Research Achievements 1 페이지 | 포항공과대학교 철강·에너지소재대학원

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Research Achievements

Total 104건 1 페이지

104

EMRL [EMRL]Prof. Kyu-Young Park : Gradational anionic redox enabling high-energy P2-type Na-layered oxide cathode Abstract: Anionic-redox-based layered oxide materials are considered promising cathodes for Na-ion batteries because of their high energy densities. However, the anionic redox reaction at high voltage results in structural instability of th..

작성자 최고관리자 작성일 2023-02-20
103

MRL [MRL]Prof. Chong Soo Lee : Heterogeneous-structured Ti-6Al-4V with enhanced mechanical properties in monotonic and cyclic deformation modes This study aimed to develop heterogeneous-structured (HS) Ti-6Al-4V composed of coarse and fine grains to enhance the alloy's mechanical properties. This microstructure was induced by selective activation of dynamic globularization by using..

작성자 최고관리자 작성일 2023-01-02
102

MRL [MRL]Prof. Chong Soo Lee : Increasing the resistance to hydrogen embrittlement in martensitic steel by partial phase transformation and tempering This paper presents a method to increase the hydrogen-embrittlement (HE) resistance of martensite steel using by partial phase transformation and tempering. Dual-tempered martensitic (DTM) steel was produced by two-step quenching..

작성자 최고관리자 작성일 2023-01-02
101

CSL [CSL]Prof. Youn-Bae Kang : Recycling red mud to develop a competitive desulfurization flux for Kanbara Reactor (KR) desulfurization process Abstract : One of the industrial wastes, red mud, was assessed as an additive to lime, as a new desulfurization flux for the hot metal in the steelmaking process. Since typical red mud contains some amount of iron oxide, a prelimina..

작성자 최고관리자 작성일 2022-11-29
100

SNMPL [SNMPL]Prof. Hyoung-Seop Kim : Mechanically derived short-range order and its impact on the multi-principal-element alloys Abstract : Chemical short-range order in disordered solid solutions often emerges with specific heat treatments. Unlike thermally activated ordering, mechanically derived short-range order (MSRO) in a multi-principal-element Fe40Mn40C..

작성자 최고관리자 작성일 2022-11-14
99

SNMPL [SNMPL]Prof. Hyoung-Seop Kim : Constitutive modeling of cellular-structured metals produced by additive manufacturing Abstract : Computational modeling is essential in the development and application of metal additive manufacturing (MAM). Most materials processed by laser or electron beam MAM exhibit a characteristic cellular structure, where the cel..

작성자 최고관리자 작성일 2022-11-14
98

CSPL [CSPL]Prof. Jung-Wook Cho : Resolving the mixed-alkali effect on the viscoelastic behavior of supercooled liquids Abstract : Relaxation processes in mixed-alkali metaphosphate glasses and supercooled liquids are studied using a combination of calorimetric, electrical impedance spectroscopic and rheological measurements to inves- tigate the atomistic na..

작성자 최고관리자 작성일 2022-11-04
97

NEDL [NEDL]Prof. Changshin Jo : Designing fluorine-free electrolytes for stable sodium metal anodes and high-power seawater batteries via SEI reconstruction AbstractFluorine (F) is regarded as a key element in electrolytes for sodium metal anodes (SMAs) because of the formation of NaF containing solid–electrolyte interphase (SEI) layers; however, the high-cost and HF formation issues expe..

작성자 최고관리자 작성일 2022-11-02
96

ADL [ADL]Prof. Yoon-Uk Heo : Improved hot ductility of an as-cast high Mn TWIP steel by direct implementation of an MnS-containing master alloy Abstract: Transverse cracking is the main issue during continuous casting of TWIP steels due to degraded hot ductility at 700–950 ◦C. In this study, we improve the hot ductility of an 18.1Mn-0.68C-1.5Al (wt.%) TWIP steel by refining t..

작성자 최고관리자 작성일 2022-10-19
95

ADL [ADL]Prof. Yoon-Uk Heo : AlN-assisted internal oxidation behavior in Al-containing high Mn steels Abstract: The role of AlN on the internal oxidation behavior was investigated in Al-containing high Mn steels. Accelerated internal oxidation behavior was confirmed as Al contents increased. The sequential formation of internal&n..

작성자 최고관리자 작성일 2022-10-19
94

CTL [CTL] Prof. Chang Hee Yim: Effect of Reheating Temperatures on Hot Ductility and Precipitation Behavior of Low-Carbon Steels The influence of reheating temperatures on hot ductility is investigated in two Ni-, Mo-, and Cu-containing low-carbon steels. The effects of solution treatment conditions at 1623, 1673 K, and remelting at 1803 K on the reduction in a..

작성자 최고관리자 작성일 2022-09-07
93

SSL [SSL]Prof. Sung-Joon Kim : Effect of Zn‑Coating Process on Liquid Metal Embrittlement of TRIP Steel AbstractThe study investigated the microstructural evolution of the coating and liquid metal embrittlement (LME) sensitivity of the transformation induced plasticity (TRIP) steel sheets which were prepared by different coating process..

작성자 최고관리자 작성일 2022-08-19
92

SSL [SSL]Prof.Sung-Joon Kim : Effects of Ni/Cu replacement on improvement of tensile and hydrogen-embrittlement properties in austenitic stainless steels Abstract : Effects of Ni/Cu replacement and subsequent aging treatment on tensile and hydrogen embrittlement (HE) properties were investigated in Fe-Cr-Ni austenitic stainless steels. With the Ni/Cu replacement, tensile strength ..

작성자 최고관리자 작성일 2022-08-19
91

MML [MML]Prof.Frederic Barlat : Finite element implementation of hydrostatic pressure-sensitive plasticity and its application to distortional hardening model and sheet metal forming simulations In this work, the hydrostatic pressure-dependency of the distortional plasticity model HAH20 was implemented using a finite element (FE) code to account for the strength-differential (SD) effect that has been observed in advanced high..

작성자 최고관리자 작성일 2022-08-04
90

MML [MML]Prof.Frederic Barlat : Investigation of Elastic Modulus Degradation and Recovery with Time and Baking Process for Deformed Automotive Steel Sheets This study investigated the elastic recovery phenomenon with elapsed time and heat treatment after the plastic deformation of automotive steel sheets. A conventional uniaxial loading–unloading-loading test was modified to include the ..

작성자 최고관리자 작성일 2022-08-04
89

CML [CML]Prof.Dong-Woo Suh: Interplay of Nb addition and annealing temperature and its influence on microstructure and tensile properties of multiphase steel We investigated the interplay of Nb addition and annealing temperature and its influence on the microstructure evolution in low carbon cold-rolled steel to understand the unique change of tensile properties derived by Nb addition. While the..

작성자 최고관리자 작성일 2022-06-14

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