Thermomechanical behavior of TiNi shape memory alloy fiber reinforced 6061 aluminum matrix composite
Thermomechanical behavior of TiNi shape memory alloy fiber reinforced 6061 aluminum matrix composite
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DOI：
10.1007/s11661-998-1022-0
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
K. Hamada;J. Lee;K. Mizuuchi;M. Taya;K. Inoue
中科院分区：
文献类型：
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作者：
K. Hamada;J. Lee;K. Mizuuchi;M. Taya;K. Inoue
对TiNi形状记忆合金（SMA）纤维增强6061铝基智能复合材料的工艺过程和热机械行为进行了实验研究和理论分析。确定了热压温度和压力的最佳工艺条件。复合材料的屈服应力随TiNi纤维体积分数的增加而增加，随预应变的增加而增加。利用指数型SMA本构模型，建立了复合材料热机械行为的分析模型。该模型预测的复合屈服应力的增加与预应变的增加。研究发现，影响复合材料屈服应力的关键参数是纤维体积分数、预应变和基体热处理。的预测是在一个相当好的协议与实验结果。
The processing and thermomechanical behaviors of TiNi shape memory alloy (SMA) fiber-reinforced 6061 Al matrix smart composites are investigated experimentally and analytically. Optimum processing conditions of hot pressing temperature and pressure are identified. Composite yield stresses are observed to increase with an increase in the volume fraction of TiNi fiber and prestrain given to the composites. An analytical model for thermomechanical behavior of the composites is developed by utilizing an exponential type of SMA constitutive model. The model predicts an increase in the composite yield stress with an increase in prestrain. It is found that the key parameters affecting the composite yield stress are the fiber volume fraction, prestrain, and matrix heat treatment. The predictions are in a reasonably good agreement with the experimental results.