In this study, the characterization of laser weld joint on transformation-induced plasticity (TRIP) steel sheets coupled with Nd:YAG laser welding was investigated, and the influence of welding conditions like angle of weld, power of laser, and welding speed on the strength of the joint was measured. The microstructure, tensile behavior, and microhardness of TRIP laser-welded sheets were examined in detail. The power was maintained constant, i.e., 1800 W, and by relatively varying the velocity from 25 to 30 mm/s, the strength of the joint increased drastically to 11%. In contrast, by varying the power, the effect of velocity was reduced; however, the point performance was enormously stable. Finally, the microhardness behavior of the heat-affected zone and fusion zone was investigated and discussed.In this study, the characterization of laser weld joint on transformation-induced plasticity (TRIP) steel sheets coupled with Nd:YAG laser welding was investigated, and the influence of welding conditions like angle of weld, power of laser, and welding speed on the strength of the joint was measured. The microstructure, tensile behavior, and microhardness of TRIP laser-welded sheets were examined in detail. The power was maintained constant, i.e., 1800 W, and by relatively varying the velocity from 25 to 30 mm/s, the strength of the joint increased drastically to 11%. In contrast, by varying the power, the effect of velocity was reduced; however, the point performance was enormously stable. Finally, the microhardness behavior of the heat-affected zone and fusion zone was investigated and discussed.

中文翻译：

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激光束焊接功率和速度对TRIP钢对接焊缝影响的研究

在本研究中，研究了相变诱导塑性 (TRIP) 钢板激光焊接接头与 Nd:YAG 激光焊接的结合特性，以及焊接角度、激光功率和焊接速度等焊接条件对焊接接头的影响。测量接头的强度。详细研究了 TRIP 激光焊接板的微观结构、拉伸行为和显微硬度。功率保持恒定，即 1800 W，通过将速度从 25 到 30 mm/s 的相对变化，接头的强度急剧增加到 11%。相反，通过改变功率，降低了速度的影响；然而，点性能非常稳定。最后，对热影响区和熔合区的显微硬度行为进行了研究和讨论。研究了相变诱导塑性 (TRIP) 钢板激光焊接接头与 Nd:YAG 激光焊接的结合特性，研究了焊接角度、激光功率、焊接速度等焊接条件对接头强度的影响被测量。详细研究了 TRIP 激光焊接板的微观结构、拉伸行为和显微硬度。功率保持恒定，即 1800 W，通过将速度从 25 到 30 mm/s 的相对变化，接头的强度急剧增加到 11%。相反，通过改变功率，降低了速度的影响；然而，点性能非常稳定。最后，对热影响区和熔合区的显微硬度行为进行了研究和讨论。