Grain refinement of AZ91 alloy by introducing ultrasonic vibration during solidification

被引：112

作者：

Liu, Xinbao ^{[1
]}

Osawa, Yoshiaki ^{[1
]}

Takamori, Susumu ^{[1
]}

Mukai, Toshiji ^{[1
]}

机构：

[1] Natl Inst Mat Sci, Struct Metals Ctr, Lightweight Alloys Grp, Tsukuba, Ibaraki 3050047, Japan

来源：

MATERIALS LETTERS | 2008年 / 62卷 / 17-18期

关键词：

magnesium alloys; microstructure; grain refinement; ultrasonic vibration;

D O I：

10.1016/j.matlet.2008.01.063

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ultrasonic vibration was introduced into the solidification of AZ91 alloy. Various microstructures were produced in this alloy using ultrasonic vibrations at different temperatures of the melt. The coarse dendrite microstructures were obtained with ultrasonic vibrations at temperatures below the liquidus temperature. The fine uniform grains were achieved under ultrasonic vibrations during the nucleation stage, which was mainly attributed to the cavitation and the acoustic flow induced by the ultrasonic vibration. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：2872 / 2875

页数：4

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