面向等离子体W材料改善韧性的方法与机制
作者简介 吴玉程,男,1962年生,教授
收稿日期: 2018-08-31
网络出版日期: 2018-12-05
基金资助
资助项目 国家重大基础研究磁约束核聚变项目No.2014GB121001B,国家自然科学基金项目Nos.51474083、51574101、51674095和51675154,高等学校学科创新引智计划项目No.B18018
The Routes and Mechanism of Plasma Facing Tungsten Materials to Improve Ductility
Received date: 2018-08-31
Online published: 2018-12-05
Supported by
Supported by Magnetic Confinement Fusion Program of National Key Basic Research Program of China (No.2014-GB121001B), National Natural Science Foundation of China (Nos.51474083, 51574101, 51674095 and 51675154) and Program of Introducing Talents of Discipline to Universities of China (No.B18018)
吴玉程 . 面向等离子体W材料改善韧性的方法与机制[J]. 金属学报, 2019 , 55(2) : 171 -180 . DOI: 10.11900/0412.1961.2018.00404
As a candidate for plasma facing material (PFM) in nuclear fusion situation, polycrystalline W with a characteristic of bad low temperature ductility shows brittle behaviour at room temperature and possesses a high ductile-to-brittle transition temperature, which limits its engineering application. In this paper, several common methods of grain refinement, addition of alloying elements, second-phase particles and tungsten fibre, and deformation processing for improving ductility of W are illustrated. To in-depth comprehend of how to improving W toughening, these toughening methods are discussed from intrinsic or extrinsic toughening mechanisms. Furthermore, the research status and development prospects for improving ductility of W materials have been presented.
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