Campus Units

Materials Science and Engineering, Ames Laboratory

Document Type

Book Chapter

Publication Version

Published Version

Publication Date


Journal or Book Title

Trace and Reactive Metals: Processing and Technology

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Last Page



In-situ composites were produced in both Ti matrix (Ti-20Y) and Mg matrix (Mg-20Ti, Mg- 20Nb, Mg-20Fe, and Mg-8Li) alloys. In Ti-20Y, a < 1010 > fiber texture formed in both the Ti and Y phases, and UTS increased from 240 MPa (as-cast) to 950 MPa after deformation processing to a true strain of 7.3. Deformation processing produced smaller UTS increases in the Mg-matrix composites, but they showed exceptional resistance to weakening from exposure to elevated temperatures. The Mg-20Fe, Mg-20Nb, and Mg-20Ti composites tolerated 6-hour exposure to 400°C with no reduction in their 250 to 300 MPa room temperature UTS. All composites studied had excellent ductility and machinability.


This chapter is published as Jensen, J. A., Alan M. Russell, T. W. Ellis, and L. Scott Chumbley. "HCP Matrix In-situ Composites." In Trace and Reactive Metals: Processing and Technology. (Proceedings of International Symposium on Extraction and Processing of Trace and Reactive Metals, R. G. Reddy and B. Mishra, eds.) Warrendale, PA: The Minerals, Metals & Materials Society, 1995. Pages 221-236. Posted with permission.

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The Minerals, Metals & Materials Society



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