Microscopic investigation of the strain rate hardening for autobody steel sheet

H. Huh, J. H. Yoon, C. G. Park, J. S. Kang, Moo Young Huh, H. G. Kang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Most of auto-body steel sheets show the strain rate hardening during high strain rate deformation. The high strain rate properties of steel sheets have been studied for accurate crashworthiness of vehicles since mechanical properties at high strain rates show different characteristics such as flow stress and fracture elongation from those at the quasi-static state. This paper deals with microscopic investigation of the strain rate hardening for auto-body steel sheets such as SPCC and TRIP steel in viewpoints of deformation texture and dislocation behavior. Tensile tests for various strain rates are performed in the rage of 10-2 to 102/sec which locally happens in real vehicle crash. Specimens are extracted on the same strain position to investigate the microscopic behavior of a deformed material. The extracted specimen is investigated by using the electron backscattered diffraction (EBSD) to examine the texture evolution such as size, shape change and aspect ratio of grains. Transmission electron microscopy (TEM) is employed to demonstrate dislocation structures which contain the change of dislocation density and dislocation behavior.

Original languageEnglish
Title of host publication9th International Conference on Technology of Plasticity, ICTP 2008
PublisherHanrimwon Publishing Co.
Pages1672-1680
Number of pages9
Publication statusPublished - 2008 Jan 1
Event9th International Conference on Technology of Plasticity, ICTP 2008 - Gyeongju, Korea, Republic of
Duration: 2008 Sep 72008 Sep 11

Other

Other9th International Conference on Technology of Plasticity, ICTP 2008
CountryKorea, Republic of
CityGyeongju
Period08/9/708/9/11

Fingerprint

Steel sheet
Hardening
Strain rate
Textures
Crashworthiness
Steel
Plastic flow
Electron diffraction
Aspect ratio
Elongation
Transmission electron microscopy
Mechanical properties

ASJC Scopus subject areas

  • Polymers and Plastics

Cite this

Huh, H., Yoon, J. H., Park, C. G., Kang, J. S., Huh, M. Y., & Kang, H. G. (2008). Microscopic investigation of the strain rate hardening for autobody steel sheet. In 9th International Conference on Technology of Plasticity, ICTP 2008 (pp. 1672-1680). Hanrimwon Publishing Co..

Microscopic investigation of the strain rate hardening for autobody steel sheet. / Huh, H.; Yoon, J. H.; Park, C. G.; Kang, J. S.; Huh, Moo Young; Kang, H. G.

9th International Conference on Technology of Plasticity, ICTP 2008. Hanrimwon Publishing Co., 2008. p. 1672-1680.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Huh, H, Yoon, JH, Park, CG, Kang, JS, Huh, MY & Kang, HG 2008, Microscopic investigation of the strain rate hardening for autobody steel sheet. in 9th International Conference on Technology of Plasticity, ICTP 2008. Hanrimwon Publishing Co., pp. 1672-1680, 9th International Conference on Technology of Plasticity, ICTP 2008, Gyeongju, Korea, Republic of, 08/9/7.
Huh H, Yoon JH, Park CG, Kang JS, Huh MY, Kang HG. Microscopic investigation of the strain rate hardening for autobody steel sheet. In 9th International Conference on Technology of Plasticity, ICTP 2008. Hanrimwon Publishing Co. 2008. p. 1672-1680
Huh, H. ; Yoon, J. H. ; Park, C. G. ; Kang, J. S. ; Huh, Moo Young ; Kang, H. G. / Microscopic investigation of the strain rate hardening for autobody steel sheet. 9th International Conference on Technology of Plasticity, ICTP 2008. Hanrimwon Publishing Co., 2008. pp. 1672-1680
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