Investigation on the microstructure and microhardness of Inconel 825 thick wall fabricated by wire arc additive manufacturing

被引：9
|
作者：
Kumar, M. Bhuvanesh [1 ,2 ]
Sathiya, P. [1 ]
Kannan, G. Rajesh [1 ]
Karthikeyan, M. [3 ]
机构：
[1] Natl Inst Technol Tiruchirappalli, Dept Prod Engn, Tiruchirappalli 620015, Tamil Nadu, India
[2] Kongu Engn Coll, Dept Mech Engn, Perundurai 638060, Tamil Nadu, India
[3] Coimbatore Inst Technol, Dept Mech Engn, Coimbatore 641014, Tamil Nadu, India
来源：
MATERIALS LETTERS | 2022年 / 317卷
关键词：
Wire arc additive manufacturing; Inconel; 825; Microstructure; Microhardness; Additive manufacturing; MECHANICAL-PROPERTIES;
D O I：
10.1016/j.matlet.2022.132115
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, wire arc additive manufacturing based on cold metal transfer was used to fabricate the Inconel 825 alloy thick wall. With no visible defects, the deposition was mainly consisted of Ni-Cr-based gamma-phase matrix. The grain morphology in terms of size, shape and orientation, and hardness property were varied along the build direction. Columnar dendrites are the major grains found with varying sizes and orientations due to different heat transfer modes. The microhardness at top layer with fine grains exhibited a higher value of 239.9 HV, and middle layer with columnar grains exhibited a lower value of 174.7 HV.
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页数：4
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