Effect of predeformation and heat treatment conditions in the SIMA process on microstructural and mechanical properties of A319 aluminum alloy

被引：22

作者：

Arami, Hamed ^{[2
]}

Khalifehzadeh, Razieh ^{[1
,2
]}

Keyvan, Hamed ^{[1
]}

Khomamizadeh, Farzad ^{[1
]}

机构：

[1] Sharif Univ Technol, Dept Mat Sci & Engn, Tehran 113659466, Iran

[2] Mat & Energy Res Ctr, Tehran, Iran

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 468卷 / 1-2期

关键词：

Metals and alloys; Mechanical properties; Microstructure; Metallography; SEMISOLID STATE; EVOLUTION;

D O I：

10.1016/j.jallcom.2008.01.020

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study the influences of predeformation and heat treatment conditions on stress-induced melt activating process (SIMA)of A319 aluminum alloy were investigated. At 30% of predeformation a dominant globular structure of grains was obtained. However, further increasing of the predeformation rate considerably reduced the shape factor. The holding time of 10-15 min at semi-solid temperature of 580 degrees C was suggested in order to prevent.-rain growth. Coarsening of the grains by excess time or temperature of heat treatment reduced the tensile strength of the alloy. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：130 / 135

页数：6

共 19 条

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