文献类型：期刊文献

英文题名：Ameliorating mechanical properties and reducing anisotropy of as-extruded Mg-1.0Sn-0.5Ca alloy via Al addition

作者：Chai, Yanfu[1];Shan, Lei[1];Jiang, Bin[2];Yang, Huabao[1];He, Chao[2];Hao, Wenxing[1];He, Junjie[3];Yang, Qingshan[4];Yuan, Ming[2];Pan, Fusheng[2]

机构：[1]Shaoxing Univ, Sch Mech & Elect Engn, Shaoxing 312000, Peoples R China;[2]Chongqing Univ, Coll Mat Sci & Engn, State Key Lab Mech Transmiss, Chongqing 400044, Peoples R China;[3]Yunnan Univ, Coll Mat Sci & Engn, Kunming 650091, Yunnan, Peoples R China;[4]Chongqing Univ Sci & Technol, Sch Met & Mat Engn, Chongqing 401331, Peoples R China

年份：2021

卷号：31

期号：5

起止页码：722

外文期刊名：PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL

收录：SCI-EXPANDED(收录号：WOS:000708680300011)、、Scopus(收录号：2-s2.0-85114726694)、WOS

基金：The authors are grateful for the financial supports from the Na-tional Natural Science Foundation of China (U1764253, 51971044, 51901204, U1910213 52001037, and U207601) , the National Defense Basic Scientific Research Program of China, the Chongqing Science and Technology Commission (cstc2017zdcy-zdzxX0006) , the Chongqing Scientific & Technological Talents Program (KJXX2017002) and Qinghai Scientific & Technological Program (2018-GX-A1) ,the Zhe-jiang Provincial Natural Science Foundation of China (Grant no. LGG21E050009) , the Research Start-up Funds of Shaoxing University (Grant No. 20210007) .

语种：英文

外文关键词：Mg-Sn-Ca alloy; Al content; Microstructure; Texture; Mechanical anisotropy

外文摘要：Effects of Al addition to a Mg-Sn-Ca ternary alloy on its microstructure and tensile properties after extrusion were studied via extrusion of Mg-1.0Sn-0.5Ca-xAl (x = 0, 0.8, 2.4 wt%) sheets and analysis of the extruded materials. The results showed that Al addition not only refined the grain size (from 9.8 +/- 0.7 mu m to 8.3 +/- 0.4 mu m and 7.6 +/- 0.5 mu m) but also accelerated the generation of more second phase (from 0.98 to 1.72 and 4.32%). Except for the CaMgSn and Mg2Ca in Mg-1.0Sn-0.5Ca alloy, new phase (Mg, Al)(2)Ca appeared after Al addition. The addition of Al into Mg-Sn-Ca alloy induced the textural variation from an initially ED-split double-peaked texture to a weakened texture, i.e., divergent elliptical texture, due to the effect of particle stimulated nucleation. This eventually contributed to the improvement of mechanical anisotropy as well as the higher Hc value and n-value. For the strain hardening behavior when tension along the TD, the prolonged stage II of Al-modified alloys was closely connected with the additional TD textural components, accelerating the activation of more basal slip. The decreased theta III0 in stage III of Al-modified alloys is beneficial to the grain refinement and the emergence of more second phase.