|About this Abstract
|2023 TMS Annual Meeting & Exhibition
|Advanced Characterization of High-temperature Alloys: Phase Evolution during Manufacturing and Service-induced Deformation
|Effects of Heat-Treatment on the High-Temperature Wear Behaviors of Additively Manufactured Inconel 718
|Zhengyu Zhang, Wenjun Cai
|On-Site Speaker (Planned)
Various high temperature applications such as control rods, thrust bearings, shafts, and fasteners in nuclear power plants, compressors, propulsion systems and aero engines demands structural materials with excellent wear resistance at high temperatures. In this study, the microstructure, mechanical, and tribological characteristics of Inconel 718 produced via laser powder bed fusion were studied experimentally. In a ball-on-plate mode, the hot tribological behavior of the alloys fabricated with and without heat treatment was studied from 600 °C to 900 °C. The worn surfaces and cross-sections were analyzed with the aid of SEM/EDS, XRD and XPS analysis. The differences in wear rate and coefficient of friction of Inconel 718 with and without heat treatment were observed. In the end, the high temperature wear behavior of these alloys is discussed based on both experimental and CALPHAD calculation results to elucidate the different roles of individual alloying component on surface oxidation and friction.
|Additive Manufacturing, Mechanical Properties, High-Temperature Materials