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Specimen and Grain Size Effects of Al1100 on Strain and Strain Rate Hardening at Various Strain Rates for Al1100

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Abstract

This paper is concerned with comparison of the tensile properties of Al1100 thin film in a micro-scale to that of Al1100 sheet in a macro-scale. The material properties of Al1100 film and sheet with a thickness of 96 μm and 1 mm respectively have been investigated at strain rates ranging from 0.001 to 100 s−1. The experiments were conducted with Static Micro-Material Testing Machine (SMMTM) and High Speed Micro-Material Testing Machine (HSMMTM) for micro-specimens and with Instron 5583 and high speed material testing machine (HSMTM) for macro-specimens. A reliable jig system for SMMTM and HSMMTM has been newly developed for easy installation of a specimen and accurate alignment between a specimen and the jig system to enhance the reproducibility of tests. The digital image correlation (DIC) method is employed to measure the axial strain of the specimens. In order to obtain a fine speckle pattern for the DIC method, a novel technique is employed to print the speckle pattern with fine particles by blowing sprayed particles before printing. The grain sizes of two Al1100 specimens have been compared and the number of grains in the gauge cross-section has been calculated to obtain the grain number which is related to the specimen size effect. Electron Back Scattered Diffraction (EBSD) images were obtained for both micro-specimens and macro-specimens and analyzed to measure the grain size. The Al1100 film with a smaller average grain size shows larger strain hardening than the Al1100 sheet with a larger average grain size.

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References

  1. Sharpe WN, Yuan B, Edwards RL (1997) A new technique for measuring the mechanical properties of thin films. J Microelectromech Syst 6:193–199

    Article  Google Scholar 

  2. Sharpe WN, Pulskamp J, Gianola DS, Eberl C, Polcawich RG, Thompson RJ (2007) Strain measurements of silicon dioxide microspecimens by digital imaging processing. Exp Mech 47:649–658

    Article  Google Scholar 

  3. Lee SJ, Han SW, Hyun SM, Lee HJ, Kim JH, Kim YI (2009) Measurement of Young’s modulus and Poisson’s ratio for thin Au films using a visual image tracing system. Curr Appl Phys 9:S75–S78

    Article  Google Scholar 

  4. Emery RD, Povirk GL (2003) Tensile behavior of free-standing gold films. Part I. Coarse-grained films. Acta Mater 51:2067–2078

    Article  Google Scholar 

  5. Huh YH, Kim DL, Kim DJ, Park P, Kee CD, Park JH (2004) Application of micro-ESPI technique for measurement of micro-tensile properties. Adv Nondestruct Eval 270–273:744–749

    Google Scholar 

  6. Huh YH, Kim DL, Kee CD (2005) Measurement of continuous micro-tensile strain using micro-ESPI technique. Adv Fract Strength 297–300:53–58

    Google Scholar 

  7. Espinosa HD, Prorok BC, Peng B (2004) Plasticity size effects in free-standing submicron polycrystalline FCC films subjected to pure tension. J Mech Phys Solids 52:667–689

    Article  Google Scholar 

  8. Chasiotis I, Knauss WG (2002) A new microtensile tester for the study of MEMS materials with the aid of atomic force microscopy. Exp Mech 42:51–57

    Article  Google Scholar 

  9. Tsuchiya T, Tabata O, Sakata J, Taga Y (1998) Specimen size effect on tensile strength of surface-micromachined polycrystalline silicon thin films. J Microelectromech Syst 7:106–113

    Article  Google Scholar 

  10. Hirt G, Justinger H, Witulski N (2003) Analysis of size effects in micro sheet forming. BIAS-Verlag, ISBN 19-26

  11. Kim JS, Huh H (2011) Evaluation of the material properties of an OFHC copper film at high strain rates using a micro-testing machine. Exp Mech 51:845–855

    Article  Google Scholar 

  12. Engel U, Eckstein R (2002) Microforming-from basic research to its realization. J Mater Process Technol 125–126:35–44

    Article  Google Scholar 

  13. Tiesler N, Engel U (2000) Microforming-effects of miniaturization. Proceedings of the 8th International Conference on Metal Forming. A.A. Balkema, Rotterdam, pp 355–360

