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Microstructure, deformation, and fracture characteristics of an Al67Pd8Ti25 intermetallic alloy

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Abstract

Microstructure, indentation, and fracture characteristics of an intermetallic alloy with nominal composition Al67Pd8Ti25 have been investigated. Following a homogenization anneal at 1323 K, the material consists primarily of a phase having the Ll2 crystal structure. This phase is analogous to the π phase previously reported in (Al,X)3Ti alloys, where X represents Ni, Cu, Zn, or Fe substituted for Al in Al3Ti. The deformation and fracture characteristics of Al67Pd8Ti25 are similar to those previously reported for Al67Ni8Ti25: Vickers hardness is moderate, plastic deformation occurs by a0 «110» 111 slip, and fracture in bending occurs by transgranular cleavage with no evidence of associated plasticity.

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Authors and Affiliations

  1. Metals Research Laboratories, OLIN Corporation, 06511, New Haven, CT

    W. O. Powers (Research Scientist)

  2. Department of Materials Science, School of Engineering and Applied Science, University of Virginia, 22903-2442, Charlottesville, VA

    J. A. Wert (Associate Professor)

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  1. W. O. Powers
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  2. J. A. Wert
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Powers, W.O., Wert, J.A. Microstructure, deformation, and fracture characteristics of an Al67Pd8Ti25 intermetallic alloy. Metall Trans A 21, 145–151 (1990). https://doi.org/10.1007/BF02656432

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  • DOI: https://doi.org/10.1007/BF02656432

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