Materials Reports  2020, Vol. 34 Issue (Z2): 407-411 |
| METALS AND METAL MATRIX COMPOSITES |
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| Impact Abrasive Wear Behaviors of Quenched 40Cr Steel |
| CHEN Zhikai1,2, GUAN Tingting1, LI Qiang1, WANG Jing1,2, YUN Xiao1
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1 Jiangsu Xuzhou Construction Machinery Research Institute, Xuzhou Construction Machinery Group, Xuzhou 221004, China
2 State Key Laboratory of Intelligent Manufacturing of Advanced Construction Machinery, Xuzhou 221004, China |
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Abstract In present paper, to attain the high surface service properties, laser quench technical was used to improve the impact abrasive wear resis-tance of 40Cr. According to the results, because of the rapidly heating and cooling rate of laser quench, the phase transformation was correspondingly taken place, which made the obvious difference between original and quenched 40Cr microstructure. Additionally, the phase compo-site of quenched sample was significantly various in depth. The impact abrasive wear resistance of quenched sample and matrix was experimentally investigated and the improved level was assessed in light of the average mass loss of three repetitive tests. Worn surface was detected by means of SEM, OM and EDS, and indicated the behaviors of quenched and original sample. The results showed that three typical failure modes were performed during the processing of impact abrasive wear, including abrasive wear, impact effect and rolling contact fatigue. Basing on the different worn surface profile, the abrasive wear was the mainly failure mode for original sample, while impact effect and rolling contact fatigue predominated the failure for quenched sample.
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Published: 08 January 2021
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| Fund:This work was supported by the National Key R & D Projects (2019YFB2005300, 2018YFB1105805). |
| About author:: Zhikai Chen, born in 1988, doctor degree. As an engineer of XCMG, the main research field is the reinforcement treatment of metal surface, additive manufacture, heat treatment, remanufacture, etc. |
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