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Enhanced Relative Slip Distance in Gas-Tungsten-Arc-Welded Al0.5CoCrFeNi High-Entropy Alloy

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Abstract

Gas-tungsten-arc-welded (GTAW) Al0.5CoCrFeNi high-entropy alloy (HEA) was analyzed using scanning electron microscopy (SEM), microhardness, and tensile testing. The weld metal having refined equiaxed and elongated columnar dendritic microstructure experienced 6.38 pct reduction in strength and marginally reduced hardness compared to the base metal (BM). Lower work hardening with enhanced relative slip distance, which was observed through the Kocks–Mecking plot and slip distance–true strain plots, was attributed to the reduced bcc fraction in the weld.

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The authors acknowledge R. Gururaj, Professor of English and Head, Department of Humanities, NIT Trichy, for thorough language corrections.

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Authors and Affiliations

  1. Advanced Materials Processing Laboratory, Department of Metallurgical and Materials Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu, 620015, India

    R. Sokkalingam, Sourav Mishra, Srinivasa Rakesh Cheethirala, V. Muthupandi & K. Sivaprasad

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  1. R. Sokkalingam
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  2. Sourav Mishra
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  3. Srinivasa Rakesh Cheethirala
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  4. V. Muthupandi
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  5. K. Sivaprasad
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Correspondence to K. Sivaprasad.

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Manuscript submitted January 27, 2017.

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Sokkalingam, R., Mishra, S., Cheethirala, S.R. et al. Enhanced Relative Slip Distance in Gas-Tungsten-Arc-Welded Al0.5CoCrFeNi High-Entropy Alloy. Metall Mater Trans A 48, 3630–3634 (2017). https://doi.org/10.1007/s11661-017-4140-8

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  • DOI: https://doi.org/10.1007/s11661-017-4140-8

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