The Effects of B₄C Amount on Hardness and Wear Behaviours of 7075-B₄C Composites Produced by Powder Metallurgy Method

• Authors: H. Ay , D. Özyürek , M. Yıldırım , B. Bostan
• Languages of publication: EN

Abstracts

EN

In this study, the effects of B₄C amount on hardness and wear behaviours of 7075 Al-B₄C composites produced by powder metallurgy method were investigated. Within the scope of work, different amount of B₄C (3, 6, 9%) added into gas atomized 7075 Al powders. The powders were mixed in Turbula with 67 rpm for 45 min. Then the composite powders were pre-shaped by cold pressing under 600 MPa pressure. Pre-shaped samples were sintered in atmosphere controlled furnace at 580°C for 4 h. Scanning electron microscope, X-ray diffraction examinations and hardness measurements were carried out after standard metallographic processes. Wear tests were performed in a pin on type wear apparatus under 30 N with 1 m s¯¹ sliding speed, at six different sliding distances (500-3000 m). Results show that the hardness was increased with increasing of amount of B₄C. At the end of wear tests the lowest weight loss were found to 9% B₄C containing composites. In addition, it is determined that the weight loss increased with increasing sliding distance.

Keywords

EN

81.40.Pq

Discipline

• 81.40.Pq: Friction, lubrication, and wear

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2016
• Volume: 129
• Issue: 4
• Pages: 565-568

Dates

published

2016-04

Contributors

author

H. Ay

• Karabük University, Technology Faculty, Department of Manufacturing Engineering, Karabuk, Turkey

author

D. Özyürek

• Karabük University, Technology Faculty, Department of Manufacturing Engineering, Karabuk, Turkey

author

M. Yıldırım

• Karabük University, Technology Faculty, Department of Manufacturing Engineering, Karabuk, Turkey

author

B. Bostan

• Gazi University, Technology Faculty, Department of Metallurgy and Materials Engineerig, Ankara, Turkey

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Identifiers

DOI

10.12693/APhysPolA.129.565