This work concerns the temperature and stress dependencies of the steady-state creep rate of a Ti-24Al-11Nb alloy in the temperature range between 593 and 760°C (1,100 and 1,400°F) and stress levels 137.9 to 275.8 MPa (20 to 40 ksi). Tests were conducted on both as-extruded and heat-treated specimens. A transition occurs in the creep curves at 704°C (1,300°F) and 206.9 MPa (30 ksi), indicating a creep mechanism change. Generally speaking, the fracture surface of as-extruded specimens shows a ductile transgranular fracture mechanism; a more ductile fracture mode is observed for heat-treated specimens.
This is a preview of subscription content, access via your institution.
Buy single article
Instant access to the full article PDF.
Tax calculation will be finalised during checkout.
R.S. Mishra and D. Banerjee, Mat. Sci. Eng., A130, 151 (1990).
R.W. Hayes, Scripta Metall., 23, 1931 (1989).
The authors wish to express their appreciation to Nuclear Metals, Inc. for providing the experimental material and Northeastern University for conducting the experiments.
About this article
Cite this article
Wang, W., Chien, LT. Creep and Stress Rupture Behavior of Ti-24Al-11Nb. MRS Online Proceedings Library 288, 763–768 (1992). https://doi.org/10.1557/PROC-288-763