    Google Scholar 

  14. Kim GY, Ni J, Koc M (2007) Modeling of the size effects on the behavior of metals in microscale deformation processes. J Manuf Sci Eng Trans ASME 129:470–476

    Article  Google Scholar 

  15. Engel U, Egerer E (2003) Basic research on cold and warm forging of microparts. Key Eng Mater 233–236:449–456

    Article  Google Scholar 

  16. Geiger M, Kleiner M, Eckstein R, Tiesler N, Engel U (2001) Microforming. CIRP Ann 50(2):445–462

    Article  Google Scholar 

  17. Gau JT, Principe C, Wang J (2007) An experimental study on size effects on flow stress and formability of aluminum and brass for microforming. J Mater Process Technol 184:42–46

    Article  Google Scholar 

  18. Janssen PJM, Keijser Th H, Geers MGD (2006) An experimental assessment of grain size effects in the uniaxial straining of thin Al sheet with a few grains across the thickness. Mater Sci Eng A 419:238–248

    Article  Google Scholar 

  19. Chu TC, Ranson WF, Sutton MA (1985) Applications of digital-image-correlation techniques to experimental mechanics. Exp Mech 25(3):232–244

    Article  Google Scholar 

  20. Hild F, Roux S (2012) Digital image correlation. Optical methods for solid mechanics: a fullfield approach, 1st edn. Wiley-VCH Verlag GmbH & Co. KGaA

  21. Tong W (2005) An evaluation of digital image correlation criteria for strain mapping applications. Strain 41(4):167–175

    Article  Google Scholar 

  22. Hwang SF, Horn JT, Wang HJ (2008) Strain measurement of SU-8 photoresist by a digital image correlation method with a hybrid genetic algorithm. Opt Lasers Eng 46(3):281–289

    Article  Google Scholar 

  23. Li B, Chen Q (2005) Direct micro mechanical testing method for MEMS materials. In: ASME 2005 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, pp 229–232

  24. ISO/IEC Guide 98-3 (2008) Guide to the expression of uncertainty in measurement

  25. Ogawa H, Suzuki K, Kaneko S, Nakano Y, Ishikawa Y, Kitahara T (1997) Tensile testing of microfabricated thin films. Microsyst Technol 3:117–121

    Article  Google Scholar 

  26. Huh H, Lim JH, Park SH (2009) High speed tensile test of steel sheets for stress–strain curve at the intermediate strain rate. Int J Automot Technol 10:195–204

    Article  Google Scholar 

  27. Meyers MA, Andrade UR, Chokshi AH (1995) The effect of grain-size on the high-strain, high-strain rate behavior of copper. Metall Mater Trans A Phys Metall Mater Sci 26:2881–2893

    Article  Google Scholar 

  28. ASTM E1382-97 (2010) Standard test methods for determining average grain size using semiautomatic and automatic image analysis

  29. Engel U, Messner A (1998) Numerical simulation of metal forming processes for the production of microparts. Wire 2:94–97

    Google Scholar 

  30. Hansen N (1977) The effect of grain size and strain on the tensile flow stress of aluminum at room temperature. Acta Metall 25:863–869

    Article  Google Scholar 

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Authors and Affiliations

  1. School of Mechanical, Aerospace and Systems Engineering, Korea Advanced Institute of Science and Technology, Daeduk Science Town, Daejeon, 305-701, South Korea

    J.B. Kwon & H. Huh

  2. Railway Structure Research Department, Korea Railroad Research Institute, 360-1, Woram-Dong, Uiwang-Si, Gyeonggi-Do, 437-757, South Korea

    J.S. Kim

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  1. J.B. Kwon
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  2. H. Huh
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  3. J.S. Kim
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Correspondence to H. Huh.

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Kwon, J., Huh, H. & Kim, J. Specimen and Grain Size Effects of Al1100 on Strain and Strain Rate Hardening at Various Strain Rates for Al1100. Exp Mech 54, 987–998 (2014). https://doi.org/10.1007/s11340-014-9870-6

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  • DOI: https://doi.org/10.1007/s11340-014-9870-6

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