저자명 J. H. Yoon H. Huh C. G. Park J. H. Suh J. S. Kang M. Y. Huh H. G. Kang 
Name Proc. KSTP Fall Conference 
Year 2007 
page 352-355 

Polycrystalline materials such as steels(BCC) and aluminum alloys(FCC) show the strain hardening and the strain rate hardening during the plastic deformation. The strain hardening is induced by deformation resistance of dislocation glide on some crystallographic systems and increase of the dislocation density on grain boundaries or inner grain. However, the phenomenon of the strain rate hardening is not demonstrated distinctly. In this paper, tensile tests for various strain rates are performed in the rage of 10-2 to 102s-1 then, specimens are extracted on the same strain position to investigate the microscopic behavior of deformed materials. The extracted specimen is investigated by using the electron backscattered diffraction(EBSD) and transmission electron microscopy(TEM) results which contain grain size, grain shape, aspect ratio and dislocation substructure.

번호 제목 저자명 날짜 조회 수
256 Dynamic Hardening Equation for Metallic Materials with the Variation of Crystalline Structures file Kwanghyun Ahn Hoon Hu...  2012.06.07 8926
255 Effect of the Measurement Uncertaintty of Dynamic Tensile Properties on Dynamic Buckling Analysis of a Circular Tube file Sehwan Jeong Hoon Huh  2012.08.06 8378
254 Evolution of yield surface of SPCC steel sheet at different strain rates file Jeehyang Huh Hoon Huh  2012.05.29 7916
253 Investigation of springback behavior of DP780 steel sheets [1] file M.K.Choi H.Huh  2012.06.08 7497
252 Evaluation of Ductile Fracture Criteria in Full Stress States file Yanshan Lou, Mingjun...  2013.02.01 6766
251 A New Tangent Stiffness for Anisotropic Elasto-Viscoplastic Analysis of Polycrystalline Deformations file J. H. Yoon H. Huh Y. ...  2006.12.11 6504
250 User Defined Material Model in LS-DYNA for Numerical Simulations of PBX Simulants file Chunghee Park Hoon Hu...  2013.08.30 6355
249 Effect of Tensile Speed on the Failure Load of Laser Welding under Combined Loading Conditions [2] file Jiwoong Ha Hoon Huh S...  2012.06.27 6341
248 Prediction of fracture in a hub-hole expansion with a defected-edge model file J. S. Lee H. Huh  2005.11.29 6147
247 Dynamic Material Properties of an Armor Plate Material for an Armored Vehicle file Jiwoong Ha Kwanghyun ...  2012.06.27 6145
246 Characteristics Analysis of the High Performance Damper-Strut Module file Youn-Ki Ko Jung-Han S...  2006.06.14 6120
245 Effect of Deformation Twinning on Strain Hardening in Titanium file Kwanghyun Ahn Hoon Hu...  2012.06.04 5824
244 Application of Ductile Fracture Criteria for the FLD Prediction of Steel Sheets file Yanshan Lou Soekbong ...  2010.12.27 5773
243 Development of Braking System for Railway Vehicle Using Progressive Compression Process file Kwanghyun Ahn Youn Ki...  2011.12.15 5708
242 Forming Limit Diagram of Advanced High Strength Steel Sheets for High-Speed Sheet Metal Forming file S. J. Lim, S. B. Kim...  2012.05.29 5690
241 Quasi-Static Failure of Spot Welds of AHSS under Combined Loading Conditions file Jiwoong Ha Hoon Huh H...  2011.04.01 5689
240 Finite Element Stress Analysis of the Tire Contact Problem file H. Huh Y. K. Kwak Y. ...  2005.11.29 5626
239 Railway Buffer Stop Using Progressive Compression Process file Kwanghyun Ahn Youn Ki...  2010.12.24 5382
238 Anisotropy Effect on the Fracture Strain of DP980 Sheets [1] file Namsu Park, Sung Jun ...  2013.08.29 5339
» Microscopic Investigation of the Strain Rate Hardening for Metals file J. H. Yoon H. Huh C. ...  2007.10.14 5322