Rolling-sliding wear of austempered ductile iron with different strength grades
Rolling-sliding wear of austempered ductile iron with different strength grades
复制标题
不同强度等级等温淬火球墨铸铁的滚动滑动磨损
DOI：
10.1016/j.wear.2014.06.015
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发表时间：
2014-10
期刊：
影响因子：
5
通讯作者：
Lu, Liantao
中科院分区：
文献类型：
--
作者：
Zhang, Mintang;Zeng, Dongfang;Song, Qingpeng;Lu, Liantao
将三种强度等级的奥贝球铁与高碳铬轴承钢进行了匹配，并在Amsler型摩擦试验机上进行了高接触载荷下的滚动滑动磨损试验。试验过程中，接触面用0.6 MPa的干燥压缩空气冷却，防止表面被加热氧化。研究了这些摩擦副的磨损性能和行为。结果表明：复合材料的磨损机制为脱层，随着材料硬度的增加，复合材料的脱层逐渐变轻；随着材料硬度的增加，试样的摩擦系数增大，且试样的表面显微硬度因马氏体相变而显著提高。3个强度等级的ADIs磨损率无明显差异，磨损率受材料硬度和摩擦系数的共同影响。
Austempered ductile irons (ADIs) with three strength grades were matched with high-carbon–chromium bearing steel and the rolling–sliding wear tests under high contact load were conducted on an Amsler type tribotester. During tests the contact surface was cooled by dry compressed air of 0.6 MPa to prevent the surface oxidation by heating. The wear properties and behaviors of these friction pairs were investigated. The results show that the wear mechanism is delamination and the delamination of ADIs becomes mild with the increase of material hardness. The friction coefficient of the test pairs increases with the increase of material hardness and the surface microhardnesses of ADIs increase greatly during the tests due to the martensite transformation. The wear rates of three strength grades of ADIs show no obvious difference and the wear rates are influenced by both the material hardness and the friction coefficient.
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影响因子：
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