Effect of Zr addition on the mechanical properties of as-extruded Mg-Zn-Ca-Zr alloys

被引：113

作者：

Homma, T. ^{[1
]}

Mendis, C. L. ^{[2
]}

Hono, K. ^{[2
]}

Kamado, S. ^{[1
]}

机构：

[1] Nagaoka Univ Technol, Dept Mech Engn, Niigata 9402188, Japan

[2] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2010年 / 527卷 / 09期

基金：

日本学术振兴会;

关键词：

Mg; Extrusion; Texture; HIGH-TEMPERATURE DEFORMATION; MAGNESIUM ALLOY; DYNAMIC RECRYSTALLIZATION; CRYSTALS; ZK60; FABRICATION; DUCTILITY; STRAIN; AZ31;

D O I：

10.1016/j.msea.2009.12.024

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Extrudable Mg-6Zn-0.2Ca(-0.8Zr) alloy (mass%) has been developed. The Mg-Zn-Ca-Zr alloy shows excellent mechanical properties in the as-extruded state with the ultimate tensile strength of 357 MPa and elongation to failure of 18%. These properties are related to dynamic recrystallization, texture and precipitation. Dynamically recrystallized grains are pinned by fine precipitates, resulting in very fine grain size. The extruded sample also exhibits; a higher average {0 0 0 2} < 1 1 (2) over bar 0 > Schmid factor due to the presence of unrecrystallized regions, leading to texture strengthening. Zr may work as a microalloying element, resulting in fine and dense distribution of a MgZn(2) based phase involving Ca and Zr. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：2356 / 2362

页数：7

共 28 条

[1]

[Anonymous], 1960, Magnesium and its Alloys

[2]

Avedesian M.M., 1999, MAGNESIUM MAGNESIUM

[3] Current wrought magnesium alloys: Strengths and weaknesses [J].