Effect of contact pressure on multiaxial fretting fatigue behavior of Al-Zn-Mg alloy

Tingfeng Song; Xiaosong Jiang; Jiaxin Jiang; Degui Zhu

doi:10.3139/120.111062

Article

Effect of contact pressure on multiaxial fretting fatigue behavior of Al-Zn-Mg alloy

Tingfeng Song , Xiaosong Jiang , Jiaxin Jiang and Degui Zhu

Published/Copyright: August 28, 2017

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From the journal Materials Testing Volume 59 Issue 9

Abstract

This research investigates effects of contact pressure on multiaxial fretting fatigue behavior of Al-Zn-Mg alloy which has a wide variety of applications in automobile and rail transit engineering. Al-Zn-Mg alloy is exposed to cyclic loadings and contact pressure. The cyclic stress-strain curve and displacement amplitude curve under different contact pressure of Al-Zn-Mg alloy were investigated using point contact multiaxial fretting fatigue test equipment. Based on cyclic stress-strain curve and displacement amplitude curve under different contact pressure, fretting wear characteristics, fretting fatigue fracture properties and fretting fatigue lives as well as the effects of contact pressure on multiaxial fretting fatigue damage and fretting fatigue fracture mechanisms of Al-Zn-Mg alloy were extensively analyzed.

Kurzfassung

In der diesem Beitrag zugrunde liegenden Forschungsarbeit wurden die Auswirkungen des Kontaktdruckes auf das multiaxiale Schwingverschleißverhalten einer Al-Zn-Mg-Legierung untersucht, die breite Anwendung im Automobil- und Schienenfahrzeugbau findet. Die Al-Zn-Mg-Legierung wurde einer zyklischen Belastung und entsprechendem Kontaktdruck ausgesetzt. Es wurde die zyklische Spannungs-Dehnungs-Kurve der Al-Zn-Mg-Legierung unter verschiedenen Kontaktdrücken untersucht, indem eine Schwingverschleiß-Versuchseinrichtung mit Punktkontakt verwendet wurde. Basierend auf der zyklischen Spannungs-Dehnungs-Kurve und der Verschiebungs-Amplituden-Kurve bei verschiedenen Kontaktdrücken wurden die Charakteristika, die Brucheigenschaften und die Lebensdauer sowie die Auswirkungen des Kontaktdruckes auf die multiaxiale Schädigung durch Schwingverschleiß und die Schwingverschleißbruchmechanismen der Al-Zn-Mg-Legierung ausgiebig analysiert.

*Correspondence Address, Assoc. Prof. Dr. Xiaosong Jiang, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, P.R. China, E-mail: xsjiang@yeah.net, xsjiang@home.swjtu.edu.cn

Tingfeng Song, born in 1993, graduated in Materials Science and Engineering at Southwest Jiaotong University, Chengdu, China in 2015. He is a Master of Science student in Materials Science and Engineering at the same university and doing research onwelding, fatigue and wear resistance.

Dr. Xiaosong Jiang, born in 1979, graduated with a Bachelor degree in Powder Metallurgy from Central South University, Changsha, China in 2002. He completed his Master of Science in Materials Physics and Chemistry at Southwest Jiaotong University, Chengdu, China in 2007. Then, in 2011, he completed his PhD degree at Tongji University, Shanghai, China. His main research fields are powder metallurgy, welding and fretting fatigue.

Assist. Prof. Jiaxin Jiang, born in 1987, graduated with Bachelor and Master degree in Mechanical Engineering from Shanghai University, Shanghai, China in 2008 and 2011, respectively. She is Assistant Professor at Chengdu Textile College, Chengdu, China. Her main research fields are fatigue and wear resistance.

Assoc. Prof. Dr. Degui Zhu, born in 1965, graduated with a Bachelor, Master and PhD degree in Materials Science and Engineering from Southwest Jiaotong University, Chengdu, China in 1986,1989 and 2013, respectively. He is Associate Professor at the same university. His main research fields are powder metallurgy, welding, ceramics and fatigue.

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Published Online: 2017-08-28

Published in Print: 2017-09-01

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https://doi.org/10.3139/120.111062