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The Effect of the Strain Rate on the Fretting Wear Properties of Thermally Compressed Inconel 625 Alloy
Author(s) -
Jia Zhi,
Wang Yanjiang,
Ji Jinjin,
Sun Xuan,
Wei Baolin
Publication year - 2020
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.202000437
Subject(s) - materials science , fretting , inconel , microstructure , inconel 625 , metallurgy , strain rate , grain size , alloy , deformation (meteorology) , indentation hardness , composite material
The strain rate during the thermal deformation process has a decisive effect on the performance of the material. Herein, Inconel 625 alloy is subjected to thermal compression at different strain rates to obtain fretting wear samples with different microstructures. The effects of the recrystallized grain morphologies, textures, and microhardness values on the fretting wear resistance of thermally compressed Inconel 625 are studied. The results demonstrate that the thermally compressed Inconel 625 alloy underwent severe oxidation reactions during fretting wear, mainly Fe oxides. At an equal temperature, as the strain rate of thermal compression increases, the friction coefficient and wear volume are found to first decrease and then increase. When the strain rates during thermal compression are 0.1 and 1 s −1 , the workpiece is in a relatively fine recrystallized grain form without texture and with high hardness. At this time, the thermally compressed Inconel 625 has a low friction coefficient, a small volume of wear, and a large number of oxides on its surface. Therefore, the thermal deformation microstructure has a great influence on the wear resistance. Improvement in the fretting wear resistance of the workpiece by adjusting the strain rate during the thermal deformation process is proposed.