Effect of Strain Rate on the High-Temperature Mechanical Properties of a ZGH3030 Nickel-Based Superalloy

Author of the article:LU Hongguo1,2, ZHOU Li1 , MA Zhonggang2 , CUI Bin2 , LI Huakun2 , XU Lin2 , LI Na2 , WANG Guanghua2

Author's Workplace：1. School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, China; 2. Shandong Roitie New Material Science and Technology Co., Ltd., Zibo 256100, China; 3. School of Mechanical Engineering, Shandong University of Technology, Zibo 255049, China

Key Words：ZGH3030 nickel-based superalloy; strain rate; high-temperature tensile test; tensile strength

Abstract：Aiming at the phenomenon that the tensile strength of the remelted casting ZGH3030 alloy is lower than the standard value during the tensile test at 800 ℃, the WDW-100 testing machine was used in this test to study the influence of the beam displacement rate on the strength by setting different beam displacement rates for different mechanical test bars and changing the beam displacement rate of the same test bar during the test. The results show that the tensile strength of the ZGH3030 alloy can be changed by changing the beam displacement test conditions during the tensile test at 800 ℃. Therefore, the appropriate tensile strength can be obtained by reasonably setting the displacement rate of the beam, which is helpful for the tensile test of similar cast superalloys in the future.