A Comparative Study on Microstructure and Tensile Properties of Spray Formed and Ascast Al-28Si-5Cu-4Fe and Al-28Si-5Cu-4Mg Alloys
IR@NML: CSIR-National Metallurgical Laboratory, Jamshedpur
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| Relation |
http://eprints.nmlindia.org/6699/
http://eprints.nmlindia.org/6699 |
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| Title |
A Comparative Study on Microstructure and Tensile Properties of Spray Formed and Ascast Al-28Si-5Cu-4Fe and Al-28Si-5Cu-4Mg Alloys
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| Creator |
Rudrakshi, G B
Goudar, D M Srivastava, V C |
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| Subject |
Aluminium Alloys
Structural Properties |
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| Description |
In the present study, Al-28Si, Al-28Si-5Cu-4Fe and
Al-28Si-5Cu-4Mg alloys were produced by spray forming and
subsequently hot pressed for densification. The effect of alloy composition on the microstructure and mechanical behavior of spray-formed alloys were investigated. The microstructures consist of an equiaxed, nearly spheroidized grain morphology of α-Al matrix. The spray formed alloys exhibited sharply decreased segregation and increased metastable solid solubility and greater volume fraction of Si particles and intermetallic phases. Spray formed Al-28Si-5Cu-4Fe alloy contains Al 2 Cu,
Al 5 FeSi along with Si. On the other hand, Al-28Si-5Cu-4Mg
alloy showed Al 2 Cu, Al 48 Si 29 Mg 18 and Si. Hot pressing lead to
a significant reduction of porosity and partial recrystallization
of spray formed alloys. The room temperature tensile tests of
spray formed hot pressed alloys showed significant increase
in ultimate tensile strength compared to as cast alloys. Spray
formed hot pressed Al-28Si-5Cu-4Fe alloy exhibited superior
ultimate tensile strength and significant increase in elongation to
fracture. This may be attributed to the presence of homogeneous
distribution of fine Si particles, high content of short needle-like
β-Al 5 FeSi intermetallic and precipitation strengthening phases.
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| Date |
2013
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| Type |
Conference or Workshop Item
PeerReviewed |
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| Format |
application/pdf
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| Language |
en
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| Identifier |
http://eprints.nmlindia.org/6699/1/%282013-with_Rudrakshi-ConferenceUK%29A_COMPARATIVE_STUDY_ON_MICROSTRUCTURE_AND_TENSILE_PROPERTIES_OF.pdf
Rudrakshi, G B and Goudar, D M and Srivastava, V C (2013) A Comparative Study on Microstructure and Tensile Properties of Spray Formed and Ascast Al-28Si-5Cu-4Fe and Al-28Si-5Cu-4Mg Alloys. In: World Congress on Engineering 2013, July 3-5, 2013, London, UK. |
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