Strain glasses (STGs) exhibit many unique properties not available in their counterparts of martensites and have found applications in cutting-edge space technology. However, the strain glass transition temperature is commonly too low to enrich applications, especially in prototypical TiNi-based shape-memory alloys (SMAs). Here we report a surprising finding of strain glass in TiNi alloys with high ∼290 K, which is the highest among existing TiNi STGs. It was achieved via a simple method of slight annealing at 573 K for 15 s on cold-rolled high (martensitic transformation temperature) TiNi SMAs. As a result, this near-equiatomic TiNi strain glass caused by cold-rolling-induced dislocations can inherit the high- of TiNi SMA and possess high , manifested by a weak transition temperature decrease with cold-rolling reduction rate in the phase diagram.

中文翻译：

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高温近等原子TiNi应变玻璃

应变玻璃 (STG) 表现出许多马氏体玻璃所不具备的独特性能，并已在尖端空间技术中得到应用。然而，应变玻璃化转变温度通常太低，无法丰富应用，特别是在原型 TiNi 基形状记忆合金 (SMA) 中。在此，我们报告了在高~290 K 的 TiNi 合金中应变玻璃的惊人发现，这是现有 TiNi STG 中最高的。这是通过对冷轧高（马氏体转变温度）TiNi SMA 进行 573 K 轻微退火 15 秒的简单方法实现的。因此，这种由冷轧引起位错引起的近等原子 TiNi 应变玻璃可以继承 TiNi SMA 的高特性，并具有高 ，表现为相图中随冷轧压下率的微弱转变温度下降。