Thermal Cycling Effect on the Wear Resistance of Bionic Laser Processed Gray Iron

• Published in: Journal of bionics engineering 2014-04, Vol.11 (2), p.288-295
• Main Authors: Zhou, Hong, Zhang, Peng, Zhang, Zhihui, Qiu, Wenjun, Liu, Yan, Ren, Luquan
• Format: Article
• Language: English
• Subjects: Artificial Intelligence; Biochemical Engineering; Bioinformatics; Biomaterials; Biomedical Engineering and Bioengineering; Biomedical Engineering/Biotechnology; bionic; Bionics; Engineering; Gray iron; laser; Laser processing; Oxidation; Performance enhancement; Thermal fatigue; Wear; Wear resistance; 仿生; 效果处理; 激光加工; 灰铸铁; 热循环; 热疲劳性能; 磨损试验; 耐磨性
• ISSN: 1672-6529; 2543-2141
• DOI: 10.1016/S1672-6529(14)60031-7

Thermal fatigue and wear both seriously affect the service life of some working parts. Environmental temperature will modify the surface conditions and influences the result of wear. In this research, to come close to working conditions, specimens were tested by a combination of thermal cycles and wear. Different cycles of thermal fatigue was carried out first on the gray iron specimens and subsequently wear test was performed to evaluate the effect of these thermal fatigue cycles. In this case, bionic laser processing was used to enhance the wear performance. The results indicated that bionic laser processing reduces the negative effects from thermal fatigue, such as grain fragmentation and oxidation. Because the initiation and growth of cracks as well as oxidation are suppressed in bionic processed areas. Bionic specimens exhibit high wear resistance compared with the common one. The process described can be considered as an effective method to improve the performance of gray iron in combined thermal fatigue and wear service conditions.