Effects of small additions of Zn on the microstructure, mechanical properties and corrosion resistance of WE43B Mg alloys

被引：0

作者：

AVKoltygin ^{[1
]}

VEBazhenov ^{[1
]}

RSKhasenova ^{[1
]}

AAKomissarov ^{[2
]}

AIBazlov ^{[3
]}

VABautin ^{[4
]}

机构：

[1] Foundry Department, National University of Science and Technology “MISiS”

[2] Laboratory of Hybrid Nanostructured Materials, National University of Science and Technology “MISiS”

[3] Laboratory of Advanced Green Materials, National University of Science and Technology “MISiS”

[4] Department of Metallurgy Steel, New Production Technologies and Protection of Metals, National University of Science and Technology “MISiS”

来源：

InternationalJournalofMineralsMetallurgyandMaterials | 2019年 / 26卷 / 07期

关键词：

magnesium alloys; corrosion resistance; mechanical properties; Zn addition;

D O I：

暂无

中图分类号：

TG146.22 [];

学科分类号：

080502 ;

摘要：

Zn is a commonly used alloying element for Mg alloys owing to its beneficial effects on mechanical properties. To improve the mechanical and corrosion properties of WE43 B Mg alloys, the effects of 0–0.7 wt% Zn addition on the microstructure and properties of sample alloys were investigated. Addition of Zn to as-cast WE43 B alloy promoted the formation of the Mg12 Nd phase; by contrast, after T6 heat treatment, the phase composition of WE43 B alloys with and without Zn addition remained mostly the same. A long-period stacking ordered phase was predicted by CALPHAD calculation, but this phase was not observed in either the as-cast or heat-treated Zn-containing WE43 B alloys. The optimum temperature and duration of T6 heat treatment were obtained using CALPHAD calculations and hardness measurements. Addition of Zn resulted in a slight reduction in the average grain size of the as-cast and T6 heat-treated WE43 B alloys and endowed them with increased corrosion resistance with little effect on their mechanical properties.

引用

页码：858 / 868

页数：11

共 27 条

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