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Pressure effects on flow and fracture of Be-Al alloys

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Abstract

The flow and fracture behavior of Be-Al alloys were determined in tension with different levels of superimposed pressure. The Be-Al alloys were prepared by Brush Wellman, Inc. (Cleveland, OH) from prealloyed powders processed to either a hot isostatically pressed (“hipped”) or cold isostatically pressed and extruded condition. Significant effects of pressure on both the flow and ductility have been observed at room temperature, with implications on the formability of these materials. The effects of changes in processing conditions and stress state on the flow and fracture behavior are summarized in addition to both optical and scanning electron microscopy (SEM) examination of the fracture surfaces. Separate other studies on the alloy constituents (e.g., Al and Be) are also reported. The results are also compared to previous works on monolithic materials and composites tested with high pressure.

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Authors and Affiliations

  1. Pratt & Whitney Canada, J4G 1A1, Longuevil, PQ, Canada

    Joël Larose (Failure Analyst)

  2. the Department of Materials Science and Engineering, Case Western Reserve University, 44106, Cleveland, OH

    John J. Lewandowski (Leonard Case Professor of Engineering)

Authors
  1. Joël Larose
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  2. John J. Lewandowski
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Larose, J., Lewandowski, J.J. Pressure effects on flow and fracture of Be-Al alloys. Metall Mater Trans A 33, 3555–3564 (2002). https://doi.org/10.1007/s11661-002-0343-7

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  • DOI: https://doi.org/10.1007/s11661-002-0343-7

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