Microstructure characterization and mechanical properties of Mg-9Li-5Al-1Zn-0.6RE alloy

被引：0

作者：

Wu Rui-zhi ^{[1
]}

Zhang Mi-lin ^{[1
]}

Wang Tao ^{[1
]}

机构：

[1] Harbin Engn Univ, Key Lab Suprlight Mat & Surface Technol, Minist Educ, Harbin 150001, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2007年 / 17卷

关键词：

homogenization temperature; magnesium-lithium alloy; microstructure; mechanical properties;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Mg-9Li-5Al-1Zn-0.6RE alloy was prepared by vacuum induction heating. The microstructure and phases composition of the alloy were analyzed with optical microscope, scanning electron microscope and X-ray diffractometer. Then the effect of homogenization temperature on microstructure and mechanical properties of the alloy was studied. The hardness of samples under different homogenization temperatures was measured. The results show that, the alloy is composed of alpha phase, beta phase, Mg17Al12 and AlLi. RE added into the alloy is solved in alpha phase and beta phase completely. After homogenization heat treatment, the needle-like alpha phase disappears. With the increase of homogenization temperature, the shape of alpha phase is spherical-like first, then vermicular-like, and large block-like finally. The variation of the shape of alpha phase causes the hardness of sample to change accordingly. The most favorable homogenization temperature for microstructure and mechanical proper-ties is 150 V.

引用

页码：S448 / S451

页数：4

共 12 条

[1] Mechanical properties and microstructures of various Mg-Li alloys [J].

Chang, Tien-Chan ;

Wang, Jian-Yih ;

Chu, Chun-Len ;

Lee, Shyong .

MATERIALS LETTERS, 2006, 60 (27) :3272-3276

[2] On the transformation characteristics of LA141A (Mg-Li-Al) alloy [J].

Crawford, P ;

Barrosa, R ;

Mendez, J ;

Foyos, J ;

EsSaid, OS .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 1996, 56 (1-4) :108-118

[3] Improving the superplastic properties of a two-phase Mg-8% Li alloy through processing by ECAP [J].

Furui, M ;

Xu, C ;

Aida, T ;

Inoue, M ;

Anada, H ;

Langdon, TG .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 410 :439-442

[4] Development, processing and applications range of magnesium lithium alloys [J].

Haferkamp, H ;

Niemeyer, M ;

Boehm, R ;

Holzkamp, U ;

Jaschik, C ;

Kaese, V .

MAGNESIUM ALLOYS 2000, 2000, 350-3 :31-41

[5] Texture evolution in rolled Mg-13wt%Li-X alloy [J].

Li, Li ;

Zhou, Tietao ;

Li, Huanxi ;

Chen, Changqi ;

Wu, Qiulin ;

Zhang, Qingquan .

2006 BIMW: 2006 BEIJING INTERNATIONAL MATERIALS WEEK, PTS 1-4: MAGNESIUM, 2007, 546-549 :347-+

[6] Mechanical properties of a two-phase alloy Mg-8%Li-1%Al processed by equal channel angular pressing [J].

Liu, T ;

Zhang, W ;

Wu, SD ;

Jiang, CB ;

Li, SX ;

Xu, YB .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 360 (1-2) :345-349

[7] Characteristics of superplasticity domain in the processing map for hot working of as-cast Mg-11.5Li-1.5Al alloy [J].

Sivakesavam, O ;

Prasad, YVRK .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 323 (1-2) :270-277

[8]

TANG DX, 2003, SICHUAN RARE EARTH, P14

[9]

Wang T, 2006, J RARE EARTH, V24, P797

[10] Precipitation in Mg-(4-13)%Li-(4-5)%Zn ternary alloys [J].

Yamamoto, A ;

Ashida, T ;

Kouta, Y ;

Kim, KB ;

Fukumoto, S ;

Tsubakino, H .

MATERIALS TRANSACTIONS, 2003, 44 (04) :619-624

← 1 2 →