Microstructure and mechanical properties of Inconel-625 slab component fabricated by wire arc additive manufacturing

被引：33
|
作者：
Ravi, G. [1 ]
Murugan, N. [1 ]
Arulmani, R. [2 ]
机构：
[1] PSG Coll Technol, Dept Robot & Automat Engn, Coimbatore 641004, Tamil Nadu, India
[2] Schlumberger Cameron Mfg India Pvt Ltd, Coimbatore, Tamil Nadu, India
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2020年 / 36卷 / 16期
关键词：
Wire arc additive manufacturing; microstructure characterisation; HRTEM; X-ray diffraction (XRD) and mechanical properties; DIRECT METAL-DEPOSITION; 625; ALLOY; EVOLUTION; STRATEGY;
D O I：
10.1080/02670836.2020.1836737
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Wire arc additive manufacturing is a promising reliable free-form fabrication technique suitable for producing large-scale components that feature a very low buy-to-fly ratio. This research work is aimed to fabricate a rectangular prototype Inconel-625 alloy slab using a robotic metal inert gas welding system. The microstructure and mechanical properties of as-deposited and solution-annealed (SA) alloys were investigated. It was found that the as-deposited alloy exhibited a columnar dendritic structure and the presence of intermetallic phases such as the Laves phase, NbC and carbides were observed in the gamma-nickel matrix. In SA deposit, the intermetallic phases were dissolved in the NiCr-matrix and the secondary carbides M23C6, M6C were also observed in the microstructure. It was found that the ultimate tensile strength and microhardness of the as-deposited alloy were higher than that of SA deposit.
引用
收藏
页码：1785 / 1795
页数：11
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