Microstructural Characterization and Mechanical Properties of VB2/A390 Composite Alloy
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2015年第10期
论文作者：Xiaoli Cui Yuying Wu Xiangfa Liu
文章页码：1027 - 1033
摘 要：In this work, we make the best use of the vanadium element; a series of Al–V–B alloys and VB2/A390 composite alloys were fabricated. For Al–10V–6B alloy, the grain size of VB2 can be controlled within about 1 μm and is distributed uniformly in the Al matrix. Further, it can be found that VB2 promises to be a useful reinforcement particle for piston alloy. The addition of VB2 can improve the mechanical properties of the A390 composite alloys significantly. The results show that with 1% VB2 addition, A390 composite alloy exhibits the best performance. Compared with the A390 alloy, the coefficient of thermal expansion is 13.2 × 10-6K-1, which decreased by 12.6%; the average Brinell hardness can reach 156.5 HB, wear weight loss decreased by 28.9% and ultimate tensile strength at 25 °C（UTS25 °C） can reach 355 MPa, which increased by 36.5%.
Xiaoli Cui，Yuying Wu，Xiangfa Liu
Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials,Ministry of Education,Shandong University
摘 要：In this work, we make the best use of the vanadium element; a series of Al–V–B alloys and VB2/A390 composite alloys were fabricated. For Al–10V–6B alloy, the grain size of VB2 can be controlled within about 1 μm and is distributed uniformly in the Al matrix. Further, it can be found that VB2 promises to be a useful reinforcement particle for piston alloy. The addition of VB2 can improve the mechanical properties of the A390 composite alloys significantly. The results show that with 1% VB2 addition, A390 composite alloy exhibits the best performance. Compared with the A390 alloy, the coefficient of thermal expansion is 13.2 × 10-6K-1, which decreased by 12.6%; the average Brinell hardness can reach 156.5 HB, wear weight loss decreased by 28.9% and ultimate tensile strength at 25 °C（UTS25 °C） can reach 355 MPa, which increased by 36.5%.
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