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

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:729

Article

Alomari, Abdullah S.^1,2  Kumar, N.¹  Murty, K. L.¹ 

[1] North Carolina State Univ, Dept Nucl Engn, Raleigh, NC 27695 USA

[2] King Abdulaziz City Sci & Technol, Atom Energy Res Inst, Riyadh, Saudi Arabia

关键词: Ductility;    Austenitic steels;    Dynamic strain aging;    High temperature deformation;   

DOI  :  10.1016/j.msea.2018.05.060

来源: Elsevier

【 摘 要 】

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.

【 授权许可】

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