Enhancing Mechanical Properties of a Medium-Entropy Alloy by Regulating Mo Addition

Conference · Sun Mar 03 04:00:00 EST 2024

OSTI ID:2328149

Hung, Chang-Yu ^[1]; Li, Chennyang ^[2]; Detrois, Martin ^[3]; Jablonski, Paul ^[3]; Chen, Wei ^[2]; Antonov, Stoichko ^[3]

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1. NETL Site Support Contractor, National Energy Technology Laboratory
2. University at Buffalo
3. NETL

Some multi-principal element alloys (MPEAs), including equiatomic, single-phase CrCoNi and CrCoFeMnNi are now widely recognized for their remarkable combinations of pronounced hardening rates, high ductility, and exceptional fracture toughness at room and cryogenic temperatures. To push the limit of hardenability of the medium-entropy alloy, the strategies associated with local lattice distortion or stacking fault energy (SFE) reduction that promote complex heterogeneity and defect dynamics require further investigation. The purposes of this study are to (1) further enhance the mechanical properties of a typical medium-entropy NiCoCr with alloying Mo, and (2) understand the strengthening mechanism of a Mo-added medium-entropy alloys.

• Research Organization: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
• Sponsoring Organization: USDOE Office of Fossil Energy (FE)
• OSTI ID: 2328149
• Country of Publication: United States
• Language: English