Residual Stress Distributions in Bi-Metal (Ferritic to Austenitic Steel) Joints Made by Laser Welding
Residual Stress Distributions in Bi-Metal (Ferritic to Austenitic Steel) Joints Made by Laser Welding
复制标题
激光焊接双金属（铁素体到奥氏体钢）接头的残余应力分布
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
J. Ocaña
中科院分区：
文献类型：
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作者：
J. Ruiz;M. Iordachescu;V. Luzin;M. Law;D. Iordachescu;J. Ocaña
本文采用激光自焊技术对低碳铁素体和奥氏体不锈钢薄板进行了焊接。由于母材热物性的差异，这类焊缝具有复杂的显微组织，经常导致接头质量的全面损失。以诱导残余应力场最小为目标，采用不同的工艺参数制备了4个焊接试件。采用显微组织表征和残余应变扫描(中子衍射法)对接头的性能进行了评价。
In this work, autogenous laser welding was used to join thin plates of low carbon ferritic and austenitic stainless steel. Due to the differences in the thermo-physical properties of base metals, this kind of welds exhibit a complex microstructure, which frequently leads to an overall loss of joint quality. Four welded samples were prepared by using different sets of processing parameters, with the aim of minimizing the induced residual stress field. Microstructural characterization and residual strain scanning (by neutron diffraction) were used to assess the joints’ features.