Hostname: page-component-586b7cd67f-l7hp2 Total loading time: 0 Render date: 2024-11-25T17:54:14.200Z Has data issue: false hasContentIssue false
  • English
  • Français

Investigation of Superplastic Behavior of NiAI and Ni3Al Duplex Alloy

Published online by Cambridge University Press:  15 February 2011

Liu Zhenyun ,
Lin Dongliang ,
T. L. Lin ,
Gu Yuefeng  and
Shan Aidang
Liu Zhenyun
Affiliation:
Department of Materials Science, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
Lin Dongliang
Affiliation:
Department of Materials Science, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
T. L. Lin
Affiliation:
Department of Materials Science, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
Gu Yuefeng
Affiliation:
Department of Materials Science, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
Shan Aidang
Affiliation:
Department of Materials Science, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
Get access

Abstract

The superplastic behavior of a NiAI and Ni3Al duplex alloy was investigated. It was found that the alloy exhibits superplastic behavior over a narrow temperature range, from 975 °C to 1025°C at the strain rate of 1.52 × 10-4 s-1. A maximum tensile elongation of 149% was obtained at 1000°C with the strain rate sensitivity up to 0.375. The superplastic deformation of the duplex alloy can be approximately described by an empirical equation of the form: ε = Ao2.67 exp(-303,000 / RT). Optical microstructure and TEM observation show that the superplastic behavior mechanism of the investigated alloy is a process of continuous recovery and recrystallization during deformation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 460: Symposium Z – High-Temperature Ordered Intermetallic Alloys VII , 1996 , 461
Copyright
Copyright © Materials Research Society 1997

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Chang, K. M., Darolia, R., Lipsitt, H. A., Acta Metall. Mater., 40, p. 2727 (1992).Google Scholar
2. Darlia, R., J. Met., 43, p. 44 (1991)Google Scholar
3. Noebe, R. D., Cullers, C. L. and Bowman, R. R., J. Mater. Res., 7(3), p. 605 (1992).Google Scholar
4. Liu, C. T. in Grain Boundary Chemistry and Intergranular Fracture, Mat. Sci. Forum., 46, p. 355(1989)Google Scholar
5. Beckofen, W. A., Turner, I. R., Avery, D. H., Trans ASM, 51, p. 980 (1964).Google Scholar
6. Boeman, R. R., Noehe, R. D., Rai, S. V., Locci, I. E., Metall. Trans., 23A, p. 1492 (1992)Google Scholar
7. Ball, A., Smallman, R. E., Acta Metall., 14, p. 1349 (1966).Google Scholar
8. Hancock, G. F., Mcdonnell, B. R., Phys. Status Solidi(a), 4, p. 143 (1971).Google Scholar
9. Wandervoort, R. R., Makherjee, A. K., Dom, J. E., Trans. ASM, 59, p. 930 (1966).Google Scholar
10. Nieh, T. G., Proc. Mater. Res. Soc. Symp, 189, p. 196 (1990).Google Scholar
11. Mills, M. J., Miracle, D. B., Acta Metall. Mater. 41, p. 85 (1993).Google Scholar