Formation of core-shell nanoprecipitates and their effects on work hardening in an ultrahigh-strength stainless steel

International Journal of Plasticity, Год журнала: 2024, Номер unknown, С. 104184 - 104184

Опубликована: Ноя. 1, 2024

Язык: Английский

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Impact of gradient microstructure on strain hardening via activation of multiple deformation mechanisms in CoCrNi medium entropy alloy

Materials Futures, Год журнала: 2024, Номер 3(4), С. 041002 - 041002

Опубликована: Окт. 28, 2024

Abstract Face centered cubic (FCC) structural medium/high entropy alloys (MEAs), characterized by excellent strength and ductility, have attracted significant attention the research community. The incorporation of gradient structures (GSs) further can enhance their mechanical properties. In present research, we employ rotation acceleration shot peening technique to introduce a GS within CoCrNi FCC MEA investigate underlying mechanisms governing physical deformation processes during generation GSs through processing, which primary goal is mitigating intrinsic trade-off between ductility. Through microstructures analysis along depth direction, both pre post uniaxial tensile plastic deformation, unveiled that low stacking fault (SF) energy characteristic triggered emergence diverse defects in core region. presence nanoscale twins, SFs, Lomer–Cottrell dislocation locks phase transformation from hexagonal close-packed at twin boundaries synergistically enhanced strain hardening capacity material.

Язык: Английский

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Enhanced ductility via high-density nanoprecipitates driven by chemical supersaturation in a flash-heated precipitation-strengthened high-entropy alloy

Acta Materialia, Год журнала: 2024, Номер 281, С. 120434 - 120434

Опубликована: Сен. 30, 2024

Язык: Английский

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Improving the dynamic mechanical properties of high-carbon and high-manganese steel via laser wire additive manufacturing

Scientia Sinica Technologica, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Язык: Английский

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