Fatigue life of micro-arc oxidation coated AA2024-T3 and AA7075-T6 alloys
作者： Weibing Dai , Zhenhua Liu , Changyou Li , David He , Dawei Jia
DOI: 10.1016/J.IJFATIGUE.2019.03.028
关键词:
摘要: Abstract Two types of aluminum (Al) alloys, namely 2024-T3 and 7075-T6, were treated by micro-arc oxidation (MAO). Microstructure as-fabricated ceramic coatings was investigated. Furthermore, the effect MAO time on fatigue life coated samples with thin coating systematically explored. Morphologies coating, second phase particles, distribution copper (Cu) Zinc (Zn) in observed scanning electron microscopy, confocal laser energy dispersive spectrometry. Residual stress compositions analyzed X-ray diffraction. More Cu Al alloy promoted formation coating; however, surface porosity high. induced deposited AA2024 compressive nature. In contrast, residual prepared AA7075 tensile due to high content Zn substrate. The results test showed that increased; treatment detrimental performance compared uncoated samples. With prolonging time, first increased then decreased. changes attributed stress, defects including micro-pores micro-cracks, particles
sci-hub.se 参考文章(60)
M. Reihanian, M. Jalili Shahmansouri, M. Khorasanian, High strength Al with uniformly distributed Al2O3 fragments fabricated by accumulative roll bonding and plasma electrolytic oxidation Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 640, pp. 195- 199 ,(2015) , 10.1016/J.MSEA.2015.05.104
Kong Dejun, Liu Hao, Wang Jinchun, Effects of micro arc oxidation on fatigue limits and fracture morphologies of 7475 high strength aluminum alloy Journal of Alloys and Compounds. ,vol. 650, pp. 393- 398 ,(2015) , 10.1016/J.JALLCOM.2015.07.262
T. Arunnellaiappan, N. Kishore Babu, L. Rama Krishna, N. Rameshbabu, Influence of frequency and duty cycle on microstructure of plasma electrolytic oxidized AA7075 and the correlation to its corrosion behavior Surface & Coatings Technology. ,vol. 280, pp. 136- 147 ,(2015) , 10.1016/J.SURFCOAT.2015.08.043
YM Wang, FH Wang, MJ Xu, B Zhao, LX Guo, JH Ouyang, None, Microstructure and corrosion behavior of coated AZ91 alloy by microarc oxidation for biomedical application Applied Surface Science. ,vol. 255, pp. 9124- 9131 ,(2009) , 10.1016/J.APSUSC.2009.06.116
K. Tillous, T. Toll-Duchanoy, E. Bauer-Grosse, L. Hericher, G. Geandier, Microstructure and phase composition of microarc oxidation surface layers formed on aluminium and its alloys 2214-T6 and 7050-T74 Surface & Coatings Technology. ,vol. 203, pp. 2969- 2973 ,(2009) , 10.1016/J.SURFCOAT.2009.03.021
I. Apachitei, B. Lonyuk, L.E. Fratila-Apachitei, J. Zhou, J. Duszczyk, Fatigue response of porous coated titanium biomedical alloys Scripta Materialia. ,vol. 61, pp. 113- 116 ,(2009) , 10.1016/J.SCRIPTAMAT.2009.03.017
Tongbo Wei, Fengyuan Yan, Jun Tian, Characterization and wear- and corrosion-resistance of microarc oxidation ceramic coatings on aluminum alloy Journal of Alloys and Compounds. ,vol. 389, pp. 169- 176 ,(2005) , 10.1016/J.JALLCOM.2004.05.084
Y.L. Cheng, Z. Zhang, F.H. Cao, J.F. Li, J.Q. Zhang, J.M. Wang, C.N. Cao, A study of the corrosion of aluminum alloy 2024-T3 under thin electrolyte layers Corrosion Science. ,vol. 46, pp. 1649- 1667 ,(2004) , 10.1016/J.CORSCI.2003.10.005
Xi-Shu Wang, Xing-Wu Guo, Xu-Dong Li, Dong-Yun Ge, Improvement on the Fatigue Performance of 2024-T4 Alloy by Synergistic Coating Technology Materials. ,vol. 7, pp. 3533- 3546 ,(2014) , 10.3390/MA7053533
H.F. Guo, M.Z. An, Growth of ceramic coatings on AZ91D magnesium alloys by micro-arc oxidation in aluminate–fluoride solutions and evaluation of corrosion resistance Applied Surface Science. ,vol. 246, pp. 229- 238 ,(2005) , 10.1016/J.APSUSC.2004.11.031