High-pressure strengths of Ni3Al and Ni-Al-Cr

Raju, SV and Godwal, BK and Singh, AK and Jeanloz, R and Saxena, SK (2018) High-pressure strengths of Ni3Al and Ni-Al-Cr. Journal of Alloys and Compounds, 741. pp. 642-647. ISSN 09258388

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Abstract

High-pressure x-ray diffraction on Ni3Al, non-hydrostatically compressed at room temperature to 30 GPa in radial geometry can be interpreted in terms of a hydrostatic pressure–volume equation of state. We found the yield strength of Ni3Al to increase from about 0.2 to 2 GPa as pressure increases from 0 to 30 GPa. Yield-strength values determined from x-ray diffraction in axial geometry by including a Poisson ratio effect and pressure gradient methods are in good accord with each other. Our results indicate that the strengths of both pure and Cr-doped (7 at. %) Ni3Al increase with pressure, with the yield strength of Ni3Al slightly higher than Ni-Al-Cr alloy.

Item Type: Article
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
CHEMISTRY AND MATERIALS > Composite Materials
Depositing User: Mrs SK Pratibha
Date Deposited: 05 Jul 2019 15:51
Last Modified: 05 Jul 2019 15:51
URI: http://nal-ir.nal.res.in/id/eprint/13169

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