Tensile Deformation and Fracture of TRIP590 Steel from Digital Image Correlation

Paper #:
  • 2010-01-0444

Published:
  • 2010-04-12
Citation:
Savic, V., Hector, L., Snavely, K., and Coryell, J., "Tensile Deformation and Fracture of TRIP590 Steel from Digital Image Correlation," SAE Int. J. Mater. Manuf. 3(1):246-254, 2010, https://doi.org/10.4271/2010-01-0444.
Pages:
9
Abstract:
Quasi-static tensile properties of TRIP590 steels from three different manufacturers were investigated using digital image correlation (DIC). The focus was on the post-uniform elongation behavior which can be very different for steels of the same grade owing to different manufacturing processes. Miniature tensile specimens, cut at 0°, 45°, and 90° relative to the rolling direction, were strained to failure in an instrumented tensile stage. True stress-true strain curves were computed from digital strain gages superimposed on digital images captured from one gage section surface during tensile deformation. Microstructural phases in undeformed and fracture specimens were identified with optical microscopy using the color tint etching process. Fracture surface analyses conducted with scanning electron microscopy and energy dispersive spectroscopy were used to investigate microvoids and inclusions in all materials.
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