| METALS AND METAL MATRIX COMPOSITES |
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| Evolution of Tribological Characteristics of TC4 Alloy in Fretting Wear Partial Slip Regime |
| HE Yanni1, YU Shurong1,*, LI Shuxin2, CHEN Qiang1
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1 School of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, China
2 School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China |
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Abstract Three kinds of hardness counter-bodies(HV680GCr15,HV1500Si3N4 and HV2300Al2O3) were selected as variables to study the evolution of tribological characteristics of TC4 titanium alloy in fretting partial slip regime at room and elevated temperatures. The test results showed that under the three pairs, fretting wear of TC4 alloy were in the typical partial slip region at room and elevated temperature, and no transition to other two regions occurred. The tribological characteristics in partial slip regime were affected by the hardness of counter-bodies significantly: the effect on the degradation of worn surface was the most critical, the morphologies of worn scars were varied from a clearly distinguishable adhesive and slightly slippery zone to a circular intersection with severe plastic deformation generated newly; the profiles were transformed from a concave-convex peak curve to a regular “U”-shape with a sharp center and rough edges. The influence on damage mechanisms was minor, gradually transitions from adhesive to oxidation and adhesive wear. The effect on coefficient of friction was almost negligible, the curve evolved regularly, and the stability values was basically the same.
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Published: 03 August 2021
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| Fund:National Natural Science Foundation of China(51275225). |
About author:: Yanni He received her B.E. degree in Process Equipment and Control Engineering from Ningxia University in Sep.2004—Jan.2008 and M.E. degree in Safety Technology and Engineering from the Lanzhou University of Technology (LUT) in Sep.2009—Jan.2012. She has been pursuing the Ph.D. degree in Process Reliability and Risk Assessment Technology in the field of Chemical Process Machinery from the LUT till now. She has published 2 journal papers at the period of master. In addition, she acquired the award of Excellent Graduate of LUT and the mainly focused on the damage of aeroengine blade material, carried out research on fretting wear and fatigue of TC4 titanium alloy, and participated in the publication of 5 papers.
Shurong Yu obtained his Ph.D.degree from the Lanzhou University of Technology (LUT) and served in School of Petrochemical Engineering, LUT. Now he is a professor and doctoral supervisor, the Standing Committee Member and Vice President of LUT and the first-level talents in Gansu Province. He is also a reviewer of several academic journals such as Chemical Machinery, Fluid Machinery, Petrochemical Equipment, Petrochemical Technology and Application, Pipeline Technology and Equipment and Journal of LUT. He has presided over 1 project and participated in 4 National Natural Science.Foundation projects, and presided over the completion of more than 60 provincial and ministerial-level scientific research projects and corporate technical problems.He has published more than 100 research papers and editor-in-chief of 5 monographs. |
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2021, Vol. 35 
