Understanding for controlling microstructure formation related to two-phase separation based on the same frame of ordered structures

基于有序结构同一框架控制与两相分离相关的微观结构形成的理解

• 批准号: 23656453
• 负责人: KIMURA Yoshisato
• 金额: $ 2.41万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23656453/
• 关键词: 結晶; 組織制御; 規則構造; 相分離; 単結晶; 固溶強化; 転位; 結晶; 組織制御; 規則構造; 相分離; 単結晶; 固溶強化; 転位

Intermetallic compounds which have ordered crystal structures are used for applications such as strengthening phases of heat resistant alloys for jet engines and gas turbines, and thermoelectric materials which can directly convert the waste heat into electrical power. We focused on two pairs of intermetallic compounds which have falsely similar ordered structures and are separated as two different phases. Morphology of microstructure of Half-Heusler type TiNiSn, an excellent thermoelectric material, was analyzed especially focusing on interfaces formed by phase separation between Half-Heusler and Heusler pahse. Effects of resemblance and difference in ordered structures between L12 and E21 types on mechanical properties were examined for Ni3 Al with solute carbon atoms.

使用有序晶体结构的金属间化合物用于应用，例如增强喷气发动机和燃气轮机耐热合金的阶段，以及可以将废热直接转化为电力的热电材料。我们专注于两对金属间化合物，它们具有错误的有序结构，并分为两个不同的阶段。分析了一种出色的热电材料的一半型蒂尼斯（Tinisn）的微观结构的形态，特别关注由半手和赫斯勒·帕斯（Heusler Pahse）之间的相分离形成的界面。使用溶质碳原子检查了L12和E21类型之间有序结构对机械性能的有序结构的差异的影响。