-dip cracks occurred in the compositional range of Ce/(P+S)<0.22 and solidification/liquation cracks occurred in that of Ce/(P+S)>l.l. The ductility-dip cracking susceptibility was reduced by Ce addition due to the scavenging of P and S. The excessive Ce addition resulted in solidification/liquation cracking alternatively attributed to the formation of Ni-Ce intermetallic compounds with low eutectic point. The optimal filler metal for dissimilar multipass welding would be 0.22
机译:通过使用几种不同Ce含量的填充金属,研究了690合金与316L不锈钢不同的多道焊缝金属中的微裂纹敏感性。在Ce /(P + S)<0.22的成分范围内发生了延性-浸裂,在Ce /(P + S)> 1.1的范围内发生了凝固/液化裂纹。由于清除了P和S,添加Ce降低了延展性-浸渍裂纹敏感性。过量添加Ce导致凝固/液化裂纹,或者归因于低共晶点Ni-Ce金属间化合物的形成。对于不同的多道次焊接,每道焊道的最佳填充金属应为0.22

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