Determination of forming limits of TWIP steel sheet using linear and nonlinear strain paths

. The main goal of the present paper is investigation of the mechanical behaviour of high manganese content steel sheet which is well known in the literature as Twinning-Induced Plasticity (TWIP) under linear and nonlinear loading path. Contrary to Nakajima experiment, cruciform specimen under biaxi...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2018-12, Vol.461 (1), p.12019
Main Authors: Farahnak, P, Urbanek, M, Rund, M, Dzugan, J
Format: Article
Language:English
Subjects:
Biaxial loads
Cruciform tests
Forming limit diagrams
Manganese
Mechanical properties
Metal sheets
Tensile tests
TWIP steels
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Summary:. The main goal of the present paper is investigation of the mechanical behaviour of high manganese content steel sheet which is well known in the literature as Twinning-Induced Plasticity (TWIP) under linear and nonlinear loading path. Contrary to Nakajima experiment, cruciform specimen under biaxial loading can provide linear and nonlinear strain path. This work aims to determine the numerical Forming Limit Curve (FLC) for TWIP sheet using cruciform specimen under biaxial loading. For this purpose, uniaxial tensile tests are performed on standard dog-bone samples which are extracted from rolling, transversal and diagonal directions to identify the flow curve as well as Lankford ratios. Data are used as input for numerical simulation of cruciform specimen. Results show the applicability of cruciform specimen for linear and nonlinear strain paths.
ISSN:1757-8981
1757-899X
1757-899X
DOI:10.1088/1757-899X/461/1/012019