Large-strain Bauschinger effect in austenitic stainless steel sheet |
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| Authors: | T. Manninen P. Myllykoski T. Taulavuori A.S. Korhonen |
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| Affiliation: | 1. Australian Centre for Microscopy and Microanalysis, The University of Sydney, NSW 2006, Australia;2. Department of Materials Science and Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany;3. School of Materials Science and Engineering, University of New South Wales, NSW 2052, Australia;4. Department of Mechanical Engineering, The University of Melbourne, Victoria 3010, Australia;1. Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran;2. Iranian Surface Research and Engineering Centre, Isfahan 84155-337, Iran;3. Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 790-784, Republic of Korea |
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| Abstract: | Large-strain Bauschinger effect in cold-rolled austenitic stainless steel sheet is investigated after large amounts of prestrain. The material is prestrained in uniaxial tension, and the tensile properties of the prestrained material are measured in different angles with respect to the prestraining direction. By comparing the differences in the yield stresses in different orientations, the effect of prestraining on material anisotropy is studied. The method is applied to AISI 304-type stainless steel sheet. The test results are analyzed using a combined isotropic–kinematic hardening model. The results indicate that this kind of material shows a considerable Bauschinger effect. Transient and permanent softening is observed in the experiments. The experimental Young's modulus also seems to decrease with prestrain. |
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