Comparison of Mechanical Properties of Al-TiB2 Composite in as Cast, Heat Treated and Extruded Condition

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Khodabakhsh Pirkalani, Maryam | 2012

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 43613 (07)
University: Sharif University Of Technology
Department: Materials Science and Engineering
Advisor(s): Varahram, Naser; Davami, Parviz
Abstract:
This research focused on mechanical properties of Al-TiB2 composite in as cast, heat treated and extruded condition. The composites were produced by mixing Al-Ti and Al-B master alloyes. Since some engineering parts during service are supposed to tolerate severe wear conditions, in this research abrasive wear condition was wxamined using pin on disk method. In a fixed load and abrasive disk, composites showed better resistance against wear in comparison with matrix alloy. Furtheremore, T6 heat treatment made composites more resistant against abrasive wear. Finally the best wear resistance was accompolished when composite was extruded and then heat treated. While increase in reinforcement particles increased the wear resistance, the wear resistance was fixed when extrusion ratio altered from 6:1 to 12:1
Keywords:
Composite ; Wear Properties ; Extrusion ; Heat Treatment ; In-Situ Reaction

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