Giant elastic response and ultra-stable elastocaloric effect in tweed textured Fe-Pd single crystals
Giant elastic response and ultra-stable elastocaloric effect in tweed textured Fe-Pd single crystals
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花呢织构Fe-Pd单晶的巨大弹性响应和超稳定弹热效应
DOI：
10.1016/j.actamat.2021.117486
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发表时间：
2021-11
期刊：
影响因子：
9.4
通讯作者：
Planes Antoni
中科院分区：
文献类型：
--
作者：
Xiao Fei;Bucsek Ashley;Jin Xuejun;Porta Marcel;Planes Antoni
The limit of elastic deformation in conventional metals and alloys is usually within 0.1%. When deformed further, these materials show plastic deformation effects, which are a consequence of dislocation movements. Here, we report that a much larger elastic-like strain of more than 4% can be achieved in a tweed textured Fe-Pd single crystal under a compressive stress of 300 MPa. We show that this giant elastic response gives rise to significant and homogenous elastocaloric effect (∼4.1 K) that can sustain 106or even more mechanical cycles without degradation. The large and stable elastic-like strain in Fe-Pd originates from the continuous and reversible structural change associated with the tweed texture under stress as confirmed by thein-situhigh energy X-ray diffraction tests. Phase field simulation also confirms this giant elastic response and ultra-stable elastocaloric effect under a compressive stress in the Fe-Pd alloy.
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DOI：
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发表时间：
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期刊：
Physical review. B, Condensed matter
影响因子：
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DOI：
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发表时间：
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期刊：
Physical review. B, Condensed matter
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