Properties of 3Cr2W8V Die Steel With Striations Processed by Laser

钢铁研究学报(英文版), 2009, 16(4): 39-43.

^1, , ^2, , ^3, , ^4,

1.School of Materials Science and Engineering, Changchun University of Technology, Changchun 130012,Jilin, China;The Key Laboratory for Terrain Machinery Bionics Engineering of the Ministry of Education, Jilin University, Changchun 130025, 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

4.The Key Laboratory for Terrain Machinery Bionics Engineering of the Ministry of Education, Jilin University, Changchun 130025, Jilin, China

基金项目: 国家自然科学基金(50635030)

Properties of 3Cr2W8V Die Steel With Striations Processed by Laser

CHEN Li ^1, , ZHOU Hong ^2, , ZHANG Zhi-hui ^3, , REN Lu-quan ^4,

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

4.The Key Laboratory for Terrain Machinery Bionics Engineering of the Ministry of Education, Jilin University, Changchun 130025, Jilin, China

Keywords： laser processing

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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Properties of 3Cr2W8V Die Steel With Striations Processed by Laser

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