Influence of particulate reinforcement on microstructure evolution and tensile properties of in-situ polymer derived MMC by friction stir processing

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• 作者：Ajay Kumar P.^a ; ^{ajaykumarmech85@gmail.com} ; Devinder Yadav^a ; Chandra S. Perugu^b ; Satish V. Kailas^a
• 关键词：In-situ composite ; Grain refinement ; Microstructure ; Mechanical characterization ; Friction stir processing
• 刊名：Materials & Design
• 出版年：2017
• 出版时间：5 January 2017
• 年：2017
• 卷：113
• 期：Complete
• 页码：99-108
• 全文大小：3883 K
• 卷排序：113

文摘

Introduction of fine ceramic particles in the Cu matrix enhances the recrystallization kinetics during FSP. Nanosized ceramic particles effectively pin the grain boundaries and prevented the grain growth. Microstructure is characterized by equiaxed fine grains of 1–3 μm bounded by high angle grain boundaries. The composite exhibited 0.2% proof stress of 201 MPa, which is almost 2 times improvement compared to base Cu. The Kocks-Mecking plot of the composite showed stage III of work hardening.