Creep and Stress Rupture Behavior of Ti-24Al-11Nb

Abstract

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.

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References

  1. 1.

    R.S. Mishra and D. Banerjee, Mat. Sci. Eng., A130, 151 (1990).

    CAS  Article  Google Scholar 

  2. 2.

    R.W. Hayes, Scripta Metall., 23, 1931 (1989).

    CAS  Article  Google Scholar 

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Acknowledgments

The authors wish to express their appreciation to Nuclear Metals, Inc. for providing the experimental material and Northeastern University for conducting the experiments.

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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

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