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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%.
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 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%.