Effect of Nb content on microstructure stability and stress rupture properties of single crystal superalloy containing Re and Ru

• Published in: Journal of Central South University Vol. 23; no. 6; pp. 1293 - 1300
• Main Authors: Shi, Zhen-xue, Liu, Shi-zhong, Yue, Xiao-dai, Wang, Xiao-guang, Li, Jia-rong
• Format: Journal Article
• Language: English
• Published: Changsha Central South University 01.06.2016
• Subjects: Chemical and Environmental Engineering; Engineering; Materials; Metallic Materials; Metallurgy; long-term aging; stress rupture properties; Nb; microstructure stability; single crystal superalloy

Three experimental single crystal superalloys with 0%Nb, 0.5%Nb, 1.0%Nb were cast in the directionally solidified furnace, while other alloying element contents were basically kept unchanged. The effect of Nb on the microstructure, stability at 1100 °C and stress rupture properties at 1070 °C and 16...