"Microstructures and phase stability of rapidly solidified intermetalic compounds

“快速凝固金属间化合物的微观结构和相稳定性

• 批准号: 01420041
• 负责人: SUZUKI Tomoo
• 金额: $ 7.36万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (A)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01420041/
• 关键词: Intermetallic Compounds; Rapid Solidification; Microstructure; Crystal structure; Non-equilibrium Phases; Phase Stability; 準安定相; 微細組識

The research works which are regarding with rapid solidification of some intermetalic compounds can be summarized as follows ;(1) From the observations for microstructures of rapidly solidified TiAl alloys, informations for phase boundaries among alpha titanium, Ti_3Al and TiAl in the titanium-aluminum binary equilibrium phase diagram which have not been established were estimated.(2) From the results of systematic investigation for the effect of ternary elements on the tendency of metastable phases appearance in rapidly solidified Ni_3Al alloys, it was revealed that additional elements which inhibit the appearance of meta-stable phases have effects of improving the plasticity of Ni_3Al alloys.Although it was not apparent the relationships between these two phenomena, this results would give an effective way of improvement for the lack of plasticity that is considered as a neck for application of interm etallic compounds to structural materials.

本文对几种金属间化合物的快速凝固进行了如下研究：（1）通过对快速凝固TiAl合金显微组织的观察，估算了尚未建立的钛-铝二元平衡相图中α钛、Ti_3Al和TiAl之间的相界信息。(2)本文系统地研究了三元元素对快速凝固Ni_3Al合金中亚稳相出现倾向的影响，结果表明，抑制亚稳相出现的附加元素具有提高Ni_3Al合金塑性的作用，虽然这两者之间的关系不明显，但它们之间的关系是：这一结果将为改善被认为是金属间化合物应用于结构材料的瓶颈的塑性的缺乏提供有效的途径。

项目成果

Kazuhiro Mitsui, Yoshinao Mishima and Tomoo Suzuki: "Heterogeneous Ordering in Superlattice Alloys" Philosophical Magazine B. 62. 395-414 (1990)

Kazuhiro Mitsui、Yoshinao Mishima 和 Tomoo Suzuki：“超晶格合金中的异质有序”哲学杂志 B. 62. 395-414 (1990)

Equo Kobayashi, Seiji Miura, Yoshinao Mishima and Tomoo Suzuki: "Microstructures of Rapidly Solidified Ti-Al (50-60at%Al) Binary Alloys" Proceedings of International Symposium on Intermetallic Compounds -Structure and Mechanical Properties (JIMIS-6). The

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三島良直: "液体超急冷したNi_3Alの微視組識" 熱処理. 30. 1-2 (1990)

三岛义直：“液态超淬火Ni_3Al的显微组织”热处理30. 1-2 (1990)。

Kazuhiro Mitsui, Yoshinao Mishima and Tomoo Suzuki: "Two Stage Ordering and Excess Vacancy in Ordered Alloys" Bulletin of the Japan Institute of Metals. 28. 393-401 (1989)

Kazuhiro Mitsui、Yoshinao Mishima 和 Tomoo Suzuki：“日本金属学会的两阶段有序化和有序合金中的过量空缺”公告。

E.Kobayashi,S.Miura,Y.Mishima ,T.Suzuki: "MICROSTRUCTURE OF RAPIDLY SOLIDIFIED TiーAI(50〜60at%A)BINAKY ALLOYS" Intermetallic COmponnds ーStructure and Mecharical PropertiesーProc Intl Symp Intermetallic Compouns(JIMISー6). 245-249 (1991)

E.Kobayashi，S.Miura，Y.Mishima，T.Suzuki：“快速凝固的 Ti-Al(50〜60at%A)BINAKY ALLOYS 的微观结构”金属间化合物 - 结构和机械性能 - Proc Intl Symp 金属间化合物(JIMIS- 6）。245-249（1991）。