Dendrite structure-induced tunable plastic deformation behavior in (Ti-V-Cr)100-xWx refractory high entropy alloys

Li, C.; Chen, S.H.; Tang, Huohong; Zhang, Juchen; Liu, J.Q.; Wu, Yucheng

doi:10.1016/j.ijrmhm.2023.106329

International Journal of Refractory Metals and Hard Materials

2023

DOI: 10.1016/j.ijrmhm.2023.106329

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Dendrite structure-induced tunable plastic deformation behavior in (Ti-V-Cr)100-xWx refractory high entropy alloys

C. Li

S.H. Chen

Huohong Tang

et al.

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Cited by 13 publications

References 56 publications

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Enhancing Phase Stability in Low-Activation TiVTa-Based Alloys Through CALPHAD-Guided Design

Lu,

Zhang,

Tang

et al. 2024

JOM

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Refractory multi-principal element alloys (MPEAs) hold promise for next-generation plasma-facing materials, but their susceptibility to phase instability at intermediate temperatures (500–800°C) hinders their long-term use as structural nuclear materials. This study employed a CALPHAD (CALculation of PHAse Diagrams) approach to rationally design several novel non-equimolar TiVTa and Cr-doped TiVTa alloys with enhanced phase stability and discovered the phase stability of which at different temperatures. Differential scanning calorimetry (DSC) and x-ray diffraction (XRD) results confirmed the exceptional phase stability of Ti33V33Ta34, Ti29V28Ta43, Ti34V30Ta36 and Cr-doped TiVTa alloys, which retained a single BCC phase after heat treatment at 500°C and 700°C for 24 h. However, increasing Cr additions led to the precipitation of a Laves phase along grain boundaries within the vicinity of Ti-rich HCP phase region. This study demonstrates the power of integrating CALPHAD predictions with further experimental validation to accelerate the development of low-activation, high-temperature stable MPEAs for demanding applications.

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Enhancing Phase Stability in Low-Activation TiVTa-Based Alloys Through CALPHAD-Guided Design

Lu,

Zhang,

Tang

et al. 2024

JOM

View full text Add to dashboard Cite

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Controllable sinking electrical discharge machining performance of dendritic-structured W-containing refractory high-entropy alloys

Li,

Chen,

Yue

et al. 2024

Tungsten

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A critical review of the refractory high-entropy materials: RHEA alloys, composites, ceramics, additively manufactured RHEA alloys

Guler,

Yakin,

Guler

et al. 2025

Current Applied Physics

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Dendrite structure-induced tunable plastic deformation behavior in (Ti-V-Cr)100-xWx refractory high entropy alloys

Cited by 13 publications

References 56 publications

Enhancing Phase Stability in Low-Activation TiVTa-Based Alloys Through CALPHAD-Guided Design

Enhancing Phase Stability in Low-Activation TiVTa-Based Alloys Through CALPHAD-Guided Design

Controllable sinking electrical discharge machining performance of dendritic-structured W-containing refractory high-entropy alloys

A critical review of the refractory high-entropy materials: RHEA alloys, composites, ceramics, additively manufactured RHEA alloys

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