Evaluating susceptibility of carbon steels to solidification cracking by transverse-motion weldability test
Evaluating susceptibility of carbon steels to solidification cracking by transverse-motion weldability test
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DOI：
10.1080/13621718.2020.1812211
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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
横向移动焊接性（TMW）测试适用于碳钢，通过在搭接焊接过程中以恒定速度 V 沿横向移动下板来诱发凝固裂纹。在较低 V 水平下发生的 V 过渡范围（在较低 V 下无裂纹和在较高 V 下完全裂纹之间）表明磁化率较高。磁化率随钢碳含量的变化与 Fe-C 相图相关，并与之前其他测试显示的结果进行了比较。将基于转变范围的标称临界应变率与基于焊接期间现场观察测量的临界应变率进行比较。
The transverse-motion weldability (TMW) test was applied to carbon steels, by moving the lower sheet during lap welding at a constant speed V in the transverse direction to induce solidification cracking. A transition range of V (between no cracking at lower V and full cracking at higher V) that occurred at a lower V level indicated a higher susceptibility. The variation in the susceptibility with the carbon content of the steel was related to the Fe–C phase diagram and compared to those shown previously by other tests. The nominal critical strain rate based on the transition range was compared to the critical strain rate based on measurement by in situ observation during welding.