Hot-Working Behavior of 7075 Al/15% SiCp Composites

被引：24

作者：

Rajamuthamilselvan, M. ^{[1
]}

Ramanathan, S. ^{[1
]}

机构：

[1] Annamalai Univ, Dept Mfg Engn, Annamalainagar 608002, Tamil Nadu, India

来源：

MATERIALS AND MANUFACTURING PROCESSES | 2012年 / 27卷 / 03期

关键词：

Composites; Flow stress; Processing map; Recrystallization; PROCESSING MAPS; FLOW-STRESS; DYNAMIC RECRYSTALLIZATION; DEFORMATION-BEHAVIOR; MAGNESIUM ALLOY; PREDICTION; MODEL; TEMPERATURE; COPPER; STEEL;

D O I：

10.1080/10426914.2011.577872

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The hot-working behavior of 7075 aluminium alloy and 7075 Al alloy reinforced with 15% of SiC particles has been studied by using the processing maps. The material under investigation was deformed by compression in temperature and strain rate ranges of 300-500 degrees C and 0.001-1.0 s(-1), respectively. Domains for optimum hot working conditions were obtained using the processing maps and the instability zones were identified. Shear Band formation was noticed at higher strain rates and lower temperatures and particle fractures were noticed at higher strain rates and higher temperature thereby defining the domain of flow instability. The dynamic recrystallization (DRX) and instability zones were validated through micrographs. 7075 Al/15% SiCp composites is achieved better hot workability due to increase in strength and stiffness of the matrix by the addition of reinforcement.

引用

页码：260 / 266

页数：7

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