Effect of ultrasonic power on microstructure and mechanical properties of AZ91 alloy

被引：94

作者：

Gao, Deming ^{[2
]}

Li, Zhijun

Han, Qingyou ^{[3
]}

Zhai, Qijie ^{[1
]}

机构：

[1] Shanghai Univ, Sch Mat Sci & Engn, Shanghai Key Lab Modern Met & Mat Proc, Shanghai 200072, Peoples R China

[2] Shanghai Huizhong Automot Mfg Co Ltd, Shanghai, Peoples R China

[3] Purdue Univ, Mech Engn Technol Dept, W Lafayette, IN 47907 USA

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2009年 / 502卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

AZ91; alloy; Ultrasonic power; Grain size; Mechanical properties; MAGNESIUM ALLOY; PLASTIC-DEFORMATION; GRAIN-REFINEMENT; SOLIDIFICATION; BEHAVIORS;

D O I：

10.1016/j.msea.2008.12.005

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Ultrasonic vibration with different powers from 0W to 700W was applied during the solidification process of AZ91 alloy. The microstructures and mechanical properties of the treated AZ91 alloy were characterized. Without subject to ultrasonic vibration (0W of ultrasonic power), the dendrites were coarse and large. Globular grains were obtained in AZ91 alloy subject to high intensity ultrasonic vibration. The grain size was decreased gradually from 202 mu m to 146 mu m with increasing ultrasonic power. The mechanical properties of the treated alloy were also improved. The ultimate tensile strength was increased from 145 MPa to 195 MPa and elongation to fracture from 2.3% to 5.2% correspondingly with increasing ultrasonic power. The mechanism by which ultrasonic power affects the microstructure and mechanical properties of AZ91 alloy is discussed. (C) 2009 Published by Elsevier B.V.

引用

页码：2 / 5

页数：4

共 18 条

[1]

ABRAMOV OV, 1994, ULTRASOUND LIQUID SO, P41

[2]

Fang CF, 2007, J MATER SCI TECHNOL, V23, P806

[3]

Jian X, 2006, MAGNESIUM TECHNOLOGY 2006, PROCEEDINGS, P103

[4] Effect of power ultrasound on solidification of aluminum A356 alloy [J].

Jian, X ;

Xu, H ;

Meek, TT ;

Han, Q .

MATERIALS LETTERS, 2005, 59 (2-3) :190-193

[5]

LIU QM, 2007, THESIS SHANGHAI U, P90

[6] Microstructure and mechanical properties of AZ91 alloy produced with ultrasonic vibration [J].

Liu, Xinbao ;

Osawa, Yoshiaki ;

Takamori, Susumu ;

Mukai, Toshiji .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 487 (1-2) :120-123

[7]

Matsunaga T., 2006, Journal of Japan Institute of Light Metals, V56, P214, DOI 10.2464/jilm.56.214

[8] Magnesium - Properties - applications - potential [J].

Mordike, BL ;

Ebert, T .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 302 (01) :37-45

[9]

Nelson C.E., 1948, T AFS, V56, P1

[10] Recent developments in light alloys [J].

Polmear, IJ .

MATERIALS TRANSACTIONS JIM, 1996, 37 (01) :12-31

← 1 2 →