Grain refinement and orientation of AZ31B magnesium alloy in hot flow forming under different thickness reductions
Grain refinement and orientation of AZ31B magnesium alloy in hot flow forming under different thickness reductions
复制标题
不同厚度减少量下AZ31B镁合金热旋压晶粒细化及取向
DOI：
10.1016/j.jmst.2017.12.007
复制
发表时间：
2017-12
影响因子：
10.9
通讯作者：
Ding Wenjiang
中科院分区：
文献类型：
--
作者：
Zhang Yalian;Wang Fenghua;Dong Jie;Jin Li;Liu Conghui;Ding Wenjiang
An analysis of the hot flow forming of Mg-3.0Al-1.0Zn-0.3Mn (AZ31B) alloy was conducted by experiments and numerical simulations. The effects of different thickness reductions on the microstructure and mechanical properties were investigated at a temperature of 693 K, a spindle speed of 800 rev/min and a feed ratio of 0.1 mm/rev. Thickness reductions have great influence on the uniformity of microstructure along the radial direction (RD) and the grain sizes become refined and uniform when the thickness reduction reaches 45%. Thec-axes of most grains are approximately parallel to the RD, with a slight inclination towards the axial direction (AD). The best mechanical properties with UTS of 280 MPa and YS of 175 MPa near the outer surface while 266 MPa and 153 MPa near the inner surface have been achieved due to grain refinement and texture. Moreover, the material flow behavior and stress/strain distributions for single-pass reductions were studied using the ABAQUS/Explicit software. The calculated results indicate that the materials mainly suffer from triaxial compressive stresses and undergo compressive plastic strain in RD and tensile strains in other directions. The higher stress and strain rate near the outer surface lead to more refined grains than that of other regions along the RD, whereas the orientation of the maximum principal compressive stress leads to a discrepancy of the grain orientations in RD.
登录
查看更多内容
DOI：
10.2464/jilm.52.318
发表时间：
2002
期刊：
Journal of Japan Institute of Light Metals
影响因子：
--
作者：
Xuyue Yang;H. Miura;T. Sakai
通讯作者：
Xuyue Yang;H. Miura;T. Sakai
DOI：
10.1016/j.msea.2014.04.024
发表时间：
2014-06
影响因子：
6.4
作者：
F. Guo;Dingfei Zhang;Xusheng Yang;Luyao Jiang;Chai Sensen;F. Pan
通讯作者：
F. Guo;Dingfei Zhang;Xusheng Yang;Luyao Jiang;Chai Sensen;F. Pan
DOI：
10.1007/s00170-011-3247-0
发表时间：
2011-10-01
影响因子：
3.4
作者：
Huang, Chi-Chen;Hung, Jung-Chung;Lin, Chia-Rung
通讯作者：
Lin, Chia-Rung
DOI：
10.5772/54285
发表时间：
2013-02
期刊：
--
影响因子：
--
作者：
Guo-Zheng Quan
通讯作者：
Guo-Zheng Quan
影响因子：
6.3
作者：
S. Chang;C.-A Huang;S.Y. Yu;Y. Chang;W. Han;Tien-shou Shieh;H.C. Chung;H. Yao;G. Shyu
通讯作者：
S. Chang;C.-A Huang;S.Y. Yu;Y. Chang;W. Han;Tien-shou Shieh;H.C. Chung;H. Yao;G. Shyu