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< c+a > Dislocations Shearing (0001) α Plate Precipitates in an Mg-Zn-Mn Alloy
17 Pages Posted: 22 May 2019 Publication Status: Accepted
Abstract
Precipitation hardening is an effective way to strengthen Mg alloys as precipitates can reduce the mobility of dislocations. Previous investigations suggest that pyramidal < c+a > dislocations can only bypass precipitates. Here we provide solid atomic resolution evidence that < c+a > dislocations can shear through plate precipitates, leaving behind shear trace lines. The possible shearing process was analyzed based on crystallographic orientation relationship between precipitates and the Mg matrix.
Keywords: Mg alloy, Precipitation, Shear,
Suggested Citation: Suggested Citation
Jiang, Jimiao and Ni, Song and Yan, Hongge and Yan, Nie and Song, Min, < c+a > Dislocations Shearing (0001)
α Plate Precipitates in an Mg-Zn-Mn Alloy (May 17, 2019). Available at SSRN: https://ssrn.com/abstract=3389533 or http://dx.doi.org/10.2139/ssrn.3389533
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