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Enhanced ductility in dynamic strain aging regime in a Fe-25Ni-20Cr austenitic stainless steel
Journal article   Peer reviewed

Enhanced ductility in dynamic strain aging regime in a Fe-25Ni-20Cr austenitic stainless steel

Abdullah S. Alomari, N. Kumar and K. L. Murty
Materials science & engineering. A, Structural materials : properties, microstructure and processing, Vol.729(C), pp.157-160
27/06/2018
DOI: https://doi.org/10.1016/j.msea.2018.05.060

Abstract

Materials Science Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Nanoscience & Nanotechnology Science & Technology Science & Technology - Other Topics Technology
Contrary to the commonly observed embrittlement during dynamic strain aging, we report in this note distinct enhancement in ductility in a Nb-containing and nitrogen stabilized Fe-25(wt%)Ni-20Cr austenitic stainless steel (Alloy 709) at temperatures from 623 K to 873 K at 10(-4) s(-1) where serrated flow is noted. This observation is rationalized in terms of the influence of strain hardening parameters and strain rate sensitivity on uniform elongation and ductility respectively.

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