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Evaluation of Thermo-Mechanical Cyclic Properties of Shape Memory Alloy Aiming to Electric Generation System with Mass and Low Temperature Heat Source.

针对大体积低温热源发电系统的形状记忆合金热机械循环性能评价。

基本信息

批准号：
09650090
负责人：
OCHI Yasuo
金额：
$ 2.11万
依托单位：
University of Electro-Communications
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

项目摘要

The basical study of the evaluation of thermo-mechnaical cyclic properties of shape memory alloy (SMA) were performed in order to investigate a possibility to apply of SMA as the energy conversion elements for the electric generation system. The SMA's used in this study were TiNiCu group alloy which had superior properties in the alloy stability, the corrosion resistance, the transformaton temperature and the fatigue property arid four kinds of alloys with Cu contents of 0-13 at.% . The results obtained were summarized as the followings.1. The martensitic transformation temperature Ms increased with increasing of the Cu contents, and the inversed transformation temperature As decreased with the Cu contents and saturated at the high strain range.2. The effective strain energy-W^<av> by strain cycling increased with the Cu contents in the range of the maximum strain epsilon_<max>*3%, and saturated to constant in the high strain range.3. The dispersion strain energy which were determined as the decrease in the recovery strain energy per 1 cycle, decreased with the Cu contents. The recovery strain enrgy was determined as the area of cyclic stress - strain hysteresis loop.4. The relationship between the recovery strain energy and the fatigue life was a straight line in log -log diagram in the range of epsilon_<max>*3% in spite of the defference of shape memory heat treatment temperature.5. The relationship between the dispersion strain energy and the fatigue life was evaluated as a straight line in log - log diagram in the experimental conditions of the maximum strain and the heat treatment temperature in this study.6. The fatigue life in the condition of the super elasticity cycles showed low life in the range of the Cu contents of 5-10%. On the other hand, the fatigue life in the condition of the thermo-mechnaical cucles decreased with the Cu contents.

为了探讨形状记忆合金（SMA）作为发电系统能量转换元件的可能性，对形状记忆合金（SMA）的热机械循环性能评价进行了基础研究。本研究所用的形状记忆合金是在合金稳定性、耐腐蚀性、相变温度和疲劳性能方面具有上级性能的TiNiCu系合金和Cu含量为0-13 at.%的四种合金.所获得的结果总结如下.马氏体相变温度Ms随Cu含量的增加而升高，逆相变温度As随Cu含量的增加而降低，并在高应变区达到饱和.应变循环的有效应变能-W ^<av>在最大应变量为0.3%范围内随Cu含量的增加而增加<max>，在高应变范围内趋于饱和.被确定为每1个循环的恢复应变能的减少的分散应变能，随着Cu含量而减少。用循环应力-应变滞回线的面积作为恢复应变能.形状记忆热处理温度不同，回复应变能与疲劳寿命在双对数图上均为直线关系，且回复应变能与疲劳寿命的关系在100%~<max>*3%范围内均为直线关系.在最大应变和热处理温度的实验条件下，弥散应变能与疲劳寿命在双对数图上呈直线关系.超弹性循环条件下的疲劳寿命在Cu含量为5- 10%的范围内表现出较低的寿命。另一方面，在热机械循环条件下的疲劳寿命随着Cu含量的增加而降低。

项目成果

期刊论文数量（0）

专著数量（0）

科研奖励数量（0）

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T.Sakuma,U.Iwata,N.Kariya,Y.Ochi: "Fatigue Life of TiNiCu shape Memory alloy under Thermo-mechanical Corditions" Proc.of the 11th Inter Conf.on Expermental Mechanics. (2). 1121-1126 (1998)

T.Sakuma、U.Iwata、N.Kariya、Y.Ochi：“热机械条件下 TiNiCu 形状记忆合金的疲劳寿命”第 11 届国际实验力学会议论文集。

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佐久間俊雄,岩田宇一,荒井正行,田場淳,越智保雄: "TiNiCu形状記憶合金の繰返し変形特性(加熱温度の影響)" 日本機械学会材料力学部門講演会講演論文集. No.96-10・Vol.B. 355-356 (1996)

Toshio Sakuma、Uichi Iwata、Masayuki Arai、Jun Taba、Yasuo Ochi：“TiNiCu 形状记忆合金的重复变形特性（加热温度的影响）”日本机械工程学会材料力学分会论文集第 96-10 号。 B卷355-356（1996）

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0
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佐久間俊雄, 岩田宇一, 仮屋房亮, 越智保雄, 水越光司, 宮崎修一: "TiNiCu形状記憶合金の変態温度に及ぼすCu添加量および熱処理温度の影響" 日本機械学会第75期通常総会講演会講演論文集. No.98-1,(II). 229-230 (1998)

Toshio Sakuma、Uichi Iwata、Ryo Kariyafusa、Yasuo Ochi、Koji Mizukoshi、Shuichi Miyazaki：“Cu 添加量和热处理温度对 TiNiCu 形状记忆合金转变温度的影响”在日本机械学会第 75 届常务大会上的演讲工程师论文集第 98-1,(II) 229-230 (1998)。