High-Temperature Creep-Deformation Behavior of the Ni-Based Superalloy M963

Authors

Hongtao Zhu, University of WollongongFollow
Cheng Lu, University of WollongongFollow
A K. Tieu, University of WollongongFollow
Lizi He, University of Wollongong
Q. Zheng, Chinese Academy of Science
X. F. Sun, Chinese Academy of Science
Z. Q. Hu, Chinese Academy of Science
H. R. Guan, Chinese Academy of Science

RIS ID

13868

Publication Details

He, L., Tieu, A. K., Lu, C., Zhu, H., Zheng, Q., Sun, X., Guan, H. Hu, Z. (2005). High-Temperature Creep-Deformation Behavior of the Ni-Based Superalloy M963. Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science, 36A 2385-2391. >

Abstract

The high-temperature creep-deformation behavior of a Ni-based M963 superalloy has been investigated over a broad stress range of 80 to 600 MPa at high temperatures (800 °C to 975 °C). The detailed dislocation configurations at different creep stages are examined through transmission electron microscopy (TEM). The results show that the deformation mechanism is stress and temperature dependent and mainly consists of three dislocation-controlling mechanisms: stacking faults and dislocation-pair shearing, dislocation bowing and Orowan looping, and dislocation climb.