Fatigue behavior and microstructural evaluation of Inconel 718 gas tungsten arc welds

Volume: 66, Issue: 1, Pages: 145 - 158
Published: Sep 23, 2021
Abstract
Microstructural and fatigue behavior of Inconel 718 weldments performed using gas tungsten arc welding process (GTAW) were studied. Ti and Nb segregation tends to form brittle phases (Laves, NbC and TiC), which were identified in the interdendritic region of the weld metal (WM). The heat generated to weld Inconel 718 produced a microstructural transformation of the γ´´ (Ni3Nb), decreasing the microhardness in comparison to the base metal (BM)....
Paper Details
Title
Fatigue behavior and microstructural evaluation of Inconel 718 gas tungsten arc welds
Published Date
Sep 23, 2021
Volume
66
Issue
1
Pages
145 - 158
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