Effect of Post Weld Heat Treatment on Mechanical Properties and Microstructure of Nickel Based Super Alloy Welds
In the present paper, Haynes 214 plate of 7mm thick was welded by Gas tungsten arc welding (GTAW) in two passes. The welded plates were subjected to post-weld heat treatment such as direct aging (DA) and solution treatment + aging (STA). The aging cycle was optimized using hardness by generating isothermal aging curve. The weld tensile properties, hardness test, microscopic analysis and fractographic studies were carried out in as-welded condition and at two different post-weld heat treatment conditions. The results show a significant increase in both yield and tensile strength after post weld heat treatment.
B.S.S. Daniel and G.P. Chaudhari
M. Agilan et al., "Effect of Post Weld Heat Treatment on Mechanical Properties and Microstructure of Nickel Based Super Alloy Welds", Advanced Materials Research, Vol. 585, pp. 435-439, 2012