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首页> 外文期刊>Materials Science and Engineering >Effect of rare earth elements on the microstructure and texture development in magnesium-manganese alloys during extrusion
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Effect of rare earth elements on the microstructure and texture development in magnesium-manganese alloys during extrusion

机译：稀土元素对镁锰合金挤压过程中组织和织构发展的影响

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摘要

Single additions of the rare earth (RE) elements cerium, yttrium or neodymium have been made to magnesium-manganese alloys in order to investigate their influence on the microstructure and texture formed during indirect extrusion and the resulting mechanical properties. Whereas the binary Mg-Mn alloy Ml exhibits a <10.0> or <10.0>-<11.0> fibre texture depending on the extrusion rate, the RE-containing alloys exhibit weaker recrystallisation textures and the formation of a new texture component. The preferential growth of grains having <11.0> parallel to the extrusion direction was hindered in these alloys. For the rare earth elements used in this work it appears that Nd is a much stronger texture modifier compared to Ce or Y in Mg-Mn alloys. The weaker texture leads to increased ductility, lower yield and ultimate stresses, but a decrease in the asymmetric yield behaviour of the extruded bars.
机译：为了研究镁对锰合金的间接挤压过程中形成的微观结构和织构以及所产生的机械性能的影响，已经向镁锰合金中添加了稀土元素铈，钇或钕。尽管二元Mg-Mn合金M1根据挤出速率表现出<10.0>或<10.0>-<11.0>纤维织构，但含RE的合金表现出较弱的重结晶织构和新的织构成分的形成。在这些合金中，阻碍了具有与挤出方向平行的<11.0>的晶粒的优先生长。对于这项工作中使用的稀土元素，与Mg-Mn合金中的Ce或Y相比，Nd似乎是一种更强的织构改性剂。较弱的织构导致增加的延展性，较低的屈服强度和极限应力，但降低了挤压棒材的不对称屈服行为。

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