Severe plastic deformation assisted carbide precipitation in Fe-21Cr-5Al alloy

被引：6
作者：
Arivu, Maalavan [1 ]
Hoffman, Andrew [2 ]
Duan, Jiaqi [1 ]
Wen, Haiming [1 ,2 ]
Islamgaliev, Rinat [3 ]
Valiev, Ruslan [3 ]
机构：
[1] Missouri Univ Sci & Technol, Dept Mat Sci & Engn, Rolla, MO 65409 USA
[2] Missouri Univ Sci & Technol, Dept Min & Nucl Engn, Rolla, MO 65409 USA
[3] Ufa State Aviat Tech Univ, Inst Phys Adv Mat, Ufa 450008, Russia
来源：
MATERIALS LETTERS | 2019年 / 253卷
关键词：
Microstructure; Nanocrystalline materials; Grain boundaries; Segregation; Electron microscopy; Nuclear materials; SEGREGATION;
D O I：
10.1016/j.matlet.2019.05.139
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
FeCrAl alloys are promising materials for fuel cladding in light water reactors due to their high-temperature oxidation resistance in a steam environment. In this study, microstructural analysis revealed that Cr-C precipitation is enhanced in a severely plastically deformed (SPD) Fe-21Cr-5Al alloy [Kanthal-D (KD)], as compared to that in a coarse grained (CG) specimen. SPD was performed using equal-channel angular pressing (ECAP) and high-pressure torsion (HPT). The enhanced precipitation is attributed to an increase in the volume fraction of grain boundaries (GB) and to enhanced diffusion owing to increased point defects during ECAP and HPT. (C) 2019 Elsevier B.V. All rights reserved.
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收藏
页码：78 / 81
页数：4
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