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.

中文翻译：

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通过横向运动焊接性试验评估镍基合金的凝固裂纹敏感性

横向运动可焊性 (TMW) 试验，其中搭接焊中的下板以恒定速度 V 沿焊接横向移动以引起凝固裂纹，适用于 Ni 基合金。合金 600、625、718 和 800 用作示范材料。合金的相对敏感性等级与报道的相似。基于 |dT/d(fS )1/2| 计算出类似的排名 接近 (fS )1/2 = 1（T：温度；fS：固体部分）。根据焊缝的横向显微照片和 V，估计裂纹附近的临界局部应变率。718 显着高于 800，这与 TMW 测试显示的 718 显着较低的敏感性一致。