Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Joong Keun Park"'
Autor:
D. H. Hong, Joong-Keun Park
Publikováno v:
Philosophical Magazine. 98:848-863
The purpose of the present work was to verify the grain size distribution (GSD) method, which was recently proposed by one of the present authors as a method for evaluating the fraction of dynamic recrystallisation (DRX) in a microalloyed medium carb
Autor:
J. M. Kim, Joong Keun Park
Publikováno v:
Philosophical Magazine Letters. 97:320-327
The precipitation of AlN particles and grain refinement in the Al(N)-added medium C–Mn steel have been studied using a Gleeble hot-deformation simulator and extraction replica TEM technique. No significant grain refinement occurs during either hot-
Publikováno v:
Current Applied Physics. 17:820-828
Donor-type point defects such as a Se vacancy or cation antisite in Cu(In,Ga)Se2 (CIGS) films were controlled by Se annealing of CIGS film. The photoluminescence intensities originating from such defects were reduced by Se annealing at 300 °C. The s
Publikováno v:
Materials & Design. 57:250-257
In order to examine the combined effect of plastic deformation and aging process, the Al 7075 alloy was subjected to equal channel angular pressing (ECAP) deformation by route BC in various ECAP and aging conditions: pre-ECAP aging, post-ECAP aging a
Autor:
Tae-Hyung Kim, Joong-Keun Park
Publikováno v:
Materials Science and Technology. 29:1414-1422
The austenite grain coarsening behaviour of V-microalloyed (MA) medium carbon steel during induction heating at high frequency is studied, by varying induction input power, and using Gleeble simulating the ultrafast heating rates and Monte Carlo simu
Publikováno v:
Journal of Alloys and Compounds. 576:350-357
The aim of this paper was to examine the microstructure and texture that develops during equal channel angular pressing (ECAP). Al-7075 alloy was subjected to 4 passes of ECAP deformation at room temperature by using Route B C and A. The texture was
Autor:
Tae Woong Kim, Jun Hyung Lim, Ju Yun Choi, Hyoungsub Kim, Seung Muk Lee, Soon Yong Hwang, Joong Keun Park, Jinho Joo, Soo Min Hwang, Young Dong Kim, Tae Jung Kim
Publikováno v:
Current Applied Physics. 13:S41-S44
Nanoscale thick Ti-silicate films were synthesized by the solution process on Si(100) substrates, followed by post annealing of rapid thermal process (RTP). The film retained its amorphous structure with a remarkably enhanced permittivity ( k ) value
Publikováno v:
physica status solidi (a). 209:2087-2090
We have investigated the effects of gate dielectric layers having different microstructures on the crystallographic properties and device performances of atomic-layer-deposited (ALD) ZnO thin-film transistors (TFTs) in a bottom-gated structure. Among
Publikováno v:
Materials Science and Engineering: A. 546:53-58
The effect of ECAE (equal channel angular extrusion)-processing on the thermo-mechanical behavior of Ti34 wt.%Nb0.14 wt.%O shape memory alloy was studied by measuring the tensile stress–strain curve at various temperatures and using DSC, X-ray diff
Autor:
Joong-Keun Park, Sushant Kumar Badjena
Publikováno v:
Materials Science and Engineering: A. 548:126-133
Using a Gleeble hot-deformation simulator, we have studied the dynamic recrystallization (DRX) behavior of Al–V–N micro-alloyed steel subjected to two different cooling conditions, i.e., air-cooling (AC) and water-cooling (WC), after solution tre