ISSN:
1013-9826
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:
Friction stir processing (FSP) has been applied to fabricate 10~20 vol% nano-sized ZrO2and 5~10 vol% nano-sized SiO2 particles into an Mg-AZ31 alloy to form bulk composites underthe FSP parameters of advancing speed of 800 rpm and pin rotation of 45 min/min. Themicrostructures and mechanical properties of the resulting composites were investigated. Theclustering size of nano-ZrO2 and nano-SiO2 particles, measuring average ~200 nm was relativelyuniformly dispersed, and the average grain size of the both Mg alloy of the composites variedwithin 1.0~2.0 μm after four FSP passes. No evident interfacial product between ZrO2 particles andMg matrix was found during the FSP mixing in AZ31-Mg/ZrO2. However, significant chemicalreactions at the AZ31-Mg/SiO2 interface occurred to form the Mg2Si phase. The mechanicalresponses of the nano-composites in terms of hardness and tensile properties are examined andcompared
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.351.114.pdf
Permalink