Search Results - "Lee, Young Kook"
-
1
The effects of the heating rate on the reverse transformation mechanism and the phase stability of reverted austenite in medium Mn steels
Published in Acta materialia (01-04-2014)“…Both the mechanism of the reverse transformation from martensite (α′) to austenite (γ) and the stability of reverted γ were systematically investigated as a…”
Get full text
Journal Article -
2
Design of high strength medium-Mn steel using machine learning
Published in Materials science & engineering. A, Structural materials : properties, microstructure and processing (23-05-2022)“…The objective of present study was to develop a medium-Mn steel with superior tensile properties using machine learning. For this purpose, 1075 datasets on…”
Get full text
Journal Article -
3
The effects of the initial martensite microstructure on the microstructure and tensile properties of intercritically annealed Fe–9Mn–0.05C steel
Published in Acta materialia (01-10-2014)“…The effects of the initial microstructure of α′ martensite on the microstructural evolution during intercritical annealing and the tensile properties of…”
Get full text
Journal Article -
4
The effects of prior austenite grain boundaries and microstructural morphology on the impact toughness of intercritically annealed medium Mn steel
Published in Acta materialia (01-01-2017)“…The effects of prior austenite (γ) grain boundaries and microstructural morphology on the impact toughness of an annealed Fe-7Mn-0.1C-0.5Si medium Mn steel…”
Get full text
Journal Article -
5
Microstructural evolution during plastic deformation of twinning-induced plasticity steels
Published in Scripta materialia (01-06-2012)“…The microstructural evolution characteristics, especially mechanical twinning during plastic deformation in twinning-induced plasticity (TWIP) steels, are…”
Get full text
Journal Article -
6
The effects of Si on the mechanical twinning and strain hardening of Fe–18Mn–0.6C twinning-induced plasticity steel
Published in Acta materialia (01-05-2013)“…The stacking-fault energy (SFE), dislocation slip, mechanical twinning, strain hardening, and yield and tensile strengths were systemically investigated in…”
Get full text
Journal Article -
7
The mechanism of dynamic strain aging for type A serrations in tensile curves of a medium-Mn steel
Published in Acta materialia (01-03-2021)“…The objective of the present study is to clarify the mechanism of dynamic strain aging (DSA) causing serrations in tensile flow curves of…”
Get full text
Journal Article -
8
Effects of Mo concentration on recrystallization texture, deformation mechanism and mechanical properties of Ti–Mo binary alloys
Published in Journal of alloys and compounds (25-04-2020)“…In the present study, the effects of Mo concentration on the recrystallization texture, deformation mechanism and mechanical properties were investigated using…”
Get full text
Journal Article -
9
The effects of grain size on yielding, strain hardening, and mechanical twinning in Fe–18Mn–0.6C–1.5Al twinning-induced plasticity steel
Published in Materials science & engineering. A, Structural materials : properties, microstructure and processing (15-01-2016)“…The objective of the present study was to investigate the influences of grain refinement on yielding, strain hardening, and mechanical twinning during tensile…”
Get full text
Journal Article -
10
Superplasticity in a lean Fe-Mn-Al steel
Published in Nature communications (29-09-2017)“…Superplastic alloys exhibit extremely high ductility (>300%) without cracks when tensile-strained at temperatures above half of their melting point…”
Get full text
Journal Article -
11
Improved mechanical properties of Mg–7.6Al–0.4Zn alloy through aging prior to extrusion
Published in Scripta materialia (15-12-2014)“…This paper demonstrates that aging prior to extrusion (APE) can greatly enhance the mechanical properties of an extruded Mg–7.6Al–0.4Zn alloy. The fine…”
Get full text
Journal Article -
12
The effect of austenite grain size on deformation mechanism of Fe–17Mn steel
Published in Materials science & engineering. A, Structural materials : properties, microstructure and processing (30-03-2021)“…The transition of deformation mechanism from transformation-induced plasticity (TRIP) to twinning-induced plasticity (TWIP) was investigated in a viewpoint of…”
Get full text
Journal Article -
13
Pitting corrosion behavior in advanced high strength steels
Published in Journal of alloys and compounds (15-01-2015)“…•The density of inclusions was high in an order of DP, TWIP, and TRIP steels.•TRIP and TWIP steels exhibited complex inclusions as well as single…”
Get full text
Journal Article -
14
The mechanism of dynamic strain aging for type A serrations in tensile flow curves of Fe-18Mn-0.55C (wt.%) twinning-induced plasticity steel
Published in Acta materialia (15-04-2020)“…To elucidate the mechanism of dynamic strain aging (DSA) causing serrations in the tensile curves of an fcc austenitic Fe-18Mn-0.55C (wt.%) twinning-induced…”
Get full text
Journal Article -
15
Design for Fe-high Mn alloy with an improved combination of strength and ductility
Published in Scientific reports (15-06-2017)“…Recently, Fe-Mn twinning-induced plasticity steels with an austenite phase have been the course of great interest due to their excellent combination of tensile…”
Get full text
Journal Article -
16
Anisotropic Mechanical Behavior of Additive Manufactured AISI 316L Steel
Published in Metallurgical and materials transactions. A, Physical metallurgy and materials science (15-04-2019)“…We investigated the relationship between the microstructure and mechanical properties of additive manufactured AISI 316L steel regarding the grain aspect ratio…”
Get full text
Journal Article -
17
The effect of Si on hydrogen embrittlement of Fe-18Mn-0.6C-xSi twinning-induced plasticity steels
Published in Acta materialia (15-01-2016)“…The hydrogen embrittlement (HE) of Fe-18Mn-0.6C-xSi (wt.%) twinning-induced plasticity (TWIP) steels was investigated through slow strain rate tensile tests…”
Get full text
Journal Article -
18
Fabrication of bimodal-grained Al-free medium Mn steel by double intercritical annealing and its tensile properties
Published in Journal of alloys and compounds (05-10-2016)“…The objectives of the present study were to develop the bimodal-grained microstructure in a medium Mn steel without the addition of Al only through a…”
Get full text
Journal Article -
19
Effects of lamellar structure on tensile properties and resistance to hydrogen embrittlement of pearlitic steel
Published in Acta materialia (15-06-2019)“…The hydrogen embrittlement (HE) and H trapping sites of pearlitic steel specimens with various lamellar spacings (λ) were evaluated through slow strain rate…”
Get full text
Journal Article -
20
Micro-axial cracking in unnotched, cold-drawn pearlitic steel wire: Mechanism and beneficial effect on the resistance to hydrogen embrittlement
Published in Acta materialia (15-02-2022)“…Effects of cold drawing ratio (CDR) on the microstructure, tensile properties, H absorption and hydrogen embrittlement (HE) of pearlitic steel wire were…”
Get full text
Journal Article