Research Achievements 5 페이지 | 포항공과대학교 친환경소재대학원

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Research Achievements

Total 148건 5 페이지

84

PML [PML]Prof. Eul-Bum Lee:AI and Text-Mining Applications for Analyzing Contractor’s Risk in Invitation to Bid (ITB) and Contracts for Engineering Procurement and Construction (EPC) Projects Contractors responsible for the whole execution of engineering, procurement, and construction(EPC) projects are exposed to multiple risks due to various unbalanced contracting methods suchas lump-sum turn-key and low-bid selection. Although..

작성자 최고관리자 작성일 2022-04-01
83

PML [PML]Prof. Eul-Bum Lee: A Digitalized Design Risk Analysis Tool with Machine-Learning Algorithm for EPC Contractor’s Technical Specifications Assessment on Bidding Engineering, Procurement, and Construction (EPC) projects span the entire cycle of industrial plants, from bidding to engineering, construction, and start-up operation and maintenance.Most EPC contractors do not have systematic decision-mak..

작성자 최고관리자 작성일 2022-03-23
82

SSL [SSL]Prof.Sung-Joon Kim:C clustering and partitioning by static strain aging in cold-rolled 16Cr-5Ni supermartensitic stainless steel Static strain aging behavior of cold-rolled 16Cr-5Ni supermartensitic stainless steel was investigated after it had been aged for 30 min at 400 °C. In uniaxial tensile tests of 20% cold-rolled specimens, increase of yield strength to ~300 M..

작성자 최고관리자 작성일 2022-03-02
81

SSL [SSL] Prof. Sung-Joon Kim: Counter-balancing effects of Si on C partitioning and stacking fault energy of austenite in 10Mn quenching and partitioning steel Silicon is an essential alloying element in quenching and partitioning (Q&P) steels, because it is known to suppress carbide precipitation during partitioning step and promote carbon partitioning to stabilize austenite. When 2 wt% Si wa..

작성자 최고관리자 작성일 2022-02-22
80

CTL [CTL] Prof. Jung-Wook Cho: Effect of Zr addition on metastable Liquid-Liquid Phase Separation of Cu-Fe alloys The liquid-liquid phase separation (LLPS) behavior was investigated in Cu-Fe alloys that consisted of 60 wt % or 80 wt % Cu and balance iron, without or with addition of 1 wt% Zr. Both Zr-free alloys clearly showed LLPS at metastable spinod..

작성자 최고관리자 작성일 2022-02-22
79

CTL [CTL] Prof. Jung-Wook Cho: Numerical modeling of oxide particle evolution during additive manufacturing In this study, oxide particle evolution during additive manufacturing was modelled to elucidate the evolution and suggest effective ways to increase oxide-dispersion strengthening. The model coupled the Kampmann and Wagner numerical model w..

작성자 최고관리자 작성일 2022-02-08
78

CSL [CSL] Prof.Youn-Bae Kang: Simultaneous Analysis of Soluble and Insoluble Oxygen Contents in Steel Specimens Using Inert Gas Fusion Infrared Absorptiometry In order to evaluate cleanliness of steel samples which contain oxygen in two different forms - chemically dissolved form and physically dispersed form in steel matrix, identification of each oxygen in the steel is important. A simple but p..

작성자 최고관리자 작성일 2022-01-13
77

CSL [CSL] Prof.Youn-Bae Kang: Phase equilibria of Al2O3–TiOx system under various oxygen partial pressure: Emphasis on stability of Al2TiO5–Ti3O5 pseudobrookite solid solution Phase equilibria of Al2O3–TiOx system were experimentally determined in a wide range of T and PO2: 1300 °C ≤T≤ 1600 °C and −16.6≤logPO2≤−8.0 (in atm). X-Ray diffraction and electron probe micro-analysis were employed to obtain equilibr..

작성자 최고관리자 작성일 2022-01-12
76

EMRL [EMRL]Prof. Kyu-Young Park: Elucidating and Mitigating High-Voltage Degradation Cascades in Cobalt-Free LiNiO2 Lithium-Ion Battery Cathodes LiNiO2 (LNO) is a promising cathode material for next-generation Li-ion batteries due to its exceptionally high capacity and cobalt-free composition that enables more sustainable and ethical large-scale manufacturing. However, its poo..

작성자 최고관리자 작성일 2021-12-20
75

PEL [PEL]Prof. Young-Seek Yoon: The comprehensive evaluation of available pilot-scale H2S abatement process in a coke-oven gas: Efficiency, economic, energy, and environmental safety (4ES) This study implemented the comprehensive evaluation of desulfurization efficiency-energy potential-economic-safety into three different processes for removing hydrogen sulfide from coke oven gas. Three different processe..

작성자 최고관리자 작성일 2021-12-20
74

PEL [PEL]Prof. Young-Seek Yoon: [PEL]Prof. Young-Seek Yoon: An integrative process of blast furnace and SOEC for hydrogen utilization: Techno-economic and environmental impact assessment This study investigates Bunsen reaction in the sulfur-iodine (SI) cycle for optimal conditions and specification of equipment in terms of the maximum HI yield and the least impurities in HIx (mixture of HI, I2 and H2O), the r..

작성자 최고관리자 작성일 2021-12-13
73

PEL [PEL]Prof. Young-Seek Yoon: An integrative process of blast furnace and SOEC for hydrogen utilization: Techno-economic and environmental impact assessment The steel sector is one of the most carbon-intensive industries, and the sustainable strategies to reduce CO2 emission on integrated mill plants are discussed continuously. By renewable H2 utilization on blast furnace (BF), it is ..

작성자 최고관리자 작성일 2021-12-08
72

ADL [ADL]Prof. Yoon-Uk Heo: Comparative study on the specimen thickness measurement using EELS and CBED methods Two thickness measurement methods using an electron energy loss spectroscopy (EELS) and 10a convergent beamelectron diffraction (CBED) were compared in an Fe-18Mn-0.7C alloy. The thin foil specimen was firstly tilted tosatisfy 10a two-beam ..

작성자 최고관리자 작성일 2021-12-01
71

MRL [MRL] Prof. Chong Soo Lee:Enhancing low-cycle fatigue life of commercially-pure Ti by deformation at cryogenic temperature In this study, the low-cycle fatigue behavior of a cryogenic-rolled commercially pure titanium alloy was investigated, and compared with those of undeformed and room-temperature rolled ones. The amounts of deformation twins increased to >..

작성자 최고관리자 작성일 2021-11-11
70

MRL [MRL] Prof. Chong Soo Lee: Microstructural evolution and mechanical properties of nanocrystalline Fe–Mn–Al–C steel processed by high-pressure torsion In this study, microstructural evolution and mechanical properties of Fe–Mn–Al–C steel were investigated with the variation of shear strain imposed by high-pressure torsion (HPT). Two different initial grain sized steels were used..

작성자 최고관리자 작성일 2021-11-02
69

MRL [MRL] Prof. Chong Soo Lee: Effect of bainite fraction on hydrogen embrittlement of bainite/ martensite steel The paper quantifies how the fraction of bainite in dual-phase (bainite/martensite) steel affects its resistance to hydrogen embrittlement (HE). For this purpose, three steels that had different amounts (0, 0.9, and 1.8&..

작성자 최고관리자 작성일 2021-10-27

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