Effect of extrusion ratio and temperature on microstructures and tensile properties of extruded Mg-Gd-Y-Mn-Sc alloy
Effect of extrusion ratio and temperature on microstructures and tensile properties of extruded Mg-Gd-Y-Mn-Sc alloy
复制标题
挤压比和温度对挤压Mg-Gd-Y-Mn-Sc合金显微组织和拉伸性能的影响
DOI:
10.1016/j.msea.2020.140330
复制
发表时间:
2021-01
期刊:
影响因子:
6.4
通讯作者:
Kamado S.
中科院分区:
文献类型:
--
作者:
Yang Z.;Xu C.;Nakata T.;Kamado S.
This study analyzed the effect of extrusion parameters on the microstructural evolution and tensile properties of a Mg-8.0Gd-4.0Y-1.0Mn-0.4Sc (wt.%) alloy. The variation in the dynamic recrystallization (DRX) and dynamic precipitation behavior of the alloy under different extrusion parameters were investigated in detail, and the DRX behavior during hot extrusion and strengthening mechanism were revealed. The primary DRX mechanisms are discontinuous dynamic recrystallization (DDRX), continuous dynamic recrystallization (CDRX). The as-extruded alloy with larger extrusion ratio exhibits smaller dynamic recrystallized (DRXed) grains and a high number of fine precipitated particles. With increasing the extrusion temperature, both the average size and volume fraction of DRXed grain increase, but the fine particle fraction decreases. The alloy extruded at 400 °C and ratio of 20:1 shows the superior strength with tensile yield strength of 352 MPa and ultimate tensile strength of 425 MPa, and the alloy extruded at 450 °C and ratio of 10:1 shows higher elongation to failure of 12%. The enhanced strength is mainly attributed to the combined action of strong basal texture, refined DRXed grains and dense distribution of fine particles, on the other hand, the higher fraction of DRXed grains and lower amount of precipitate particles are beneficial to increase the ductility of the alloy.
登录
查看更多内容
DOI:
10.1016/j.msea.2016.11.009
发表时间:
2017-01-27
影响因子:
6.4
作者:
Jiang, H. S.;Zheng, M. Y.;Luo, J. H.
通讯作者:
Luo, J. H.
影响因子:
6.2
作者:
X. Fang;D. Yi;J. Nie
通讯作者:
X. Fang;D. Yi;J. Nie
DOI:
10.1016/j.msea.2006.11.095
发表时间:
2007-05-15
影响因子:
6.4
作者:
Fatemi-Varzaneh, S. M.;Zarei-Hanzaki, A.;Beladi, H.
通讯作者:
Beladi, H.
影响因子:
4.6
作者:
Jiang MG;Xu C;Yan H;Lu SH;Nakata T;Lao CS;Chen RS;Kamado S;Han EH
通讯作者:
Han EH
DOI:
10.1007/s11661-005-0037-z
发表时间:
2005-07-01
影响因子:
2.8
作者:
Mordike, BL;Stulíková, I;Smola, B
通讯作者:
Smola, B