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On the Distortion and Warpage of 7249 Aluminum Alloy After Quenching and Machining

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Abstract

The objective of this study is to determine the effect of solution treatment temperature, quenching media, and various machining sequences on the warpage behavior of aluminum 7249 alloy aged to T6 and T7′ tempers. Large extrusions of 7249 aluminum alloy with fins were cut into 108 “T” sections. The samples were solution-treated, aged, and machined. Three solution temperatures (445, 474, and 505 °C), two quenching media (water and 20% polyalkylene glycol), two aging treatments (T6 and T7′), and three machine sequences were used. The flatness of the samples was measured on the surfaces orthogonal to the z-axis. Three points were on top of both shoulders (six total), six were at the bottom of the sample, and six were on the top of the fin, in the cases where the fin was not milled off. They were then averaged together by surface to represent the overall warpage of each sample.

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References

  1. O.S. Es-Said, T.M. Ruperto, S.L. Vasquez, A.Y. Yue, D.J. Manriques, J.C. Quilla, S.H. Harris, S. Hannan, J. Foyos, E.W. Lee, B. Pregger, N. Abourialy, and J. Ogren, Warpage Behavior of 7050 Aluminum Alloy Extrusions, J. Mater. Eng. Perform., 2007, 16, p 242–247

    Article  CAS  Google Scholar 

  2. H. Boyer, Quenching and Control of Distortion, ASM International, Metals Park, OH, 1988

    Google Scholar 

  3. C. Bates, Selecting Quenchants to Maximize Tensile Properties and Minimize Distortion in Aluminum Parts, J. Heat Treat., 1987, 5, p 27–40

    Article  CAS  Google Scholar 

  4. J. Collins and C. Maduell, Polyalkylene Glycol Quenching of Aluminum Alloys, International Corrosion Forum, National Association of Corrosion Engineers, Houston, TX, 1977, p 7 (Pamphlet)

    Google Scholar 

  5. Santa Clara University, School of Engineering, http://www.scudc.scu.edu/cmdoc/dg_doc/develop/process/physics/b3500001.htm.

  6. Warpage, http://www.efunda.com/designstandards/plastic_design/warpage.cfm, Copyright© 2010 eFunda, Inc

  7. “ASTM Standard A1030/A1030M-05, 2010, Standard Practice for Measuring Flatness Characteristics of Steel Sheet Products,” ASTM International, West Conshohocken, PA, 2010. doi: 10.1520/A1030_A1030M-05, www.astm.org

  8. M. Iskandar, D. Reyes, Y. Gaxiola, E. Fudge, J. Foyos, E.W. Lee, P. Kalu, H. Garmestani, and O.S. Es-Said, The Effect of Varying the Solution Treatment Temperature, Natural Aging Treatment and Artificial Aging Treatment on the Mechanical Strength of 7249 Aluminum Alloy, Mater Sci Forum, 2002, 396–402, p 1121–1126

    Article  Google Scholar 

  9. Matweb, http://www.matweb.com/search/DataSheet.aspx?MatGUID=4a884a58c3bb4814b2ed1d25fda9b7d0&ckck=1, Copyright 1996-2010 by Automation Creations, Inc

  10. J. Foyos, E.W. Lee, C. Kumor, M. Smith, C. Hou, and O. S. Es-Said, Feasibility Study of the Warpage of 7050 Aluminum Plates, Light Weight Alloys for Aerospace Applications IV, E.W. Lee, W.E. Frazier, K. Jatta, and N. Kim, Eds., TMS, 1997, p 73–83

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Authors and Affiliations

  1. Mechanical Engineering Department, Loyola Marymount University, One LMU Blvd, Los Angeles, CA, 90045, USA

    N. Keleshian, R. Kyser, J. Rodriguez, C. Cueva, J. Ogren & O. S. Es-Said

  2. Northrop Grumman Corporation, One Hornet Way, El Segundo, CA, 90425, USA

    V. Vega

  3. Naval Air Systems Command, Naval Air Warfare Center, Code 4342 MS Bldg 2188, Patuxent River, MD, 20670-1908, USA

    E. W. Lee

Authors
  1. N. Keleshian
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  2. R. Kyser
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  3. J. Rodriguez
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  4. C. Cueva
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  5. V. Vega
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  6. E. W. Lee
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  7. J. Ogren
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  8. O. S. Es-Said
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Correspondence to O. S. Es-Said.

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Keleshian, N., Kyser, R., Rodriguez, J. et al. On the Distortion and Warpage of 7249 Aluminum Alloy After Quenching and Machining. J. of Materi Eng and Perform 20, 1230–1234 (2011). https://doi.org/10.1007/s11665-010-9756-4

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  • DOI: https://doi.org/10.1007/s11665-010-9756-4

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