Hostname: page-component-77c89778f8-gq7q9 Total loading time: 0 Render date: 2024-07-18T18:01:06.005Z Has data issue: false hasContentIssue false
  • English
  • Français

In-Situ Observation of Microcracking in a Tial-Cr-V Alloy Under Compressive Stress

Published online by Cambridge University Press:  22 February 2011

Z. J. Pu ,
Y. Q. Liu  and
K. H. Wu
Z. J. Pu
Affiliation:
Florida International University, Miami, FL 33199USA
Y. Q. Liu
Affiliation:
Florida International University, Miami, FL 33199USA
K. H. Wu
Affiliation:
Florida International University, Miami, FL 33199USA
Get access

Abstract

The entire process of microcrack nucleation in a TiAl-Cr-V alloy with different microstructures is observed in situ by a scanning electronic microscope (SEM) during compressive deformation. The main results are summarized as follows: (1) In the fully lamellar microstructure, the microcracks nucleate mainly at the lamellar grain boundaries between soft-orientation and hard-orientation grains. (2) In the Widmanstatten structure, the microcracks distribute mainly at the intersection between two Widmanstatten plates. (3) In the duplex structure, the microcracks form at the lamella/ lamella and lamella/gamma boundaries. (4) In the nearly gamma structure, microcracks nucleate at gamma/gamma grain boundaries.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 364: Symposium L – High-Temperature Ordered Intermetallic Alloys–VI , 1994 , 1041
Copyright
Copyright © Materials Research Society 1995

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

1. Kim, Y-W., JOM 46 (7) (1994) P.30 Google Scholar
2. Kim, Y-W. and Dimiduk, D. M., JOM, 43 (8) (1991), pp. 40–47.Google Scholar
3. Chan, K. S., JOM, 44 (5) (1992), pp. 30–38.Google Scholar
4. Huang, S. C. and Shin, D. S., “Microstructure/Property Relationship,” Titanium Aluminides and Alloys, Eds., Kim, Y-W. and Bayer, R. R., Warrendale, PA, TMS (1990), p. 105.Google Scholar
5. Pu, Z. J., Shi, J. D., Zou, D. X., and Zhong, Z. Y., Journal of Materials Science and Technology, V 9 (1993) P.453.Google Scholar
6. Inui, H., Nakamura, A., Oh, M. H., and Yamaguchi, M., Phil. Mag. A66, 557 (1992).Google Scholar
7. Stroh, A. N., Proc. R. Soc, 223A (1954), p. 404.Google Scholar