Evaluating susceptibility of Ni-base alloys to solidification cracking by transverse-motion weldability test
Evaluating susceptibility of Ni-base alloys to solidification cracking by transverse-motion weldability test
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DOI：
10.1080/13621718.2020.1802897
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发表时间：
2020-08
影响因子：
3.3
通讯作者：
Chunzhi Xia;S. Kou
中科院分区：
文献类型：
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作者：
Chunzhi Xia;S. Kou
横向运动焊接性（TMW）试验，其中搭接焊中的下板在焊接的横向方向上以恒定速度V移动以诱导凝固裂纹，被施加到Ni基合金。合金600、625、718和800被用作用于演示的示例材料。合金的相对磁化率等级与报道的相似。类似的排名是根据以下因素计算的：|dT/天（fS）1/2|近似（fS）1/2 = 1（T：温度; fS：固体分数）。根据焊缝的横向显微照片和V值，估算了裂纹附近的临界局部应变速率。718的敏感性显著高于800，这与TMW试验显示718的敏感性显著较低一致。
The transverse-motion weldability (TMW) test, in which the lower sheet in lap welding is moved at a constant speed V in the transverse direction of welding to induce solidification cracking, was applied to Ni-base alloys. Alloys 600, 625, 718 and 800 were used as example materials for demonstration. The relative susceptibility ranking of the alloys was similar to those reported. A similar ranking was calculated based on |dT/d(fS)1/2| near (fS)1/2 = 1 (T: temperature; fS: fraction solid). Based on the transverse micrograph of the weld and V, the critical local strain rate near the crack was estimated. It was significantly higher for 718 than 800, consistent with the significantly lower susceptibility of 718 shown by the TMW test.