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Effects of Cryogenic Forging and Anodization on the Mechanical Properties of AA 7075-T73 Aluminum Alloys

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Abstract

In this study, high-strength AA7075 alloy samples were cryogenically forged after annealing and then subjected to solution and aging treatments. The cryogenically forged 7075-T73 alloy samples displayed equiaxed fine grains associated with abundant fine precipitates in their matrix. Compared with conventional 7075-T73 alloy samples, the cryogenically forged samples exhibited an 8-12% reduction in tensile strength and an increased fatigue strength and higher corrosion resistance. The fatigue strength measured at 107 cycles was 225 MPa in the bare samples; the strength was increased to 250 MPa in the cryogenically forged samples. The effect of anodization on the corrosion resistance of the bare samples was improved from (E corr) −0.80 to −0.61 V.

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References

  1. Y.S. Huang, T.S. Shih, and J.H. Chou, Electrochemical Behavior of Anodized AA7075-T73 Alloys Affected by Matrix Structures, Appl. Surf. Sci., 2013, 283, p 249–257

    Article  Google Scholar 

  2. K. Golpala Krishna, K. Sivaprasad, K. Venkateswarlu, and K.C. Hari Kumar, Microstructural Evolution and Aging Behavior of Cryorolled Al-4Zn-2Mg Alloy, Mater. Sci. Eng. A Struct., 2012, 535, p 129–135

    Article  Google Scholar 

  3. P. Das, R. Jayaganthan, and I.V. Singh, Tensile and Impact-Toughness Behaviour of Cryorolled Al 7075 Alloy, Mater. Des., 2011, 32, p 1298–1305

    Article  Google Scholar 

  4. S.K. Panigrahi and R. Jayaganthan, Development of Ultrafine Grained High Strength Age Hardenable Al 7075 Alloy by Cryorolling, Mater. Des., 2011, 32, p 3150–3160

    Article  Google Scholar 

  5. S.K. Panigrahi and R. Jayaganthan, Effect of Ageing on Microstructure and Mechanical Properties of Bulk, Cryorolled, and Room Temperature Rolled Al 7075 Alloy, J. Alloy Compd., 2011, 509, p 9609–9616

    Article  Google Scholar 

  6. J. Yin, J. Lu, H. Ma, and P. Zhang, Nanostructural Formation of Fine Grained Aluminum Alloy by Severe Plastic Deformation at Cryogenic Temperature, J. Mater. Sci., 2004, 39, p 2851–2854

    Article  Google Scholar 

  7. T.S. Shih, T.H. Lee, and Y.J. Jhou, The Effects of Anodization Treatment on the Microstructure and Fatigue Behavior of 7075-T73 Aluminum Alloy, Mater. Trans., 2014, 55, p 1280–1285

    Article  Google Scholar 

  8. E. Cirik and K. Genel, Effect of Anodic Oxidation on Fatigue Performance of 7075-T6 Alloy, Surf. Coat. Technol., 2008, 202, p 5190–5201

    Article  Google Scholar 

  9. M. Shahzad, M. Chaussumier, R. Chieragatti, F. Rezai-Aria, and C. Mabru, Influence of Surface Treatments on Fatigue Life of Al 7010 Alloy, J. Mater. Process Technol., 2010, 13, p 1821–1826

    Article  Google Scholar 

  10. M. Chaussumier, C. Mabru, M. Shahzad, R. Chieragatti, and F. Rezai-Aria, A predictive Fatigue Life Model for Anodized 7050 Aluminium Alloy, Int. J. Fatigue, 2013, 48, p 205–213

    Article  Google Scholar 

  11. P.N. Adler, R. Delasi, and G. Geschwind, Influence of Microstructure on the Mechanical, Metall. Trans., 1972, 3, p 3191–3200

    Article  Google Scholar 

  12. F. Viana, A.M.P. Pinto, H.M.C. Santos, and A.B. Lopes, Retrogression and Re-Ageing of 7075 Aluminium Alloy: Microstructural Characterization, J. Mater. Process Technol., 1999, 92–93, p 54–59

    Article  Google Scholar 

  13. S.P. Knight, N. Birbilis, B.C. Muddle, A.R. Trueman, and S.P. Lynch, Correlations Between Intergranular Stress Corrosion Cracking, Grain-Boundary Microchemistry, and Grain-Boundary Electrochemistry for Al-Zn-Mg-Cu Alloys, Corros. Sci., 2010, 52, p 4073–4080

    Article  Google Scholar 

  14. American Society for Testing and Materials, Standard Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products, ASTM B557–10, American Society for Testing and Materials, West Conshohocken, 2014

    Google Scholar 

  15. Japanese Industrial Standard Committee, Method of Rotating Bending Fatigue Testing of Metals, Japanese Industrial Standard Committee, JIS Z2274, Tokyo, 1978

    Google Scholar 

  16. K. Gopala Krishna, K. Sivaprasad, T.S.N. Sankara Narayanan, and K.C. Hari Kumar, Localized Corrosion of an Ultrafine Grained Al-4Zn-2Mg Alloy Produced by cryorolling, Corros. Sci., 2012, 60, p 82–89

    Article  Google Scholar 

  17. M. Cabibbo, Microstructure Strengthening Mechanisms in Different Equal Channel Angular Pressed Aluminum Alloys, Mater. Sci. Eng. A Struct., 2013, 560, p 413–432

    Article  Google Scholar 

  18. T. Zhai, X.P. Jiang, J.X. Li, M.D. Garratt, and G.H. Bray, The Grain Boundary Geometry for Optimum Resistance to Growth of Short Fatigue Cracks in High Strength Al-Alloys, Int. J. Fatigue, 2005, 27, p 1202–1209

    Article  Google Scholar 

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Acknowledgments

We gratefully acknowledge the financial support from the Ministry of Science and Technology of the Republic of China (MOST 103-2221-E-008-026-MY2). Many thanks also to National Central University for providing the SEM and TEM equipments and to National Sun-Yat Sen University for the EBSD analyses.

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  1. Department of Mechanical Engineering, National Central University, Zhongli District, Taoyuan City, 32001, Taiwan

    Teng-Shih Shih, Tien-Wei Liao & Wen-Nong Hsu

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  1. Teng-Shih Shih
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  2. Tien-Wei Liao
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Correspondence to Teng-Shih Shih.

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Shih, TS., Liao, TW. & Hsu, WN. Effects of Cryogenic Forging and Anodization on the Mechanical Properties of AA 7075-T73 Aluminum Alloys. J. of Materi Eng and Perform 25, 1211–1218 (2016). https://doi.org/10.1007/s11665-016-1946-2

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  • DOI: https://doi.org/10.1007/s11665-016-1946-2

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