Effect of post-weld heat treatment on the microstructure and mechanical properties of laser-welded joints of SLM-316 L/rolled-316 L
Effect of post-weld heat treatment on the microstructure and mechanical properties of laser-welded joints of SLM-316 L/rolled-316 L
复制标题
焊后热处理对SLM-316 L/rolled-316 L激光焊接接头显微组织和力学性能的影响
DOI：
10.1515/htmp-2022-0235
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发表时间：
2022-01
影响因子：
1.5
通讯作者：
Zhidong Yang
中科院分区：
文献类型：
--
作者：
Hongwei Sun;Xiaopeng Lin;Xiaoyan Gu;Chenfu Fang;Zhidong Yang
Abstract. Connecting small pieces of parts manufactured by Selective Laser Melting (SLM) and traditional formed parts into large structural component by using welding technology provides a high-efficiency and low-cost way for expanding additive manufacturing technology. SLMed parts usually exhibit similar or superior tensile strength but lower ductility compared to that of cast or rolled ones due to the rapid cooling and cyclic heating deposition characteristics. What about the weldability of the dissimilar joints of SLMed parts and rolled ones? Whether the properties of the welded joints can be improved by heat treatment under the premise of ensuring the reliability of the joint is unclear. The weldability and the effect of heat treatment temperature on the microstructure and properties of laser-welded joints of SLM-316 L/rolled-316 L are studied in this article. The results show that the joints exhibit good weldability without obvious defects. The low temperature annealing treatment had no significant effect on the multilayered structure and columnar austenite grains, but only changed the morphology and content of ferrite within the grains leading to the slight increase of elongation but decrease of material strength. The corrosion performance was almost unaffected. After solution annealing above 1,000°C, the ferrite was nearly dissolved in the austenite matrix. The austenite recrystallized and the multilayered structure was destroyed, which resulted in decrease of material strength, a slightly improvement in corrosion resistance, and the elongation was greatly enhanced. After the detailed study, it was concluded that the post-weld heat treatment provided an effective way for improving the overall performance of the SLM-316 L/rolled-316 L dissimilar joint.
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影响因子：
6.2
作者：
Peng Liu;Jiaying Hu;Huai-xue Li;Siyu Sun;Yuan-bin Zhang
通讯作者：
Peng Liu;Jiaying Hu;Huai-xue Li;Siyu Sun;Yuan-bin Zhang
DOI：
10.1016/j.jmrt.2021.03.101
发表时间：
2021-04
期刊：
Journal of materials research and technology
影响因子：
--
作者：
G. Moeini;S. Sajadifar;T. Wegener;C. Rößler;A. Gerber;S. Böhm;T. Niendorf
通讯作者：
G. Moeini;S. Sajadifar;T. Wegener;C. Rößler;A. Gerber;S. Böhm;T. Niendorf
DOI：
10.1016/j.matpr.2021.02.447
发表时间：
2021-03
期刊：
Materials Today: Proceedings
影响因子：
--
作者：
S. Periane;A. Duchosal;S. Vaudreuil;H. Chibane;A. Morandeau;M. Anthony Xavior;R. Leroy
通讯作者：
S. Periane;A. Duchosal;S. Vaudreuil;H. Chibane;A. Morandeau;M. Anthony Xavior;R. Leroy
影响因子：
4.4
作者：
Kumar, Amit;Pandey, Chandan
通讯作者：
Pandey, Chandan
DOI：
10.1016/j.msea.2021.142446
发表时间：
2022-01
期刊：
Materials Science and Engineering: A
影响因子：
--
作者：
C. Wang;P. Zhu;Y.H. Lu;T. Shoji
通讯作者：
C. Wang;P. Zhu;Y.H. Lu;T. Shoji