Mg-Nd-Zr-Zn合金的制备及钕对合金组织性能的影响

Preparation of Mg-Nd-Zr-Zn Alloy and Effect of Neodymium on Its Structure and Property

在RJ 2溶剂和Be的联合保护下制备了Mg Nd Zr Zn系合金。通过对合金组织的分析,以及Nd对组织性能影响的研究,试制出了Nd添加量合理的Mg Nd Zr Zn合金。经过测试,认为Nd添加量的增加提高了合金的250℃高温抗拉强度,当Nd添加量超过2.8%时,合金的高温强化作用不十分显著。Mg Nd Zr Zn合金在250℃时的拉伸断裂方式主要是韧性断裂。

Mg-Nd-Zr-Zn alloy was prepared under the combined protection of solvent RJ-2 and Be. Based on the analyses of the structure and the effect of Nd on the high temperature tensile property of the alloy, Mg-Nd-Zr-Zn alloy with reasonabse addition of Nd was ascertained. Tensile tests show that with the increase of the amount of Nd, the high temperature tensile strength of the alloy is improved. When the amount of Nd exceeds 2.8%, its effect on high temperature tensile strength of the alloy is not remarkable. Under the temperature of 250 ℃, the alloy ruptures is mainly tenacious.