TY - JOUR
T1 - A Study of Microstructure Evolution for Mg Alloy Subjecting to Multi-Pass Equal Channel Angular Extrusion
AU - Liu, Yongji
AU - Heng, Zhonghao
AU - He, Yupeng
AU - Dong, Ziming
AU - Jiang, Hailong
AU - Zeng, Zhigang
AU - Shen, Jianghua
N1 - Publisher Copyright:
© 2022, The Indian Institute of Metals - IIM.
PY - 2023/1
Y1 - 2023/1
N2 - Equal channel angular extrusion (ECAE) has been recognized as one of the effective ways for grain refinement. The microstructures after ECAE have been studied for many alloys with relating to mechanical properties. However, the evolution of microstructures and their relationship with the prior conditions are rarely studied. In the present work, the microstructures and tensile behavior of a Mg alloy, AZ31, were investigated after each pass of ECAE. The results revealed an unreported rule that the alloy follows for texture evolution, where the basal texture or namely the focused c-axis orients 45° for each ECAE process, regardless of the prior microstructure. This implies that the texture or grain orientation development under ECAE could be irrelevant with shearing, but have relation to rotation. The tensile behavior of the extruded samples with different passes has been found to fit very well with the microstructure, i.e., the varying yield strengths are highly related with the texture.
AB - Equal channel angular extrusion (ECAE) has been recognized as one of the effective ways for grain refinement. The microstructures after ECAE have been studied for many alloys with relating to mechanical properties. However, the evolution of microstructures and their relationship with the prior conditions are rarely studied. In the present work, the microstructures and tensile behavior of a Mg alloy, AZ31, were investigated after each pass of ECAE. The results revealed an unreported rule that the alloy follows for texture evolution, where the basal texture or namely the focused c-axis orients 45° for each ECAE process, regardless of the prior microstructure. This implies that the texture or grain orientation development under ECAE could be irrelevant with shearing, but have relation to rotation. The tensile behavior of the extruded samples with different passes has been found to fit very well with the microstructure, i.e., the varying yield strengths are highly related with the texture.
KW - ECAE
KW - Mechanical properties
KW - Mg alloy
KW - Microstructure
KW - Texture
UR - http://www.scopus.com/inward/record.url?scp=85141358592&partnerID=8YFLogxK
U2 - 10.1007/s12666-022-02711-5
DO - 10.1007/s12666-022-02711-5
M3 - 文章
AN - SCOPUS:85141358592
SN - 0019-493X
VL - 76
SP - 165
EP - 173
JO - Transactions of the Indian Institute of Metals
JF - Transactions of the Indian Institute of Metals
IS - 1
ER -