2025年1月20日，课题组青秀教师苟峻铭博士带领博士生刘国鑫同学等完成的论文“A high-entropy alloy showing gigapascal superelastic stress and nearly temperature-independent modulus”被Nature Communications 录用！该论文通过调控多尺度微纳结构解决了超弹合金“高超弹应力和大超弹应变不兼容”的问题，在宽温域实现了1GPa以上的超弹应力和~3%的超弹应变；同时克服了金属材料弹性模量随温度降低而增大的原理性瓶颈，获得了宽温域恒弹模量。祝贺他们！

Abstract：

High-performance superelastic materials with a combination of high superelastic stress, large elastic recovery strain, and stable elastic modulus over a wide temperature range are highly desired for a variety of technological applications. Unfortunately, it is difficult to achieve these multi-functionalities simultaneously because most superelastic materials have to encounter the modulus softening effect and the limited superelastic stress, whereas most Elinvar-type materials show small elastic strain limit. Here, we report a (TiZrHf)44Ni25Cu15Co10Nb6 high-entropy alloy that meets all these requirements. This alloy also shows good cyclic stability, thermally-stable capacity for elastic energy storage, high micro-hardness and good corrosion resistance, allowing it to operate stably in hostile environments. We show that its multi-functionalities stem from a natural composite microstructure, containing a highly-distorted matrix phase with strain glass transition and various structural and compositional heterogeneities from micro- to nano-scale. Our findings may provide insight into designing high-entropy alloys with unconventional and technologically-important functional properties.