Wear and friction behavior of austempered ductile iron as railway wheel material
Wear and friction behavior of austempered ductile iron as railway wheel material
复制标题
铁路车轮材料等温淬火球墨铸铁的磨损与摩擦行为
DOI：
10.1016/j.matdes.2015.10.037
复制
发表时间：
2016-01-05
影响因子：
8.4
通讯作者：
Song, Qingpeng
中科院分区：
文献类型：
--
作者：
Zhang, Ning;Zhang, Jiwang;Song, Qingpeng
将三种强度等级的等温淬火球墨铸铁（ADI）和一种车轮钢与常规钢轨钢相匹配，进行滚动滑动磨损试验。结果表明，随着基体硬度的增加，磨损率降低，摩擦系数增大。亚表面硬度的增加是由于加工硬化和残余奥氏体向马氏体的染色引起的转变。主要磨损机制是分层，并随着基体硬度的增加而变得轻微。 ADI在340℃下等温淬火显示出合理的摩擦磨损行为以及相对优越的机械性能。 (C) 2015 Elsevier Ltd. 保留所有权利。
Austempered ductile irons (ADIs) with three strength grades and one kind of wheel steel were matched with conventional rail steel and rolling-sliding wear tests were conducted. The results show that the wear rate decreases while the friction coefficient increases with the increase of matrix hardness. The increase of subsurface hardness is due to work-hardening and stain-induced transformation of retained austenite to martensite. The main wear mechanism is delamination and becomes mild with the increase of matrix hardness. ADI austempered at 340 degrees C shows the reasonable friction and wear behavior as well as relatively superior mechanical properties. (C) 2015 Elsevier Ltd. All rights reserved.