Aluminium alloy-solid lubricant talc particle composites
IR@AMPRI: CSIR-Advanced Materials and Processes Research Institute, Bhopal
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| Title |
Aluminium alloy-solid lubricant talc particle composites
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| Creator |
Dr., T. K. Dan
Dr., A K Jha Dr., P K Rohatgi Dr., S. V. Prasad |
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| Subject |
Material/Component Development, Processing and Characterization
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| Description |
This paper describes the method of synthesizing cast aluminium alloy talc particulate composites and their mechanical and wear properties. Talc particles were characterized using X-ray diffraction, infrared spectroscopy and differential thermal analysis techniques. Composites with two Al-Si alloys (LM 13 and LM 6) as matrices were prepared by heating the molten alloys to 750° C and adding the preheated talc powder (−150 + 50 μm size) after creating a vortex by mechanically stirring the melt. Simultaneous addition of 2 wt% Mg was found to facilitate the introduction and dispersion of talc particles in molten Al-Si alloys. Composites containing 2.8 wt % talc in LM 13 and 2 wt % talc in LM 6 have been prepared. Optical micrographs of composites revealed uniform distribution of talc particles. Hardness and tensile strength of LM 13+2.8% talc were 85 BHN and 126 MPa, respectively. After suitable heat treatment hardness and strength were increased to 125 BHN and 211 MPa respectively. Wear rates of LM 13+2.8 wt% talc and LM 6+2 wt % talc composites were found to be 22 to 30% less than the wear rates of corresponding base alloys without any dispersions.
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| Date |
1985
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| Type |
Article
PeerReviewed |
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| Identifier |
Dr., T. K. Dan and Dr., A K Jha and Dr., P K Rohatgi and Dr., S. V. Prasad (1985) Aluminium alloy-solid lubricant talc particle composites. Journal of Materials Science Letters, 21. pp. 3681-3685. ISSN 0022-2461
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| Relation |
http://ampri.csircentral.net/291/
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