Comparative study on the microstructure, mechanical properties and fracture mechanism of wire arc additive manufactured Inconel 718 alloy under the assistance of alternating magnetic field
Comparative study on the microstructure, mechanical properties and fracture mechanism of wire arc additive manufactured Inconel 718 alloy under the assistance of alternating magnetic field
复制标题
交变磁场辅助下电弧增材制造Inconel 718合金显微组织、力学性能及断裂机制对比研究
DOI：
10.1016/j.msea.2022.143845
复制
发表时间：
2022-08
期刊：
影响因子：
--
通讯作者：
Xinjun Shen
中科院分区：
文献类型：
--
作者：
Pengcheng Huan;Xia Wei;Xiaonan Wang;Hongshuang Di;Yu Chen;Qingyu Zhang;Xiaming Chen;Xinjun Shen
通过改变励磁电流，研究了交变磁场（AMF）作用下冷金属过渡工艺制备的Inconel 718合金的组织、力学性能和断裂机制。结果表明，AMF使熔滴偏转，改变了熔池最大温度梯度的方向，抑制了大柱状晶的生长，细化了晶粒，使{100}织构指数显著降低。0 A和40 A试样的显微组织由γ（Ni）+（TiN）[核/（NbC + TiC）[壳+ NbC + Laves]组成。0A样品的γ-Ni 3 Nb相长度（98 nm）大于40 A样品的γ-Ni 3 Nb相长度（84 nm）。AMF抑制了粗大的柱状晶，平均晶粒尺寸减小到161 μm。在AMF的作用下，Laves相的体积分数从2.4%显著降低到1.3%，Laves相的形貌从长条状变为颗粒状。AMF提高了材料的极限抗拉强度，降低了材料的各向异性。
In this study, the microstructure, mechanical properties and fracture mechanism of wire arc additive manufactured Inconel 718 alloy fabricated by cold metal transfer process under the action of the alternating magnetic field (AMF) are studied by changing the excitation current. The results show that the AMF deflects the droplet and changes the direction of the molten pool maximum temperature gradient, which inhibits the growth of large columnar crystals and refines the grains so that the index of {100} texture decreases significantly. The microstructure of the 0 A and 40 A samples is composed of γ(Ni) + (TiN) [nucleus/(NbC + TiC)[shell + NbC + Laves. The length of γʹʹ-Ni 3 Nb of the 0 A sample (98 nm) is greater than that of the 40 A sample (84 nm). The AMF suppresses the large columnar crystals, and the average grain size is reduced to 161 μm. The volume fraction of the Laves phases is significantly reduced from 2.4% to 1.3%, and the Laves phases morphology changes from long stripe to granular under the action of the AMF. AMF increases the ultimate tensile strength and decreases the anisotropy.
登录
查看更多内容
影响因子：
11
作者：
Bintao Wu;Zhijun Qiu;B. Dong;D. Wexler;Z. Pan;K. Carpenter;Diego Raimundi Corradi;Huijun Li
通讯作者：
Bintao Wu;Zhijun Qiu;B. Dong;D. Wexler;Z. Pan;K. Carpenter;Diego Raimundi Corradi;Huijun Li
DOI：
10.1016/0001-6160(70)90103-3
发表时间：
1970-11
期刊：
Acta Metallurgica
影响因子：
--
作者：
T. C. Lindley;G. Oates;C. Richards
通讯作者：
T. C. Lindley;G. Oates;C. Richards
DOI：
10.1016/j.msea.2022.143124
发表时间：
2022-04
期刊：
Materials Science and Engineering: A
影响因子：
--
作者：
Yayun Li;Pingwei Xu;Wei Jiang;Lei Zhou;Zihao Jiang;Yi-long Liang;Yu Liang
通讯作者：
Yayun Li;Pingwei Xu;Wei Jiang;Lei Zhou;Zihao Jiang;Yi-long Liang;Yu Liang
影响因子：
9.4
作者：
Sui, Shang;Tan, Hua;Huang, Weidong
通讯作者：
Huang, Weidong
DOI：
10.1007/s11661-015-3269-6
发表时间：
2016-02-01
影响因子：
2.8
作者：
Kwon, Soon Il;Bae, Sang Hyun;Hong, Hyun Uk
通讯作者：
Hong, Hyun Uk