Publisher： Trans Tech Publications
E-ISSN： 1662-7482|2015|789|121-125
ISSN： 1660-9336
Source： Applied Mechanics and Materials, Vol.2015, Iss.789, 2015-10, pp. : 121-125
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Abstract
The hard spots are investigated in ADC12 die casting cylinder blocks for air compressors using metallographic method and a micro- hardness tester. The results show that the hard spots have two main shapes. There is a nonuniform micro-hardness distribution within a hard spot. Energy dispersive spectrometry (EDS) analysis reveals that these hard spots are some kind of mixture of oxide and carbide, which are formed during melting and die casting process.
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