ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
This paper deals with the microstructure and property of zinc based composites ZA27Sixunder the treatment of the sodium salt and the rare earth. The test material was prepared with pure zincingot (Zn≥99.99wt %) and the Al-Si matrix alloy. Basic composition of the test sample was Al (25~30wt %), Si (2.5~6.0 wt %) and Zn for the rest. Impact toughness test, tensile test and wear test wereconducted. The test results show that under the treatment of sodium the massive primary siliconcrystal can transform to nodular silicon on which eutectic silicon crystal can form and grow inrod-like. It is also found that the combined effect of rare earth and sodium salt can obviously refine thesilicon phase and the zinc based composites enhanced by nodular silicon has better hardness andwear- resistance
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.561-565.693.pdf
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