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此外还有过共晶铝合金气缸材料。There is also the hypereutectic aluminum alloy material for cylinders.

而使高硅铝合金充分发挥实用价值的关键是细化初晶硅。The value of hypereutectic Al Si alloys is their fine primary silicon particles.

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合金为过共晶成分时碳化钒均匀分布。When the alloys are hypereutectic alloys, the vanadium carbides are even distribution.

测试结果表明熔敷金属为过共晶组织。The microscopic analysis results indicate that deposited metal is hypereutectic structure.

本发明的变质精炼剂是一种绿色、长效、双重和复合的过共晶铝硅合金变质精炼剂。It is a green, long-effective and composite hypereutectic alusil alloy modified refining agent.

通过自制的双筒旋转粘度计对过共晶ZL117合金的表观粘度进行了研究。We have developed a contour rotary viscometer to investigate steady apparent viscosity of hypereutectic ZL117 alloy.

将铝硅过共晶合金凝固过程中析出的初生硅颗粒视为夹杂物颗粒。The primary silicon particles precipitating from the solidification of Al-Si hypereutectic alloy was regarded as inclusions.

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过共晶铝硅合金以其密度小、热膨胀系数低、耐磨性及体积稳定性好等优点而成为理想的活塞材料。As an important cast alloy, hypereutectic Al-Si alloy has low expansion coefficient and density, good cast performance and wear resistance.

研究了半固态过共晶高铬铸铁坯料部分重熔保温过程中初生碳化物的演变规律。Primary carbide microstructure evolution in the semi-solid hypereutectic high Cr cast iron has been studied at partial remelting temperature.

脉冲电压的升高和脉冲频率的增大都有利于过共晶灰口铸铁凝固组织的细化和改善。The Increase of pulse voltage and pulse frequency is beneficial to refinement and improvement of solidification structure of hypereutectic gray cast Iron.

采用磷、硫、稀土、锶、钠、碳等进行双重细化变质处理过共晶铝硅合金已取得了良好的效果。The good effect has been gained on the hypereutectic Al Si alloys treated with some double refining and modifying agents such as P, S, RE, Sr, Na, C, etc.

过共晶铝硅合金具有低密度、良好的热稳定性和高耐磨性，是一种理想的耐磨耐热材料。Hypereutectic Al-Si alloy with the quality of low density, good heat stability and high wear-resistance, is an ideal wear-resistant and heat-resistant material.

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过共晶铝硅合金比重小、热膨胀系数低、耐磨性和体积稳定性好，是理想的活塞材料。Hypereutectic Al-Si alloy which has small proportion, low coefficient of thermal expansion, good wear resistance and dimensional stability is an ideal piston material.

在薄壁铸件中获得无游离渗碳体和铁素体基体的稀土球铁的关键是高碳过共晶原铁水。Therefore, in thin section castings, for eliminating eutectic carbides and obtaining ferritic matrix, melts treated by RE need high carbon content and hypereutectic composition.