Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-25T15:23:59.059Z Has data issue: false hasContentIssue false
  • English
  • Français

Physical and Mechanical Properties of Two-Phase Zr-Cr-Mn Alloys

Published online by Cambridge University Press:  10 February 2011

A. Goldberg  and
D. E. Luzzi
A. Goldberg
Affiliation:
Department of Materials Science, University of Pennsylvania, Philadelphia, PA 19104, [email protected]
D. E. Luzzi
Affiliation:
Department of Materials Science, University of Pennsylvania, Philadelphia, PA 19104, [email protected]
Get access

Abstract

The Zr-Cr-Mn system is used to explore the effect of a lowered SFE on the room temperature mechanical properties of a Laves phase using elements of similar atomic size. The ternary Zr-Cr-Mn diagram in the region from 0 to 12 at. % Mn is first determined and it is shown that Mn substitutes only for Cr in the Laves phase. TEM analysis of the density of stacking fault energy related defects such as annealing twins indicates that Mn substitution for Cr in ZrCr2 lowers the SFE of the cubic Laves phase. Mechanical testing of the two phase alloys is used to explore the effects of Mn content and the volume fraction of each phase on the ductility and fracture behavior in compression. It is found that the mechanical properties are well-described by a model incorporating solid solution strengthening in a ductile-brittle two phase alloy.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 552: Symposium KK – High-Temperature Ordered Intermetallic Alloys VIII , 1998 , KK7.3.1
Copyright
Copyright © Materials Research Society 1999

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. Livingston, J.D. and Hall, E.L., Room-Temperature Deformation in a Laves Phase. Journal of Materials Research, 1990. 5: p. 5.Google Scholar
2. Luzzi, D.E., et al., Deformation Twinning at Low Temperatures in a Hf-V-Nb Cubic Laves Phase. Acta Materialia, 1998. 221: p. 2913.Google Scholar
3. Chu, F. and Pope, D.P., Deformation Twinning in Intermetallic Compounds - the Dilemma of Shears vs. Shuffles. Materials Science and Engineering, 1993. A170: p. 39.Google Scholar
4. Luzzi, D.E., Analysis of Stacking Faults in the Hf-V-Nb Cubic Laves Phase. Scripta Materialia, 1997. 37: p. 713.Google Scholar
5. Prima, S.B., Tret'yachenko, L.A., and Pet'kov, Y, The Pseudobinary Sections ZrMn2-ZrCr2 and ZrMn2-ZrV2. Metallofizika, Kiev, 1974. 52: p. 75.Google Scholar