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Microstructure and Properties of Mg-10 Al-(0 ~ 3 )Di Alloys

机译:Mg-10%Al-(0〜3%)Di合金的组织和性能

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摘要

The effects of didymium(Nd: Pr = 3: l)on the microstructure and mechanical properties of Mg-10% Al alloy were studied with the additions of 0~3%Di. The small block-like Al_2(Nd,Pr) phase appears in l%Di alloy, the blocklike Al_2(Nd,Pr) and needle-like Al_(11)(Nd,Pr)_3 phases appear synchronously in 2%Di and 3%Di alloys, while the network of (Mg_(17)Al_(12)) β phase is broken up. The tensile properties can be improved with the addition of didymium. When the addition of didymium in Mg-10%Al alloy reaches 2% , the alloy exhibits the best combination of strength and ductility , but the strength and ductility drop at the addition of 3 % Di due to the obvious increase of the size and quantity of the needle-like Al_(11)(Nd,Pr)_3 phase.
机译:研究了掺钕(Nd:Pr = 3:1)对Mg-10%铝合金的组织和力学性能的影响,添加了0〜3%Di。在1%Di合金中出现小块状Al_2(Nd,Pr)相,在2%Di和3中同步出现块状Al_2(Nd,Pr)和针状Al_(11)(Nd,Pr)_3相。 %Di合金,而(Mg_(17)Al_(12))β相的网络破裂。可以通过添加did来改善拉伸性能。当Mg-10%Al合金中钕的含量达到2%时,合金表现出强度和延性的最佳组合,但Di的含量和强度的下降则是由于尺寸和数量的明显增加而降低的。针状Al_(11)(Nd,Pr)_3相的相变。

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