Effect of Zr Addition on the Corrosion Behavior of Extruded Mg Alloys in NaCl Solution

被引：2

作者：

Jeong, Seok-Hoan ^{[1
]}

Kim, Byung-Jin ^{[1
]}

Lim, Hyun-Kyu ^{[2
]}

Kim, Won-Tae ^{[3
]}

Kim, Do Hyang ^{[1
]}

Jeon, Soon-Hyeok ^{[4
]}

机构：

[1] Yonsei Univ, Dept Mat Sci & Engn, 134 Shinchon Dong, Seoul 120749, South Korea

[2] Korea Inst Ind Technol, Rare Met R&BD Grp, Incheon, South Korea

[3] Cheongju Univ, Dept Opt Engn, 36 Naedok Dong, Cheongju 360764, South Korea

[4] Korea Atom Energy Res Inst, Nucl Mat Res Div, 989-111 Daedeok Daero, Daejeon 305353, South Korea

来源：

MATERIALS TRANSACTIONS | 2018年 / 59卷 / 03期

关键词：

magnesium alloy; zirconium; extrusion; corrosion; weight loss; GD-ZN ALLOYS; MECHANICAL-PROPERTIES; MAGNESIUM ALLOY; MICROSTRUCTURE; REFINEMENT;

D O I：

10.2320/matertrans.M2017329

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of Zr addition on the corrosion behavior of an extruded Mg-10Gd-1Zn alloy (GZ101) in 3.5 mass% NaCl solution was investigated by electrochemical and immersion tests in 3.5% NaCl solution. The addition of 1 mass% Zr to GZ101 (to afford GZ101-1Zr) decreased the fraction of 14H (number of stacking layers and H-Hexahedral structure) and lamellar long period stacking ordered (LPSO) phases across the alpha-Mg matrix and increased the fraction of the X-phase (Mg12GdZn) formed at grain boundaries. Extruded GZ101-1Zr exhibited a significantly smaller corrosion rate than extruded GZ101 (0.13 vs. 2.11 mm.year(-1)) due to containing less 14H/lamellar LPSO phases (detrimental to corrosion resistance) and featuring a noble {10 (1) over bar0} prismatic texture in the extrusion direction.

引用

页码：499 / 502

页数：4

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