Processing and characterisation of modified strain-induced melt activation processed Al-Si alloys

被引：8
|
作者：
Choudhary, Chandan [1 ]
Sahoo, Kanai Lal [2 ]
Mandal, Durbadal [1 ]
机构：
[1] Natl Inst Technol Durgapur, Dept Met & Mat Engn, Mahatma Gandhi Ave, Durgapur 713209, WB, India
[2] CSIR, Natl Met Lab, Mat Engn Div, Jamshedpur, Bihar, India
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2020年 / 36卷 / 02期
关键词：
Al-Si alloys; casting defects; modified strain-induced melt activation process; fibrous eutectic silicon; microstructural features; mechanical properties; DSC analysis; fractography; AZ91D ALLOY; ALUMINUM; BEHAVIOR; MICROSTRUCTURE;
D O I：
10.1080/02670836.2019.1686564
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present study, the microstructural features and its correlation with mechanical properties of modified strain-induced melt activation (modified SIMA) processed Al- (7, 12, 14 wt-%) Si alloys are investigated. The microstructure of modified SIMA process Al-Si alloys consists of globular alpha-Al grains, primary Si particles and Al-Si eutectic phase. The casting defects and surface roughness are minimised and the morphology of eutectic silicon is modified after modified SIMA treatment. The mechanical properties of modified SIMA processed samples are increased significantly as compare to as-cast alloy due to reduction of porosity, formation of fine globular microstructu+re and accumulation of high dislocation tangle near primary Si particles.
引用
收藏
页码：181 / 193
页数：13
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