当前位置: X-MOL 学术Mater. Sci. Eng. A › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Microstructure evolution and mechanical properties of cold metal transfer additive manufactured Ti–6Al–4V wall with trace MoSi2 addition
Materials Science and Engineering: A ( IF 6.4 ) Pub Date : 2020-09-12 , DOI: 10.1016/j.msea.2020.140160
Jian Gou , Zhijiang Wang , Shengsun Hu , Wen Feng Lu , Junqi Shen

The effects of trace MoSi2 addition on the microstructure evolution, mechanical properties and fracture behavior of Ti–6Al–4V wall via cold metal transfer additive manufacturing (CMTAM) were investigated. After the addition of trace MoSi2 powder, trace (β-Ti, Mo) phases and SiO2 particles were obtained and partly prior-β→α’ phase transformation was suppressed. Compared with the as-built Ti–6Al–4V wall, the prior-β grains changed from columnar to the equiaxed or near-equiaxed after the addition of trace MoSi2. The tensile analysis result revealed that the addition of trace MoSi2 could improve the average strain while reduce anisotropy. All specimens showed dimples corresponding to ductile failure mode. The possible thermal cycles for the trace-MoSi2-addition specimens during the CMTAM process were analyzed.



中文翻译:

组织演变和冷金属传输添加剂的机械性能。制造的Ti-6AL-4V壁具有痕量的MoSi 2加法

研究了微量MoSi 2添加对通过冷金属转移增材制造(CMTAM)形成的Ti-6Al-4V壁的组织演变,力学性能和断裂行为的影响。加入痕量MoSi2粉末后,获得痕量(β-Ti,Mo)相和SiO 2颗粒,部分抑制了先验β→α'相变。与建成的Ti-6Al-4V壁相比,添加痕量MoSi 2后,先验β晶粒从柱状变为等轴或接近等轴。拉伸分析结果表明,添加了微量的MoSi 2可以改善平均应变,同时降低各向异性。所有标本都显示出对应于韧性破坏模式的凹痕。分析了在CMTAM过程中微量MoSi 2加成样品的可能热循环。

更新日期:2020-09-12
down
wechat
bug