Effects of Cu on Wear Resistance of Ductile Cast Iron

Wang Zhi; Liu Dezhi; Huang Lei; Zhao Xingchuan; Huang Baoxu

doi:10.15980/j.tzzz.2020.05.007

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Effects of Cu on Wear Resistance of Ductile Cast Iron
Vol. 40, Issue 5, Pages: 492-497(2020)
Published： 2020 ，
DOI： 10.15980/j.tzzz.2020.05.007

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[1]王志,刘德志,黄蕾,赵性川,黄宝旭.Cu对球墨铸铁耐磨性能的影响[J].特种铸造及有色合金,2020,40(05):492-497.

Wang Zhi, Liu Dezhi, Huang Lei, et al. Effects of Cu on Wear Resistance of Ductile Cast Iron. [J]. Special Casting & Nonferrous Alloys 40(5):492-497(2020)
[1]王志,刘德志,黄蕾,赵性川,黄宝旭.Cu对球墨铸铁耐磨性能的影响[J].特种铸造及有色合金,2020,40(05):492-497. DOI： 10.15980/j.tzzz.2020.05.007.

Wang Zhi, Liu Dezhi, Huang Lei, et al. Effects of Cu on Wear Resistance of Ductile Cast Iron. [J]. Special Casting & Nonferrous Alloys 40(5):492-497(2020) DOI： 10.15980/j.tzzz.2020.05.007.

摘要

制备了不同Cu含量的球墨铸铁

采用拉伸试验机和布氏硬度计对球墨铸铁进行力学性能测试

采用往复摩擦磨损试验仪进行干摩擦试验

通过金相显微镜和扫描电镜对试样的微观结构进行表征

并探讨了Cu对球墨铸铁耐磨性能的影响。结果表明:Cu能有效提高球墨铸铁的耐磨性能。磨损机制以塑性变形为主

随着珠光体含量增加

磨粒磨损加剧。随着摩擦时间延长

疲劳磨损加剧;随着载荷增大

摩擦因数减小。

Abstract

The mechanical properties of ductile cast iron with different Cu addition were tested by tensile tester and Brinell hardness tester. The dry friction and wear experiments were carried out with the reciprocating friction and wear tester. The microstructure of the sample was characterized by metallographic microscope and scanning electron microscope. The effect of copper on the wear resistance of ductile cast iron was discussed. The results show that the copper can improve effectively the wear resistance of ductile cast iron. The main wear mechanism is characterized by plastic deformation

and with the increase of pearlite content

the abrasive wear becomes serious. With the increase of friction time

the fatigue wear is increased. In addition

the increase of load can reduce the friction coefficient of materials.