Microstructure and Mechanical Properties of Low-Activation Fe-Cr-V Multicomponent Single-Phase Alloys

Microstructure and Mechanical Properties of Low-Activation Fe-Cr-V Multicomponent Single-Phase... JMEPEG ASM International https://doi.org/10.1007/s11665-018-3436-1 1059-9495/$19.00 Microstructure and Mechanical Properties of Low- Activation Fe-Cr-V Multicomponent Single-Phase Alloys Zhiping Sun and Huachun Cui (Submitted September 19, 2017; in revised form March 13, 2018) A ternary equiatomic and nearly equiatomic alloy composed of the low-activation elements Fe, Cr, and V was designed for potential application as low-activation structural materials for the first wall of fusion reactors. The optimal composition of the multicomponent alloy was determined by minimizing the Gibbs free energy for solid-solution formation. The microstructure, phase stability, and mechanical properties of the equiatomic and optimized Fe-Cr-V alloys were studied. The equiatomic alloy consisted of a body- centered-cubic (BCC) solid-solution phase with a small amount of a face-centered-cubic (FCC) solid- solution phase, whereas the optimized alloy consisted of a single BCC solid-solution phase in the as-cast state. The crystal grains of both alloys were equiaxial. No phase transition was observed in the optimized alloy after homogenization; however, for the equiatomic alloy, the FCC solid-solution phase disappeared and surface relief was observed. The Vickers microhardness and yield strength of the Fe-Cr-V alloys increased after homogenization compared with those of the as-cast alloys. generation nuclear reactors and other applications that require Keywords Gibbs free http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Materials Engineering and Performance Springer Journals

Microstructure and Mechanical Properties of Low-Activation Fe-Cr-V Multicomponent Single-Phase Alloys

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Publisher
Springer US
Copyright
Copyright © 2018 by ASM International
Subject
Materials Science; Characterization and Evaluation of Materials; Tribology, Corrosion and Coatings; Quality Control, Reliability, Safety and Risk; Engineering Design
ISSN
1059-9495
eISSN
1544-1024
D.O.I.
10.1007/s11665-018-3436-1
Publisher site
See Article on Publisher Site

Abstract

JMEPEG ASM International https://doi.org/10.1007/s11665-018-3436-1 1059-9495/$19.00 Microstructure and Mechanical Properties of Low- Activation Fe-Cr-V Multicomponent Single-Phase Alloys Zhiping Sun and Huachun Cui (Submitted September 19, 2017; in revised form March 13, 2018) A ternary equiatomic and nearly equiatomic alloy composed of the low-activation elements Fe, Cr, and V was designed for potential application as low-activation structural materials for the first wall of fusion reactors. The optimal composition of the multicomponent alloy was determined by minimizing the Gibbs free energy for solid-solution formation. The microstructure, phase stability, and mechanical properties of the equiatomic and optimized Fe-Cr-V alloys were studied. The equiatomic alloy consisted of a body- centered-cubic (BCC) solid-solution phase with a small amount of a face-centered-cubic (FCC) solid- solution phase, whereas the optimized alloy consisted of a single BCC solid-solution phase in the as-cast state. The crystal grains of both alloys were equiaxial. No phase transition was observed in the optimized alloy after homogenization; however, for the equiatomic alloy, the FCC solid-solution phase disappeared and surface relief was observed. The Vickers microhardness and yield strength of the Fe-Cr-V alloys increased after homogenization compared with those of the as-cast alloys. generation nuclear reactors and other applications that require Keywords Gibbs free

Journal

Journal of Materials Engineering and PerformanceSpringer Journals

Published: May 31, 2018

References

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