Refining Effects of Trace Nd on Grain Size in Mg-Zn Alloy

Zhao Liping; Zhao Yongtao; Zhang Mingli; Liu Lixin

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Refining Effects of Trace Nd on Grain Size in Mg-Zn Alloy
Vol. 29, Issue 10, Pages: 889-891(2009)
Published： 2009 ，
DOI：

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[1]赵莉萍,赵勇桃,张明利,刘丽新.Nd在铸造Mg-Zn合金中的晶粒细化作用[J].特种铸造及有色合金,2009,29(10):889-891+875.

Zhao Liping, Zhao Yongtao, Zhang Mingli, et al. Refining Effects of Trace Nd on Grain Size in Mg-Zn Alloy. [J]. Special Casting & Nonferrous Alloys 29(10):889-891(2009)
[1]赵莉萍,赵勇桃,张明利,刘丽新.Nd在铸造Mg-Zn合金中的晶粒细化作用[J].特种铸造及有色合金,2009,29(10):889-891+875. DOI：

Zhao Liping, Zhao Yongtao, Zhang Mingli, et al. Refining Effects of Trace Nd on Grain Size in Mg-Zn Alloy. [J]. Special Casting & Nonferrous Alloys 29(10):889-891(2009) DOI：

摘要

为研究稀土元素Nd对Mg-Zn合金显微组织和力学性能的影响

在ZMgZn4合金中分别加入0.4%、0.8%、1.2%的稀土元素Nd

观察分析了试样的显微组织

测量了平均晶粒直径

并测定了合金的力学性能。结果表明

当ZMgZn4合金中Nd含量为1.2%时

其晶粒最细

力学性能最佳

平均晶粒直径由145μm减小到42μm

布氏硬度由76增加到87

伸长率由5.3%提高到9.3%

抗拉强度由149MPa提高到169MPa。

Abstract

Effects of different Nd additions

such as 0.4%

0.8% and 1.2%

on microstructure and mechanical properties of Mg-Zn alloy were investigated by observing microstructure

measuring average diameter of the grain size and testing hardness and tensile strength. The results reveal that the finest grain size and desirable mechanical properties can be observed in the Mg-Zn alloy with 1.2% Nd addition

in which the average grain diameters are decreased from 145 μm to 42 μm

and hardness （HB）

elongation and tensile strength are increased from 76 to 87

from 5.3% to 9.3% and from 149 MPa to 169 MPa

respectively.