Effects of synchronized magnetic arc oscillation on microstructure, texture, grain boundary and mechanical properties of wire arc additively manufactured Ti6Al4V alloy
Effects of synchronized magnetic arc oscillation on microstructure, texture, grain boundary and mechanical properties of wire arc additively manufactured Ti6Al4V alloy
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DOI：
10.1016/j.addma.2022.102723
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发表时间：
2022-03
影响因子：
11
通讯作者：
Bintao Wu;Zhijun Qiu;B. Dong;D. Wexler;Z. Pan;K. Carpenter;Diego Raimundi Corradi;Huijun Li
中科院分区：
文献类型：
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作者：
Bintao Wu;Zhijun Qiu;B. Dong;D. Wexler;Z. Pan;K. Carpenter;Diego Raimundi Corradi;Huijun Li
在本研究中，通过光学显微镜（OM）、电子背散射衍射（EBSD）、X射线衍射（XRD）、扫描电子显微镜（SEM）和标准拉伸试验研究了有/无磁弧振荡的线弧增材制造Ti6Al4V合金的显微组织和力学性能。结果表明，对于当前工作中制造的Ti6Al4V薄壁部件，添加同步磁电弧振荡（包括电弧振荡和电弧旋转）会细化片层α宽度，改变织构取向，然后增加小角度晶界。同时，磁弧振荡沉积的力学性能（屈服强度和极限抗拉强度）得到改善。研究结果表明，电弧振荡路径可用于电弧增材制造，在沉积过程中产生搅拌效应，有利于材料性能的改善。
In this study, microstructure and mechanical properties of wire arc additively manufactured Ti6Al4V alloy with/without magnetic arc oscillation were investigated by means of optical microscopy (OM), electron backscatter diffraction (EBSD), X-ray diffraction (XRD), scanning electron microscopy (SEM), and standard tensile testing. The results show that for Ti6Al4V thin-wall components fabricated in current work, the addition of synchronized magnetic arc oscillation, including both arc oscillation and arc rotation, leads to a refinement of lamellar α width, modification of texture orientation, and then increases in low angle grain boundaries. Meanwhile, the mechanical properties (yield strength and ultimate tensile strength) of the deposition with magnetic arc oscillation are improved. The findings reveal that the arc oscillation routes can be used in wire arc additive manufacturing to create a stirring effect in deposition, which is beneficial to improvement of material properties.