| Production and wear assessment of Ti/SiC nano-composite surface layers with various SiC contents using friction stir processing |
| Paper ID : 2503-UFGNSM13-FULL (R1) |
| Authors: |
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Seyed Farshid Kashani-Bozorg1, Abbas Zarei Hanzaki2 1College of Engineering-School of Metallurgy-University of Tehran-Tehran-Iran 2Professor, School of Metallurgy and Material Engineering, College of Engineering University of Tehran |
| Abstract: |
| Commercially pure titanium substrate pre-placed with different amount of nano-sized SiC powder was friction stir processed. Introduction of nano-sized powder to the stir zone was carried out by means of surface groove with different depth and width. Near uniform nano-sized SiC dispersion was achieved after three additional passes using a fixed tool rotation and substrate advancing speed. Ti/SiC nano-composite surface layers with SiC volume fractions of 5.5, 2, and 1% were fabricated that exhibited a micro hardness value of ~638, 433 and 379 HV, respectively; these are much greater than ~160 HV of their underlying substrate material. In addition, the nano-composite surface layers showed superior wear performance than their underlying substrate. The greater the SiC content, the lower the weight-loss data and the higher the resistance to wear. |
| Keywords: |
| nano-composite, friction stir processing |
| Status : Paper Accepted (Poster Presentation) |
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