• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Nuclear Materials: Materials Aspects of Fission and Fusion >Microstructure and mechanical properties of low activation Fe-Ti-Cr-V-W multi-principal element alloys
【24h】

Microstructure and mechanical properties of low activation Fe-Ti-Cr-V-W multi-principal element alloys

机译：低活化Fe-Ti-Cr-V-W多主元元合金的组织和力学性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Single-phase multi-principal element alloys can have low activation and rapid induced radioactive decay properties that make them ideal structural materials for the first wall/cladding structure of nuclear fusion reactors. The present work proposes the design of multi-principal element alloys consisting of low activation elements Fe, Ti, Cr, V, and W with both equiatomic and optimized compositions. The optimal composition of the multiple components is based on the formation of a single-phase solid solution with a minimal Gibbs free energy. The microstructures and mechanical properties of the alloys are investigated. The equiatomic alloy is observed to be composed of dendritic crystals consisting of a body-centered cubic (bcc) solid solution phase and a complex intermetallic compound, while the optimized alloy is composed of cellular dendritic crystals consisting of a single bcc solid solution phase in its as-cast state. Homogenization treatment is observed to reduce the fracture strength of the equiatomic alloy due to grain coarsening, although it has little effect on the hardness and other mechanical properties. However, homogenization increased the hardness and compressive yield strength of the optimized alloy to different degrees. The optimized alloy has better plastic toughness than the equiatomic alloy, which increases its workability and radiation resistance. (c) 2020 Elsevier B.V. All rights reserved.
机译：单相多主元素合金可具有低激活和快速诱导的放射性衰减特性，使其成为核聚变反应器的第一壁/包层结构的理想结构材料。本作者提出了由低活化元素Fe，Ti，Cr，V和W的多主元素合金的设计，包括赤脂和优化的组合物。多种组分的最佳组成基于形成单相固溶的形成，其自由能量最小。研究了合金的微观结构和力学性能。观察到赤霉合金由树枝状晶体组成，该树枝状晶体由体为中心的立方（BCC）固溶体相和复杂的金属间化合物组成，而优化的合金由其中的单个BCC固溶体相组成的细胞树突状晶体构成铸造状态。观察到均质化处理以降低由于晶粒粗化引起的赤脂合金的断裂强度，尽管它对硬度和其他机械性能几乎没有影响。然而，均质化增加了优化合金的硬度和压缩屈服强度与不同程度的均匀性。优化的合金具有比赤脂合金更好的塑性韧性，这增加了其可加工性和抗辐射抗性。 （c）2020 Elsevier B.v.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号