Extra Strengthening and Work Hardening in Novel Precipitation‐Hardened FeCrNiSi  x   Medium‐Entropy Alloys | Zendy

Bai Tianxiang | Zendy; Zhang Tuanwei | Zendy; Ma Shengguo | Zendy; Zhao Dan | Zendy; Wang Zhihua | Zendy

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Extra Strengthening and Work Hardening in Novel Precipitation‐Hardened FeCrNiSi x Medium‐Entropy Alloys

Author(s) -

Bai Tianxiang,

Zhang Tuanwei,

Ma Shengguo,

Zhao Dan,

Wang Zhihua

Publication year - 2021

Publication title -

advanced engineering materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.938

H-Index - 114

eISSN - 1527-2648

pISSN - 1438-1656

DOI - 10.1002/adem.202001185

Subject(s) - materials science , precipitation hardening , intermetallic , alloy , precipitation , strengthening mechanisms of materials , ductility (earth science) , nanoscopic scale , metallurgy , work hardening , hardening (computing) , high entropy alloys , composite material , nanotechnology , microstructure , creep , physics , layer (electronics) , meteorology

Precipitation strengthening is believed as an important strengthening method that optimizes the strength of alloys. Herein, the possibility of precipitation strengthening is demonstrated by introducing the intermetallic (Cr, Si)‐rich σ phase in the novel FeCrNiSi x MEAs system. It is found that simultaneous enhancement in strength and work hardening can be attained by adding Si element in the FeCrNi MEA. Specifically, the FeCrNiSi 0.2 alloy realizes a good balance of strength and ductility due to the precipitation of ultrafine‐ or even nanoscale‐sized σ phase. Moreover, quantitative analyses are conducted to assess the underlying strengthening mechanisms.

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