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A Microsample Tensile Test Application: Local Strength of Impact Welds Between Sheet Metals

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Abstract

Microsample tensile testing was conducted to evaluate the quality of impact welds created by vaporizing foil actuator welding. Tensile test samples with a gauge length of 0.6 mm were electro-discharge machined out of welds created between 1-mm-thick aluminum alloy type 6061 (AA6061) sheets and 6-mm-thick copper (Cu110) plates. Aluminum sheets were used as flyers, while copper plates acted as targets. Flyer sheets in T6 as well as T4 temper conditions were utilized to create welds. Some of the welds made with T4 temper flyers were heat treated to a T6 temper. It was found that the welds made with T4 temper flyers were slightly stronger (max. of 270 MPa) than those produced with T6 temper flyers. Generally, failure propagated in a brittle manner across the weld interface; however, elemental mapping reveals material transfer on either member of the welded system. This work proves the feasibility to apply microsample tensile testing to assess impact welding, even when conducted with flyer sheets of 1 mm or less, and provides insight that is complementary to other test methods.

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Acknowledgments

The authors are grateful for sponsorship from the US Department of Energy’s Vehicle Technologies Program (Grant Number DE-EE006451). The views and opinions of authors expressed herein do not necessarily state or reflect those of the US Government or any agency thereof.

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  1. J. T. Benzing

    Present address: Interdisciplinary Materials Science, Vanderbilt University, 410 24th Ave. S. (311 FEL Building), Nashville, TN, 37235, USA

Authors and Affiliations

  1. Department of Materials Science and Engineering, The Ohio State University, 2041 College Road, Columbus, OH, 43210, USA

    J. T. Benzing, M. He, A. Vivek, G. A. Taber, M. J. Mills & G. S. Daehn

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  1. J. T. Benzing
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  2. M. He
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Correspondence to J. T. Benzing.

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Benzing, J.T., He, M., Vivek, A. et al. A Microsample Tensile Test Application: Local Strength of Impact Welds Between Sheet Metals. J. of Materi Eng and Perform 26, 1229–1235 (2017). https://doi.org/10.1007/s11665-017-2514-0

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  • DOI: https://doi.org/10.1007/s11665-017-2514-0

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