Quantitative estimation of kink-band strengthening in an Mg–Zn–Y single crystal with LPSO nanoplates

Materials Research Letters

Yoshihito Kawamura¹  Michiaki Yamasaki¹  Toko Tokunaga²  Koji Hagihara²  Ryohei Ueyama³  Takayoshi Nakano³ 

[1] Kumamoto University;Nagoya Institute of Technology;Osaka University;

关键词: kink-band strengthening;    magnesium alloys;    plastic deformation;    lpso nanoplate;    dislocation;   

DOI  :  10.1080/21663831.2021.1974593

来源: DOAJ

【 摘 要 】

Kink-band strengthening was first quantitatively evaluated using an Mg–Zn–Y single crystal containing long-period stacking ordered (LPSO) nanoplates. The ability of a kink-band boundary to act as a barrier that hinders the motion of dislocations is high and comparable to that of a general random grain boundary. Nevertheless, a kink-band boundary is regarded as a simple tilt boundary in the dislocation model. One reason for the anomalous ability of kink-band boundary acting as barriers is related to its peculiar hierarchical structure, in which many small kink bands with high crystal rotation angles accumulate in a localized region.

【 授权许可】

Unknown