Effect of Li content on microstructure and mechanical property of Mg-xLi-3(Al-Si) alloys

被引：29

作者：

Zhang, Cheng ^{[1
,2
]}

Wu, Liang ^{[1
,2
]}

Zhao, Zi-long ^{[3
]}

Xie, Zhi-hui ^{[4
]}

Huang, Guang-sheng ^{[1
,2
,5
]}

Liu, Lei ^{[1
,2
]}

Jiang, Bin ^{[1
,2
,5
]}

Atrens, Andrej ^{[6
]}

Pan, Fu-sheng ^{[1
,2
,5
]}

机构：

[1] Chongqing Univ, Coll Mat Sci & Engn, State Key Lab Mech Transmiss, Chongqing 400044, Peoples R China

[2] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China

[3] Chongqing Univ, Coll Civil Engn, Chongqing 400045, Peoples R China

[4] China West Normal Univ, Coll Chem & Chem Engn, Synth & Pollut Control Key Lab Sichuan Prov, Nanchong 637002, Peoples R China

[5] Chongqing Acad Sci & Technol, Chongqing Res Ctr Adv Mat, Chongqing 401123, Peoples R China

[6] Univ Queensland, Sch Mech & Min Engn, Brisbane, Qld 4072, Australia

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2019年 / 29卷 / 12期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Mg-Li alloy; Al-Si eutectic; second phase; tensile strength; elongation; LAYERED DOUBLE HYDROXIDE; ICOSAHEDRAL PHASE; MG ALLOY; CRYSTALLOGRAPHIC TEXTURE; SI ADDITIONS; CORROSION; AL; EVOLUTION; BEHAVIOR; MG-8LI;

D O I：

10.1016/S1003-6326(19)65158-7

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Mg-4Li-3(Al-Si), Mg-8Li-3(Al-Si) and Mg-12Li-3(Al-Si) alloys based on the alpha-Mg, alpha-Mg+beta-Li, beta-Li phases, respectively, were produced to investigate the effect of alloying with Al-Si eutectic on the microstructure and mechanical properties of the three alloys. Alloying with the Al-Si eutectic of Mg-xLi (x=4, 8 and 12 wt.%) alloys caused the formation of different types of Al-Li precipitates: Al3Li, AlLi and Li3Al2, respectively. Also, considerable quantities of Mg2Si phase particles were found in the three alloys. The results of tensile tests showed that the Mg-4Li-3(Al-Si) alloy exhibited the highest ultimate tensile strength (UTS) of 249 MPa but the lowest elongation of 6.3%. The Mg-12Li-3(Al-Si) alloy had the highest elongation of 26% but the lowest UTS of 173 MPa. The different mechanical properties were attributed to the different crystal structures of the three alloys and the precipitate with different type, morphology and distribution.

引用

页码：2506 / 2513

页数：8

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