| Budget Amount *help |
¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Fiscal Year 2016: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2014: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
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| Outline of Final Research Achievements |
Stress-induced martensitic transformation and its reverse transformation are associated with a significant latent heat, which caused temperature change of the specimen. This effect has attracted considerable attention because it can be used as a new refrigeration system. However, the use of typical shape memory alloys as refrigerant material faces two important problems which should be solved. One is hysteresis loss, and the other is deterioration of the refrigerant properties by repetition. In this study, we demonstrated that these problems can be solved by using a weak-first order martensitic transformation in an Fe-Pd alloy. In this alloy we exploit temperature dependence of elastic strain of this alloy to obtain a significant elastocaloric effect instead of using latent heat of first order transformation.
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