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http://dx.doi.org/10.5228/KSPP.2007.16.5.386

Microstructure Control of Cu-Ni-Zr-Ti Metallic Glass Composites by Multi-Pass Extrusion Process  

Kim, Taek-Soo (한국생산기술연구원)
Lee, Jin-Kyu (한국생산기술연구원)
Publication Information
Transactions of Materials Processing / v.16, no.5, 2007 , pp. 386-390 More about this Journal
Abstract
In order to, simultaneously, synthesize and control the size of microstructure of amorphous/crystalline composites, a repeated extrusion process was performed using the gas atomized $Cu_{54}Ni_6Zr_{22}Ti_{18}$ metallic glass powders and the crystalline brasses. The size of microstructure in the resultant composites was varied depending on the pass of extrusion as well as on the area reduction ratio. The microstructure could be estimated using an equation of $r_n=r_{n-1}/R^{1/2}$, where R is reduction ratio and $r_n$ is the resultant radius of the extruded bar after n pass. Theory of microstructural refinement as well as the relationship between the resultant microstructures and mechanical properties was discussed.
Keywords
Extrusion; Microstructure Control; Amorphous; Powder Metallurgy; Mechanical Property;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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