Effects of Zr on Solidification Structure and Mechanical Properties of Mg97Y2Cu1 Alloy Reinforced by Long Period Ordered Structure

Zhang Sen; Zhou Quan; Zhang Hao

doi:10.15980/j.tzzz.2015.11.029

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Effects of Zr on Solidification Structure and Mechanical Properties of Mg₉₇Y₂Cu₁ Alloy Reinforced by Long Period Ordered Structure
Vol. 35, Issue 11, Pages: 1226-1229(2015)
Published： 2015 ，
DOI： 10.15980/j.tzzz.2015.11.029

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[1]章森,周全,张浩.Zr对Mg_(97)Y_2Cu_1合金组织与性能的影响[J].特种铸造及有色合金,2015,35(11):1226-1229.

Zhang Sen, Zhou Quan, Zhang Hao. Effects of Zr on Solidification Structure and Mechanical Properties of Mg₉₇Y₂Cu₁ Alloy Reinforced by Long Period Ordered Structure. [J]. Special Casting & Nonferrous Alloys 35(11):1226-1229(2015)
[1]章森,周全,张浩.Zr对Mg_(97)Y_2Cu_1合金组织与性能的影响[J].特种铸造及有色合金,2015,35(11):1226-1229. DOI： 10.15980/j.tzzz.2015.11.029.

Zhang Sen, Zhou Quan, Zhang Hao. Effects of Zr on Solidification Structure and Mechanical Properties of Mg₉₇Y₂Cu₁ Alloy Reinforced by Long Period Ordered Structure. [J]. Special Casting & Nonferrous Alloys 35(11):1226-1229(2015) DOI： 10.15980/j.tzzz.2015.11.029.

摘要

研究了0

.2%的Zr含量对长周期结构增强Mg97Y2Cu1合金凝固组织和力学性能的影响。结果表明

Zr可以显著细化合金的初生晶粒

使第二相分布变得均匀。在合金中加入Zr后

生成了少量颗粒状的CuZr2相

分布在α-Mg基体中。随着Zr加入量的增加

合金的力学性能逐渐提高;当Zr加入量为1.2%时

合金的抗拉强度和伸长率分别为218MPa和9.4%

较未合金化处理的试样分别提高了26%和62%。

Abstract

Influences of Zr（0

.2%）on solidification structure and mechanical properties of Mg97Y2Cu1 alloy reinforced by long period ordered structure were investigated.The results show that primary grains in the alloy can be refined greatly by Zr addition.Distribution of second phase becomes more uniform with volume fraction increase.A little of granular CuZr2 phase can be generated in the alloy after Zr addition

which distributes inα-Mg matrix.Mechanical properties of the alloy are increased gradually with the increase of Zr addition.With the addition of 1.2% Zr

the tensile strength and elongation of the alloy reach 218 MPa and 9.4%

which are increased by up to 26%and 62%

respectively

compared with those of the alloy without Zr addition.