Nd对AZ31镁合金微观组织与力学性能的影响

Effect of Nd on Microstructure and Mechanical Properties of AZ31 Magnesium Alloy

摘要:

研究了Nd 对AZ31镁合金微观组织和力学性能的影响。结果表明：Nd 在AZ31合金中的吸收率达95%，Nd加入 AZ31合金中形成了Al2Nd和Mg12Nd金属间化合物，Nd使合金的平均晶粒尺寸减小，力学性能提高。含Nd 的AZ31合金铸态抗拉强度、屈服强度和伸长率值分别为245 MPa、171 MPa和9%。

Abstract:

Effect of Nd on as-cast microstructure and mechanical properties of AZ31 magnesium alloy were investigated by ICP, metallographic microscopy, SEM, EDS, XRD and mechanical measurement. The results show that the microcontent of Nd added in AZ31 alloy could result in the formation of intermetallic compounds of Al2Nd and Mg12Nd at grain boundary and in α-Mg matrix, and the absorption rate of Nd reached 95%, which obviously refined AZ31 alloy microstructure and further improved mechanical properties. The AZ31 alloy containing Nd showed a tensile strength of 245 MPa, a yield strength of 171 MPa and a elongation of 9%.