Simultaneously improved strength and toughness of a Mg?Sn alloy through abundant prismatic lath-shaped precipitates
Simultaneously improved strength and toughness of a Mg?Sn alloy through abundant prismatic lath-shaped precipitates
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通过丰富的棱柱板条状析出物同时提高 Mg?Sn 合金的强度和韧性
DOI：
10.1016/j.msea.2021.141087
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发表时间：
2021
期刊：
影响因子：
6.4
通讯作者：
Jiang B.
中科院分区：
文献类型：
--
作者：
Wan Y. J.;Zeng Y.;Zeng Q.;Song B.;Huang X. F.;Qian X. Y.;Jiang B.
通过在Mg-Sn合金中添加合金，形成了非基相，增强了时效硬化反应，但这种方法只产生了少量的非基相，强化效果有限。在Mg-Sn合金中产生了大量板条状Mg2Sn析出，其习惯面有目的地从基面转变为棱柱面。同时提高了材料的强度和韧性。其中，抗压屈服强度（CYS）和抗压失效强度（CF）分别提高了137%和75%。这是由于丰富的棱柱形板条对基底滑移和孪晶有明显的阻碍作用。
Non-basal precipitates have been fabricated via alloying addition in Mg–Sn alloy to enhance the aging hardening response, while only a small number of precipitates obtained by this method contribute limited strengthening effect. In this work, a large number of lath-shaped Mg2Sn precipitates were produced in Mg–Sn alloy with the habit planes (HPs) purposely transformed from basal plane to prismatic plane. As a result, the strength and toughness were simultaneously enhanced. Specifically, the compressive yield strength (CYS) and compression to failure (CF) were increased by 137% and 75%, respectively. It is attributed to the appreciable impediment effect of the abundant prismatic laths on basal slip and twinning.