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The Occurrence of Shear Bands in Metalworking

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Material Behavior Under High Stress and Ultrahigh Loading Rates

Part of the book series: Sagamore Army Materials Research Conference Proceedings ((SAMC,volume 29))

Abstract

Shear bands, or regions of localized plastic flow crossing many grains, are not uncommon during the deformation processing of metals. They may occur under nominally isothermal conditions (tooling and workpiece at the same initial temperature) as well as non-isothermal conditions (tooling and workpiece at different temperatures). Under isothermal conditions, the localization of plastic flow is a function of the geometry involved in the metalworking operation, the deformation rate, and material properties such as the work-hardening or flow softening rate of the material and its strain rate sensitivity. For non-isothermal metalworking operations, these as well as other process and material parameters controlling temperature, and hence flow stress and strain, gradients must be considered to predict the occurrence of shear bands. Methods of predicting the occurrence and severity of shear bands are presented. The power of the analytical tools are demonstrated with results from studies of the hot forging behavior of several titanium alloys. Other observations of flow localization in a hot-work tool steel, a uranium alloy, and a superalloy are used to illustrate the generality of the concepts presented. In addition, shear band phenomena in metalcutting operations are reviewed in the context of the metalworking studies.

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Author information

Authors and Affiliations

  1. Metalworking Section, Battelle’s Columbus Laboratories, Columbus, Ohio, 43201, USA

    S. L. Semiatin & S. I. Oh

  2. Timken Research, The Timken Company, Canton, Ohio, 44706, USA

    G. D. Lahoti

Authors
  1. S. L. Semiatin
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  2. G. D. Lahoti
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  3. S. I. Oh
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Editor information

Editors and Affiliations

  1. Army Materials and Mechanics Research Center, Watertown, Massachusetts, USA

    John Mescall

  2. Syracuse University, Syracuse, New York, USA

    Volker Weiss

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© 1983 Plenum Press, New York

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Semiatin, S.L., Lahoti, G.D., Oh, S.I. (1983). The Occurrence of Shear Bands in Metalworking. In: Mescall, J., Weiss, V. (eds) Material Behavior Under High Stress and Ultrahigh Loading Rates. Sagamore Army Materials Research Conference Proceedings, vol 29. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-3787-4_7

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  • DOI: https://doi.org/10.1007/978-1-4613-3787-4_7

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4613-3789-8

  • Online ISBN: 978-1-4613-3787-4

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