Tribological Behavior of the Ni3Al-based Composites/Gray Cast Iron Tribo-Pairs at High Temperatures

摘要：

　　Ni3Al-alloy and Cr3C2/Ni3Al composites were produced by the powder metallurgy technique in this work.The high temperature tribological behavior of the Ni3Al-alloy and Cr3C2/Ni3Al composites that grind with the gray cast iron was analyzed by the pin-on disk wear testing,and the worn surfaces morphologies of their were observed.The results indicated that the wear resistance of the Ni3Al-alloy and Cr3C2/Ni3Al composites was improved as the temperatures increased.This behavior mainly attributed to the following reasons: on one hand,the wear mechanisms of the Ni3Al-alloy and Cr3C2/Ni3Al composites transformed with increasing temperatures,on the other hand,the strength of the Ni3Al-alloy and Cr3C2/Ni3Al composites was increased with increasing temperatures due to the Ni3Al-based materials possess a positive temperature-dependence of strength.However,the strength of the counterpart gray cast iron was reduced as the temperatures increased.Therefore,the wear resistance of the counterpart gray cast iron was decreased with increasing temperatures.

关键词： Tribological behavior Ni3Al-alloy Cr3C2/Ni3Al composites Gray cast iron High temperatures

作者: Fu Lihua Han Wei Zhao Lin Gong Karin Bengtsson Sven Zhou Meng Li Changhai Tian Zhiling

作者单位: Central Iron and Steel Research Institute,Beijing 100081,China;Key Laboratory of Materials Tribology Central Iron and Steel Research Institute,Beijing 100081,China Department of Industrial and Materials Science,Chalmers University of Technology,Gothenburg SE-41296 H(o)gan(a)s AB,H(o)gan(a)s 26383,Sweden School of Material Science and Engineering,University of Science and Technology Beijing,Beijing 1000

会议类型: 国际会议

会议名称: 2018世界粉末冶金大会

会议地点: 北京

会议语种:英文

页码: 1078-1083

在线出版日期: 2018-09-16（万方平台首次上网日期，不代表论文的发表时间）