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Heat treatment-mediated reversible switching of microstructure and functional properties in a Cu–Al–Mn–Fe shape memory single crystal
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DOI:10.1016/j.intermet.2026.109402.png)
Abstract
En 中文
• A novel heat treatment-mediated strategy is proposed to achieve fully reversible switching of microstructure and functional properties in Cu–Al–Mn–Fe shape memory single crystal. • High-temperature annealing realizes full crystallographic reversibility in Cu-based SMAs: it completely restores the initial L21 parent single crystal from both aging-induced martensitic single crystal and thermal cycling-induced martensitic polycrystal. • The aged martensitic single crystal exhibits a shape recovery strain of 6.1% with a 94% recovery rate, a performance level comparable to commercial shape memory alloys.
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