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Doctoral Thesis | Material Science | Turkey | Volume 12 Issue 4, April 2023 | Popularity: 5.4 / 10
The Effect of Rolling Temperature and Rolling Ratio on Hardness and TRS Boron Carbide 15% (B4C) Reinforcement Copper Matrix Composite
Ozkan ESKI, Hasan ALSead Ibrahim ENBIA
Abstract: Copper is one of the most commonly used metal for industrial purposes due to high thermal and electrical conductivity, ductility etc. but it has poor abrasion resistance. For improving these poor properties scientific researches goes on. Reinforcing by adding ceramics as a reinforcement material like S?C, B4C is a commonly used method for better mechanical properties. Copper powders mixed with ceramic particles hot pressed or cold pressed then sintered to achieve high hardness and good resistance for abrasion wear. In this study 15% wt. boroncarbide, 90 ?m grain size, added copper powder mixed mechanically then cold pressed under 15 MPa and sintered at 850 ?C in argon atmosphere for 120 minutes. Metal matrix composites hot rolled at three different rolling temperature (600 ?C, 700 ?C and 800 ?C) and four rolling ratio (10%, 20%, 30% and 40%). Mechanical properties like hardness and Transverse Rupture Strength (TRS) of composites measured, compared depending on rolling temperature and rolling ratio. SEM and EDS applied for microstructural analysis; it is found that distribution of B4C is uniform. Rolling at 600 ?C increased both hardness and TRS for all rolling ratio.
Keywords: Powder metallurgy, B4C, Hot Rolling, Cold Pressing
Edition: Volume 12 Issue 4, April 2023
Pages: 1724 - 1730
DOI: https://www.doi.org/10.21275/SR23430113741
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