Hydrogen-accelerated spontaneous microcracking in high-strength aluminium alloys.

ABSTRACT: Aluminium alloys are re-evaluated as most feasible way to satisfy the industrial needs of light-weight structural materials. However, unlike conventional structural metals such as iron and titanium, aluminium does not have easily accessible secondary phases, which means that aluminium-based alloys cannot be strengthened by harnessing multiple phases. This leaves age hardening as the only feasible strengthening approach. Highly concentrated precipitates generated by age hardening generally play a dominant role in shaping the mechanical properties of aluminium alloys. In such precipitates, it is commonly believed that the coherent interface between the matrix and precipitate does not contribute to crack initiation and embrittlement. Here, we show that this is not the case. We report an unexp

SUBMITTER: Tsuru T 

PROVIDER: S-EPMC7136220 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature