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| Properties of 3Cr2W8V Die Steel With Striations Processed by Laser |
| CHEN Li1,3,ZHOU Hong2,ZHANG Zhi��hui3,REN Lu��quan3 |
| 1. School of Materials Science and Engineering, Changchun University of Technology, Changchun 130012, Jilin, China;2. The Key Laboratory of Automobile Materials of the Ministry of Education, Jilin University, Changchun 130025, Jilin, China;3. The Key Laboratory for Terrain Machinery Bionics Engineering of the Ministry of Education, Jilin University, Changchun 130025, Jilin, China |
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Abstract The striations on the surface of 3Cr2W8V die steel were processed by laser. The microstructure, hardness, wear resistance and thermal fatigue behavior of the specimens processed by laser were measured. The appearance and mechanism of thermal fatigue crack propagation in the zone processed by laser were observed and discussed. The results show that the wear resistance and thermal fatigue resistance of materials processed by laser are all better than those of the unprocessed material. The processed zone by laser plays a role in baffling wearing process and crack propagation. The pile��nail effect of processed zone is the main factor for improving the wear resistance and thermal fatigue resistance of material.
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Received: 01 January 1900
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2009, Vol. 16 
