Mechanical characterization and corrosion behavior of newly designed Sn and Y added AZ91 alloy

被引：55

作者：

Boby, Arun ^{[1
]}

Srinivasan, A. ^{[1
]}

Pillai, U. T. S. ^{[1
]}

Pai, B. C. ^{[1
]}

机构：

[1] CSIR, Mat Sci & Technol Div, NIIST, Thiruvananthapuram 695019, Kerala, India

来源：

MATERIALS & DESIGN | 2015年 / 88卷

关键词：

AZ91 magnesium alloy; Tin; Yttrium; Corrosion; High temperature tensile properties; IMPRESSION CREEP-BEHAVIOR; MAGNESIUM ALLOY; AGING BEHAVIOR; TENSILE PROPERTIES; AS-CAST; MICROSTRUCTURE; ADDITIONS; YTTRIUM; ELEMENTS; AZ31;

D O I：

10.1016/j.matdes.2015.09.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper deals the effect of Sn and Y additions on the microstructure, mechanical and corrosion properties of AZ91 alloy. It is found that by the addition of Sn, the formation and growth of discontinuous precipitate get suppressed and new intermetallic Mg2Sn phase is formed. In the case of Y addition together with Sn, the grain size gets refined, the volume of Mg17Al12 gets decreased and new intermetallic Al2Y phase is observed. Improved room and high temperature tensile properties are obtained in as-cast and aged Sn and Y added AZ91 alloy. However, maximum properties are obtained for the alloy having combined addition of 0.5 wt.% Sn and 0.9 wt.% Y. Improved corrosion resistance is also noticed with the addition of Sn and Y elements. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：871 / 879

页数：9

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