ссылка на текст оригинала / link to the original text Metallic glasses rejuvenated to harden under strain Metallic glasses are much stronger than conventional metals, but form certain instabilities under stress that lead to fracture. A process known as rejuvenation has been shown to solve this problem. Metallic glasses are formed by cooling melted alloys under conditions that prevent the melt from crystallizing 1 . They have remarkable mechanical properties — in particular, they can be subjected to high forces and undergo a large amount of deformation before they stop behaving elastically and start to deform permanently (plastically). However, they have one key weakness: they are prone to catastrophic failure under stress because they soften during plastic deformation, rather than hardening, as crystalline metals do. Writing in Nature , Pan et al . 2 report a method for preparing metallic glasses that causes them to harden during plastic deformation, thereby ...
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