TY - JOUR
T1 - Selective variant growth of precipitates in an as-extruded Mg-Gd-Zn-Mn alloy
AU - Ning, Su
AU - Yujuan, Wu
AU - Zhiyu, Chang
AU - Qingchen, Deng
AU - Liming, Peng
AU - Kun, Yang
AU - Qiang, Chen
N1 - Funding Information:
This work was partially supported by the National Key Research and Development Program of China (No. 2016YFB0701201 ), the National Natural Science Foundation of China (Nos. 51771113 , 51971130 ), the United Fund of National Department of Education and Equipment Development (No. 6141A02033213 ) and the 111 Project (Grant No. B16032). Chen appreciate the support of Japan Society for the Promotion of Science through Grants-in-Aid for JSPS Fellows (No. P19730 ).
Publisher Copyright:
© 2020
PY - 2020/8/1
Y1 - 2020/8/1
N2 - Selective variant growth of precipitates was found in an as-extruded Mg-13.7Gd-1.7Zn-0.5Mn (wt.%) alloy. In the coarse-deformed grains, β' phases and hexagonal clusters mainly precipitate along the [101-0]Mg orientation. While in the fine dynamic recrystallized (DRXed) grains, the β' phases and a few of the hexagonal clusters are relatively uniform distributed along the three < 101-0>Mg directions. This phenomenon is attributed to the coupling of dislocation strain field and residual stress component in the as-extruded alloy. Moreover, dislocations in the deformed grains result in a significant increase in the number density of hexagonal clusters comparing to those in the DRXed grains. This selective variant growth of precipitates is expected to change the deformation behavior and modify the mechanical properties in Mg-RE (rare earth) alloys.
AB - Selective variant growth of precipitates was found in an as-extruded Mg-13.7Gd-1.7Zn-0.5Mn (wt.%) alloy. In the coarse-deformed grains, β' phases and hexagonal clusters mainly precipitate along the [101-0]Mg orientation. While in the fine dynamic recrystallized (DRXed) grains, the β' phases and a few of the hexagonal clusters are relatively uniform distributed along the three < 101-0>Mg directions. This phenomenon is attributed to the coupling of dislocation strain field and residual stress component in the as-extruded alloy. Moreover, dislocations in the deformed grains result in a significant increase in the number density of hexagonal clusters comparing to those in the DRXed grains. This selective variant growth of precipitates is expected to change the deformation behavior and modify the mechanical properties in Mg-RE (rare earth) alloys.
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U2 - 10.1016/j.matlet.2020.127853
DO - 10.1016/j.matlet.2020.127853
M3 - Article
AN - SCOPUS:85083504463
SN - 0167-577X
VL - 272
JO - Materials Letters
JF - Materials Letters
M1 - 127853
ER -