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http://dx.doi.org/10.3365/KJMM.2012.50.2.176

Endurance in Al Alloy Melts and Wear Resistance of Titanium Matrix Composite Shot-Sleeve for Aluminum Alloy Die-casting  

Choi, Bong-Jae (School of Advanced Materials Science and Engineering, Sungkyunkwan University)
Sung, Si-Young (Materials & Processing Engineering Center, Korea Automotive Technology Institute)
Kim, Young-Jig (School of Advanced Materials Science and Engineering, Sungkyunkwan University)
Publication Information
Korean Journal of Metals and Materials / v.50, no.2, 2012 , pp. 176-182 More about this Journal
Abstract
The main purpose of this study was to evaluate the endurance against Al alloy melts and wear resistance of an in-situ synthesized titanium matrix composite (TMC) sleeve for aluminum alloy die-casting. The conventional die-casting shot sleeve material was STD61 tool steel. TMCs have great thermal stability, wear and oxidation resistance. The in-situ reaction between Ti and $B_4C$ leads to two kinds of thermodynamically stable reinforcements, such as TiBw and TiCp. To evaluate the feasibility of the application to a TMCs diecasting shot sleeve, the interfacial reaction behavior was examined between Al alloys melts with TMCs and STD61 tool steel. The pin-on-disk type dry sliding wear test was also investigated for TMCs and STD61 tool steel.
Keywords
composites; self-propagating synthesis; wear; scanning electron microscopy;
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