Review of the Current Status of Domestic and International Research on Inconel 625 Alloy

Author of the article:YANG Penghui, DU Linlin, WANG Rong, LA Peiqing, GUO Tieming

Author's Workplace：School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China

Key Words： Inconel 625; shaping; microstructure and properties; molten salt corrosion

Abstract： Inconel 625 is widely used in various industrial fields due to its excellent comprehensive performance. With the development of various industries, the performance requirements of Inconel 625 alloys are increasing. Therefore, it is very necessary to further improve the microstructure and properties of the Inconel 625 alloy. This paper summarizes the research of molding preparation, microstructure and properties, molten salt corrosion and other aspects of Inconel 625 alloy in the past seven years, among which the forming methods are reviewed from 3D printing technology (i.e., additive manufacturing) and surface modification technology. In terms of performance, the chemical composition and heat treatment process are mainly summarized. In molten salt corrosion, fluoride salt, nitrate, carbonate, sulfate and so on are discussed. Finally, the future development prospects of Inconel 625 alloy are also presented. This work provides practical guidance for future Inconel 625 research.