Effects of Different Modification Process on the Wear and Frictional Behavior of Al-30Si Alloy

Yang Xiaobao; Lin Youxi; Wang Liandeng; Cao Haichun; Chen Longguang; Zhao Qijian

doi:10.15980/j.tzzz.2014.04.033

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Effects of Different Modification Process on the Wear and Frictional Behavior of Al-30Si Alloy
Vol. 34, Issue 4, Pages: 445-448(2014)
Published： 2014 ，
DOI： 10.15980/j.tzzz.2014.04.033

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[1]杨小宝,林有希,王连登,曹海春,陈龙光,赵其健.变质工艺对Al-30Si合金摩擦磨损性能的影响[J].特种铸造及有色合金,2014,34(04):445-448.

Yang Xiaobao, Lin Youxi, Wang Liandeng, et al. Effects of Different Modification Process on the Wear and Frictional Behavior of Al-30Si Alloy. [J]. Special Casting & Nonferrous Alloys 34(4):445-448(2014)
[1]杨小宝,林有希,王连登,曹海春,陈龙光,赵其健.变质工艺对Al-30Si合金摩擦磨损性能的影响[J].特种铸造及有色合金,2014,34(04):445-448. DOI： 10.15980/j.tzzz.2014.04.033.

Yang Xiaobao, Lin Youxi, Wang Liandeng, et al. Effects of Different Modification Process on the Wear and Frictional Behavior of Al-30Si Alloy. [J]. Special Casting & Nonferrous Alloys 34(4):445-448(2014) DOI： 10.15980/j.tzzz.2014.04.033.

摘要

采用内冷变质法和复合变质法（内冷变质和细化剂变质）对Al-30Si制动盘进行变质处理

在观察显微组织的基础上对其进行了摩擦磨损试验

研究了不同变质工艺以及不同制动速度、制动压力对其摩擦磨损的影响

并对摩擦磨损机理进行了探讨。结果表明

变质处理后的Al-30Si中初晶Si平均尺寸越小

耐磨性越好。复合变质处理的Al-30Si制动盘适合在3 000r/min的制动速度与0.5

.0MPa的制动压力下使用。变质处理后的Al-30Si存在大量的细小硬质点

主要表现为磨粒磨损。

Abstract

The Al-30Si brake disc was modified with internal cooling mechanical stirring method and compound modification treatment（internal cooling modification combining with refiner modification）.Friction and wear resistance test of Al-30Si brake disc were conducted based on the observation of microstructures.Effects of different modification processes and brake speed

brake pressure on the friction and wear resistance of Al-30Si were investigated

and the wear mechanism was described.The experimental results show that wear resistance of the alloy is improved with decreasing in the average grain size of primary silicon after modification treatment.The compound modified Al-30Si brake disc is suitable for the high-speed braking speed at 3000r/min and the brake pressure of 0.5

MPa.The wear mechanism of the modified Al-30Si is characterized by abrasive wear with the amount of fine hard spot distributed in the microstructure.