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Tensile Deformation of a Nickel-base Alloy at Elevated Temperatures

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Abstract

The results of tensile testing involving Waspaloy indicate that the failure strain was gradually reduced at temperatures ranging between ambient and 300 °C. Further, serrations were observed in the engineering stress versus strain diagrams in the temperature range of 300-600 °C. The reduced failure strain and the formation of serrations in these temperature regimes could be the result of dynamic strain aging of this alloy. The extent of work hardening due to plastic deformation was reduced at temperatures above 300 °C. A combination of ductile and intergranular brittle failures was seen at temperatures above 600 °C. γ′ was detected at all tested temperatures.

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Acknowledgment

The financial support of the United States Department of Energy under grant number DE-FC07-04ID14566 is thankfully acknowledged.

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of Nevada Las Vegas (UNLV), 4505 Maryland Parkway, Box 454027, Las Vegas, NV, 89154-1027, USA

    Ajit K. Roy, Anand Venkatesh, Vikram Marthandam & Arindam Ghosh

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  1. Ajit K. Roy
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  2. Anand Venkatesh
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  3. Vikram Marthandam
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  4. Arindam Ghosh
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Correspondence to Ajit K. Roy.

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Roy, A., Venkatesh, A., Marthandam, V. et al. Tensile Deformation of a Nickel-base Alloy at Elevated Temperatures. J. of Materi Eng and Perform 17, 607–611 (2008). https://doi.org/10.1007/s11665-007-9189-x

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  • DOI: https://doi.org/10.1007/s11665-007-9189-x

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