Damage Investigation of Boron Steel at Hot Stamping Conditions
File(s)
Published version
Author(s)
Type
Conference Paper
Abstract
The uniaxial tension tests of 1500 MPa boron steel at strain rates of 0.01-5.0 s-1 and temperatures of 550-850 °C were performed. Considering the difference between the deformation necking cross section and the centre measuring section of specimen, a correction method of measuring strain and temperature at necking cross section are developed. For the method, the deformation of necking cross section was obtained which approximate for the trapezoidal change law near the necking zone. The stress strain curves are corrected based on the correction method of the strain and by considering temperature correction. A set of unified constitutive equations has been developed and calibrated. Correlation between the corrected and predicted true stress data from the constitutive equation is presented. The correlation coefficient is 0.969, and the absolute average relative error is 3.73% in the range of allowable experimental conditions.
Date Issued
2014-10-15
Date Acceptance
2014-10-01
Citation
Procedia Engineering, 2014, 81, pp.1744-1749
ISSN
1877-7058
Publisher
Elsevier
Start Page
1744
End Page
1749
Journal / Book Title
Procedia Engineering
Volume
81
Copyright Statement
© 2014 Elsevier Ltd. This is an open access article under the CC BY-NC-ND license.
Source
11th International Conference on Technology of Plasticity (ICTP 2014)
Subjects
Science & Technology
Technology
Engineering, Multidisciplinary
Engineering
Boron steel
Visco-plastic damage constitutive model
Correction method
Fracture
CONSTITUTIVE-EQUATIONS
DEFORMATION
MODEL
MD Multidisciplinary
Publication Status
Published
Start Date
2014-10-19
Finish Date
2014-10-24
Coverage Spatial
Nagoya, Japan
Date Publish Online
2014-10-15