Research Achievements 6 페이지 | 포항공과대학교 친환경소재대학원

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Research Achievements

Total 189건 6 페이지

109

SSL [SSL]Prof. Sung-Joon Kim: Correlation between grain size variation and hydrogen embrittlement in a cost-effective Fe40Mn40Ni10Cr10 austenitic medium entropy alloy Abstract: The effect of grain size variation (11 mm, 34 mm) on the hydrogen-induced tensile properties degradation of a Co-free cost-effective Fe40Mn40Ni10Cr10 austenitic medium entropy alloy was investigated using a slow strain rate ..

작성자 최고관리자 작성일 2023-08-14
108

SSL [SSL]Prof. Sung-Joon Kim: Effects of carbon and nitrogen on HallePetch relationship in austenitic stainless steel Abstract: HallePetch relationship was investigated for austenitic stainless steels with either 0.3 wt% C or N. It was found that HallePetch slope was higher for the nitrogen-containing steel, which implied that higher stress was requi..

작성자 최고관리자 작성일 2023-08-14
107

SSL [SSL] Prof. Sung-Joon Kim: Direct comparison of C and N effect on hydrogen embrittlement of stable 17Cr-10Ni-6Mn austenitic stainless steel Abstract : The effects of C and N on hydrogen embrittlement (HE) were investigated in 17Cr-10Ni-6Mn based stable austenitic stainless steels containing 0.2 wt% of either C or N. C and N increased tensile strength by solid solution har..

작성자 최고관리자 작성일 2023-08-14
106

PEL Prof. Young-Seek Yoon : Rotary hearth furnace for steel solid waste recycling: Mathematical modeling and surrogate-based optimization using industrial-scale yearly operational data AbstractThe presence of zinc in byproduct dust produced during steel production poses a challenge to resource management and can have adverse environmental effects. This study investigates the dezincification behavior of a commercial-scale ..

작성자 최고관리자 작성일 2023-04-05
105

PEL [PEL]Prof. Young-Seek Yoon : Vacuum pressure swing adsorption for efficient off-gas recycling: Techno-economic and CO2 abatement study AbstractWe suggest a vacuum pressure swing adsorption that uses CuCl/Boehmite adsorbent as a novel material to efficiently recycle a blast furnace gas into the blast furnace and discuss the techno-economic and CO2 abatement impact. To ident..

작성자 최고관리자 작성일 2023-04-05
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

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