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Alloy Design and Microstructural Control in Ni-based Multi-Intermetallic In-situ Composite Materials

镍基多元金属间复合材料的合金设计与微观结构控制

基本信息

批准号：
15360373
负责人：
TAKASUGI Takayuki
金额：
$ 9.92万
依托单位：
Osaka Prefecture University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15360373/
关键词：
Intermetallic compound Superalloy Microstructural stability Thermal stability Multi-phase alloy Ni_3Al Geometrically close packed phase Ni_3V Ni_3T Ni_3Ti Ni3Al Ni3Ti Ni3V

项目摘要

Using Ni_3Al-Ni_3Nb-Ni_3Ti, Ni_3Al-Ni_3Ti-Ni_3V, Ni_3Al-Ni_3Nb-Ni_3V and Ni_3Si-Ni_3Nb-Ni_3Ti pseudo-ternary alloy systems, the development of multi-intermetallic in-situ composite materials as a candidate of new high-temperature structural materials was performed on alloy design and microstructure control. The following results were obtained from the present study.(1)It was found dual multi-phase microstructure composed of L1_2 and D0_<22> phases was developed in Ni_3Al-Ni_3Ti-Ni_3V and Ni_3Al-Ni_3Nb-Ni_3V pseudo-ternary alloy systems, and had extremely fine microstructure and highly coherent interface structures not only between the upper- and lower-multi-phase microstructures but also between the constituent phases.(2)In Ni_3Si-Ni_3Nb-Ni_3Ti pseudo-ternary alloy system, the precipitation phenomenon due to the solubility change by temperature between two constituent phases, L1_2 and D0_<24> was found to occur and consequently the precipitation strengthening was applicable to the present alloy system.(3)The Ni_3Al-Ni_3Ti-Ni_3V and Ni_3Al-Ni_3Nb-Ni_3V pseudo-ternary alloys displayed the positive temperature dependence of the flow strength and also extremely high high-temperature strength accompanied with reasonable tensile ductility over a wide range of temperatures. In addition, the creep rate and creep rupture life were identical to or superior to those of the most superalloys or advanced superalloys.(4)For the Ni_3Al-Ni_3Ti-Ni_3V pseudo-ternary alloys, fabrication process such as conventional melting, hot-forging and unidirectional solidification processes were found to be applicable, consequently resulting in the mass production, reliability and low-cost.(5)It was shown that the developed multi-intermetallic in-situ composite materials are strongly promising as new high-temperature structural materials.

本文以Ni_3Al-Ni_3 Nb-Ni_3 Ti、Ni_3Al-Ni_3 Ti-Ni_3V、Ni_3Al-Ni_3 Nb-Ni_3V和Ni_3Si-Ni_3 Nb-Ni_3 Ti伪三元合金体系为研究对象，从合金设计和组织控制两个方面开展了多元金属间化合物自生复合材料的研究。从本研究中获得了以下结果。(1)It结果表明<22>，Ni_3Al-Ni_3 Ti-Ni_3V和Ni_3Al-Ni_3 Nb-Ni_3V伪三元合金系中均存在由L1_2和D0_2相组成的双相多相组织，该组织不仅在上、下多相组织之间，而且在各组成相之间均具有非常细小的组织和高度共格的界面结构。(2)In在Ni_3Si-Ni_3 Nb-Ni_3 Ti伪三元合金系中，由于L1_2和D0_2两个组成相之间的溶解度随温度的变化而发生沉淀析出现象<24>，因此沉淀强化适用于本合金系。（3）Ni_3Al-Ni_3 Ti-Ni_3V和Ni_3Al-Ni_3 Nb-Ni_3V伪三元合金具有良好的流变强度和高温强度，并在较宽的温度范围内具有良好的拉伸塑性。此外，蠕变速率和蠕变断裂寿命与大多数高温合金或先进高温合金相同或上级。（4）对于Ni_3Al-Ni_3 Ti-Ni_3V赝三元合金，采用常规熔炼、热锻和定向凝固等工艺制备，可实现大批量生产，可靠性高，成本低。(5)It结果表明，所开发的多金属间化合物原位复合材料作为新型高温结构材料具有很强的应用前景。

项目成果

期刊论文数量（38）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Development of multi-phase intermetallic alloys composed of Ni_3X-type structures

Ni_3X型多相金属间合金的研制

DOI：
发表时间：
2007
期刊：
Solid state phenomena 127
影响因子：
0
作者：
M. Y. Liao;Y. Koide;J. Alvarez;M. Imura;and J. P. Kleider;T. Takasugi and Y. Kaneno
通讯作者：
T. Takasugi and Y. Kaneno

特許

专利