Understanding the Effect of Ni on Mechanical and Wear Properties of Low-Carbon Steel from a View-Point of Electron Work Function

作者：Lu, Hao; Huang, Xiaochen; Hou, Runfang; Li, D. Y.^*

来源：Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science, 2018, 49A(7): 2612-2621.

DOI：10.1007/s11661-018-4616-1

• EROSION RESISTANCE
• PARTICLE-SIZE
• MICROSTRUCTURE
• CU
• BEHAVIOR
• FRICTION
• ADHESION
• ELEMENTS
• METALS
• ALLOY

Electron work EWF) is correlated to intrinsic properties of metallic materials and can be an alternative parameter to obtain supplementary clues for guiding material design and modification. A higher EWF corresponds to a more stable electronic state, leading to higher resistance to any attempt to change the material structure and properties. In this study, effects of Ni as a solute with a higher EWF on mechanical, electrochemical, and tribological properties of low-carbon steel were investigated. Added Ni, which has more valence electrons, enhanced the electrons-nuclei interaction in the steel, corresponding to higher EWF. As a result, the Ni-added steel showed increased mechanical strength and corrosion resistance, resulting in higher resistances to wear and corrosive wear. Mechanism for the improvements is elucidated through analyzing EWF-related variations in Young's modulus, hardness, corrosion potential, and tribological behavior.

• 出版日期2018-7
• 单位北京工业大学; 航天材料及工艺研究所