저자명 Junbeom Kwon, Hoon Huh, Jae-song Kimor 
Journal Metals and Materials International 
Volume  
Number  
Pages  
year 2016 
This paper is concerned with the construction of an empirical model of the Ductile-to-Brittle Transition Temperature (DBTT) for 3.4 % silicon steel based on tensile test results at strain rates ranging from 0.001 s‒1 to 100 s‒1. Dynamic tensile tests are conducted using an in-house servo hydraulic tensile test machine at strain rates of 1 s‒1, 10 s‒1, and 100 s‒1 and quasi-static tensile tests are conducted using Instron 4206 at strain rates of 0.001 s‒1 and 0.01 s‒1 with an environmental chamber. Fracture elongations are measured by a DIC method during all tests using the high-speed camera for accurate measurement. The DBTT of 3.4 % silicon steel is presented in terms of fracture strain with the variation of the temperature and the strain rate. It is demonstrated from the test results that the DBTT increases as the strain rate increases. An empirical model of the DBTT is constructed in terms of strain rate, temperature and fracture elongation. The parameters of the empirical model are calculated from experimental results obtained at various temperatures and strain rates.
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120 Prediction of ductile fracture for advanced high strength steel with a new criterion: Experiments and simulation file Yanshan Lou Hoon Huh  2013.04.08 5804
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118 Failure characterization of spot welds under combined axial-shear loading conditions file J.H.Song H.Huh  2011.08.01 5582
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116 Development of Buffer Stopper Using Progressive Compression Process for Crash Energy Absorption of a Railway Vehicle file Kwanghyun Ahn Hoon Hu...  2012.12.10 5536
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111 Evaluation of the Material Properties of an OFHC Copper Film at High Strain Rates Using a Micro-Testing Machine file J.S. Kim H. Huh  2011.06.07 5299
110 Sheet Metal Forming Analysis of Planar Anisotropic Materials by a Modified Membrane Finite Element Method with Bending Effect file T. H. Choi H. Huh  2005.11.29 5255
109 DESIGN OF THE CROSS SECTION SHAPE OF AN ALUMINUM CRASH BOX FOR CRASHWORTHINESS ENHANCEMENT OF A CAR file S.B. Kim H. Huh G.H. ...  2009.08.03 5249