Fe-0.03Te-0.3Pb-0.9Mn易切削不锈钢润滑滚动磨损机理研究

doi:10.11868/j.issn.1001-4381.2015.10.014

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摘要

采用润滑滚动磨损实验测试Fe-0.03Te-0.3Pb-0.9Mn易切削不锈钢的表面摩擦磨损特性。比较不同磨损时间球珠作用下合金表面磨损形貌、体系硬度、摩擦因数和磨损体积的差异,并对其润滑滚动磨损机理进行深入研究。结果表明:磨损启动期,合金表面磨损性能相对稳定,在MnS和Pb等易切削相交互作用下,合金表面犁削底部开始产生裂纹;磨损稳定期,合金表面性能逐渐变化,犁削底部裂纹持续生长,交织的裂纹开始产生片状或块状凸起物;磨损失效期,合金表面润滑膜和剥落物大量脱落,剥落物形成磨料磨损,犁削逐渐贯通消失,合金表面体系相结构快速瓦解。

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	何银花
	王发展
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	王永嘉
	焦炜
	韩双宗

关键词 ： Fe-0.03Te-0.3Pb-0.9Mn合金, 微观组织, 润滑滚动磨损, 易切削不锈钢

Abstract：

The friction and wear characteristics of Fe-0.03Te-0.3Pb-0.9Mn free-cutting stainless steel were investigated using a lubricated rolling wear testing apparatus. The wear morphology, hardness, friction coefficient and wear volume of alloy surface were compared in different wear time, its mechanism of lubricated rolling wear was studied further. The results show that, at the beginning of wear, the performance of alloy surface wear is relatively stable, under the interaction of free-cutting phase, such as MnS and Pb, that cracks occur at the alloy surface plough bottom; When the wear is stable, the performance of alloy surface changed gradually, the cracks of plough bottom continue growing, interweaved cracks begin to generate flake or block convex parts; When the wear is over, the alloy surface lubrication film and exfoliation numerous are flaking off, exfoliation formed abrasive wear, plough disappeared step by step, the alloy surface system is collapsed rapidly.

Key words： Fe-0.03Te-0.3Pb-0.9Mn alloy microstructure lubricated rolling wear free-cutting stainless steel

收稿日期: 2014-07-22 出版日期: 2015-10-17

通讯作者: 王发展 E-mail: wangfz10_1@163.com

作者简介: 王发展(1966-),男,教授,博士生导师,主要从事易切削材料制备与摩擦磨损研究,联系地址:西安建筑科技大学材料与矿资学院(710055),E-mail: wangfz10_1@163.com

引用本文:

何银花, 王发展, 王哲, 王永嘉, 焦炜, 韩双宗. Fe-0.03Te-0.3Pb-0.9Mn易切削不锈钢润滑滚动磨损机理研究[J]. 材料工程, 2015, 43(10): 85-90.
Yin-hua HE, Fa-zhan WANG, Zhe WANG, Yong-jia WANG, Wei JIAO, Shuang-zong HAN. Lubricated Rolling Wear Mechanism Study on Fe-0.03Te-0.3Pb-0.9Mn Free-cutting Stainless Steel. Journal of Materials Engineering, 2015, 43(10): 85-90.

链接本文:

http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2015.10.014 或 http://jme.biam.ac.cn/CN/Y2015/V43/I10/85

Table 1 实验用钢的化学成分(质量分数/%)

Fig.1 润滑滚动磨损实验原理图

Fig.2 Fe-0.03Te-0.3Pb-0.9Mn合金的SEM图与能谱图
(a)横向截面;(b)纵向截面;(c)Pb能谱分析;(d)MnS能谱分析

Fig.3 Fe-0.03Te-0.3Pb-0.9Mn合金在不同润滑滚动磨损时间下的摩擦因数曲线

Fig.4 Fe-0.03Te-0.3Pb-0.9Mn合金润滑滚动磨损1h时表面SEM图
(a)横向截面；(b)纵向截面

Fig.5 Fe-0.03Te-0.3Pb-0.9Mn合金润滑滚动磨损2h时表面SEM图
(a)横向截面；(b)纵向截面

Fig.6 Fe-0.03Te-0.3Pb-0.9Mn合金润滑滚动磨损3h表面SEM图
(a)横向截面；(b)纵向截面

Fig.7 Fe-0.03Te-0.3Pb-0.9Mn合金硬度和磨损体积随润滑滚动磨损时间变化的曲线
(a)横向截面；(b)纵向截面

Fig.8 Fe-0.03Te-0.3Pb-0.9Mn润滑滚动磨损机理示意图

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