Nanoindentation behavior of high entropy alloys with transformation-induced plasticity
作者： S. Sinha , R. A. Mirshams , T. Wang , S. S. Nene , M. Frank
DOI: 10.1038/S41598-019-43174-X
关键词:
摘要: Nanoindentation of three metastable dual-phase high entropy alloys (HEAs) was performed to obtain their inherent elastoplastic deformation responses. Excellent combination hardness and elastic modulus in as-cast condition confirmed that, inherently higher strength compared other HEAs reported literature, can be attributed alloy chemistry induced phase stability. Further, 8.28 GPa combined with 221.8 GPa obtained Fe-Mn-Co-Cr-Si-Cu HEA by annealing the material, which is best hardness-modulus date from nanoindentation. On hand, although Fe-Mn-Co-Cr-Si showed lower than Fe-Mn-Co-Cr-Si-Al HEAs, former exhibited highest strain rate sensitivity, as determined tests at five different rates. The also had subtle differences incipient plasticity behavior, while retaining similar levels hardness; nanoindentation response microstructural dependence friction stir processed, annealed tensile-deformed specimens. Thus, study highlighted that achieved designing a class composition, any individual tuned enhanced properties.
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