Development of A New Type of Functional NiAl-base Alloys

新型功能镍铝基合金的研制

基本信息

批准号：
06555198
负责人：
ISHIDA Kiyohito
金额：
$ 11.14万
依托单位：
TOHOKU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1996
项目状态：
已结题

项目摘要

The beta phase of nickel and cobalt aluminides with B2-type (C_sC1) structure have the potential to serve as a new type of materials with multi-functional properties such as high temperature strength, good oxidation resistance, shape memory, high damping capacity, stc. However the lack of ductility limits their application as the functional materials. The aim of this project is to develop a new type of beta base multi-functional materials improved ductility by microstructural control.1.Thermodynamic AnalysisThe phase equilibria of the Ni-rich portion in the Ni-Al-Mn, Ni-Al-Co and Ni-Al-Fe systems have been experimentally determined, and thermodynamic analysis on basis of the experimental data have been done.2.High Temperature MaterialsBy means of microstructural control due to the information of the thermodynamic analysis, ductile gamma'(L1_2)+beta two-phase alloy which has both excellent oxidation resistance and high temperature strength has been developed by the conventional fabrication method combined with a thermomechanical heat treatment.3.Shape Memory and Damping MaterialsMartensitic transformation temperatures in the beta phase B2*L1_0 (Ms) of the Ni-Al-X (X : Ti, V,Cr, Mn, Fe, Co, Cu, etc.) systems were determined by DSC.It was clarified that adding Mn, Fe and Co are useful to increase the Ms temperature. By means of these data of Ms and phase equilibria, ductile gamma(Al)+beta two-phase shape memory alloys which operate at high temperatures between 100 and 600ﾟC have been developed in the Ni-Al-Fe-Mn quaternary system. These two-phase shape memory alloys show not only high damping capacity, but also higher yield strength than the other damping materials.

具有B2型（C_SC1）结构的镍和钴铝制的β期有可能用作具有多功能特性的新型材料，例如高温强度，良好的氧化耐药性，形状记忆力，高阻尼能力，STC。但是，缺乏延展性限制了它们作为功能材料的应用。该项目的目的是开发一种新型的β基础多功能材料，通过微观结构控制改善了延展性。1。尿动力学分析Ni-Al-Mn，Ni-Al-CO和Ni-Al-FE系统中Ni-Al-MICH部分的相等相等的相等，实验性地确定了练习材料的循环分析。热力学分析，延性γ'（L1_2）+β双相合金具有出色的氧化能力和高温强度，已通过常规制造方法与热机械热处理结合。 CO，CU等由DSC确定系统。是否澄清，添加Mn，Fe和CO对于升高MS温度很有用。通过这些数据和相等相等的数据，在Ni-Al-Fe-MN四级系统中已经开发了在高温至100至600 c的高温下运行的延性伽马（AL）+β双相形状的记忆合金。这些两相形状的记忆合金不仅显示出高阻尼能力，而且比其他阻尼材料更高的屈服强度。