Tiewei Xu , Jianyi Li , Yuan Yu , Tongyang Li , Lujie Wang , Huaguo Tang , Zhuhui Qiao
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引用次数: 0
Abstract
The iron-based high-entropy alloys are poised to become the next generation of high-temperature materials due to their outstanding mechanical properties and cost-effectiveness. In this work, the microstructure, mechanical properties, and tribological behaviors of Fe50Mn25Cr5Al15Ti5 iron-based high-entropy alloys are investigated. The grain morphology of Fe50Mn25Cr5Al15Ti5 alloy is equiaxed and dominated by BCC structure. Fe50Mn25Cr5Al15Ti5 alloy has higher hardness, better resistance to high-temperature softening and superior wear resistance than Hadfield steel (40Mn18Cr3). Within 800 °C, wear rate remains a low order of 10−5 mm3/N·m. At RT, abrasive wear is the dominant mechanism. At 400 °C, non-dense oxide layer containing unoxidized metal is formed, resulting in delamination, adhesion and abrasion. At 800 °C, a dense wear-resistant oxide glaze layer covers the wear surface.
期刊介绍:
Tribology is the science of rubbing surfaces and contributes to every facet of our everyday life, from live cell friction to engine lubrication and seismology. As such tribology is truly multidisciplinary and this extraordinary breadth of scientific interest is reflected in the scope of Tribology International.
Tribology International seeks to publish original research papers of the highest scientific quality to provide an archival resource for scientists from all backgrounds. Written contributions are invited reporting experimental and modelling studies both in established areas of tribology and emerging fields. Scientific topics include the physics or chemistry of tribo-surfaces, bio-tribology, surface engineering and materials, contact mechanics, nano-tribology, lubricants and hydrodynamic lubrication.