Effects of Ni and Mn addition on critical crack tip opening displacement (CTOD) of weld-simulated heat-affected zones of three high-strength low-alloy (HSLA) steels von Lee, Seok Gyu, Lee, Dong Ho, Sohn, Seok Su, Kim, Woo Gyeom, Um, Kyung-Keun, Kim, Ki-Seok, Lee, Sunghak

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Effects of Mo addition on crack tip opening displacement (CTOD) in heat affected zones (HAZs) of high-strength low-alloy (HSLA) steels von Lee, Seok Gyu, Kim, Bohee, Kim, Woo Gyeom, Um, Kyung-Keun, Lee, Sunghak

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Effects of martensite-austenite constituent on crack initiation and propagation in inter-critical heat-affected zone of high-strength low-alloy (HSLA) steel von Lee, Seok Gyu, Sohn, Seok Su, Kim, Bohee, Kim, Woo Gyeom, Um, Kyung-Keun, Lee, Sunghak

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Effects of local-brittle-zone (LBZ) microstructures on crack initiation and propagation in three Mo-added high-strength low-alloy (HSLA) steels von Lee, Seok Gyu, Kim, Bohee, Sohn, Seok Su, Kim, Woo Gyeom, Um, Kyung-Keun, Lee, Sunghak

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Formation of Ultrafine Ferrite by Strain-induced Dynamic Transformation in Plain Low Carbon Steel von Choi, Jong-Kyo, Seo, Dong-Han, Lee, Jae-Sang, Um, Kyung-Keun, Choo, Wung-Yong

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Small-scale mechanical property characterization of ferrite formed during deformation of super-cooled austenite by nanoindentation von Ahn, Tae-Hong, Um, Kyung-Keun, Choi, Jong-Kyo, Kim, Do Hyun, Oh, Kyu Hwan, Kim, Miyoung, Han, Heung Nam

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Ferrite Transformation during Deformation of Super-cooled Austenite von Lee, Hu-Chul, Um, Kyung-Keun

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Effect of deformation induced transformation of ɛ-martensite on ductility enhancement in a Fe-12 Mn steel at cryogenic temperatures von Kim, Jung-Su, Jeon, Jong Bae, Jung, Joong Eun, Um, Kyung-Keun, Chang, Young Won

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Effect of Deformation Induced Transformation of ε-Martensite on Ductility Enhancement in a Fe-12 Mn Steel at Cryogenic Temperatures von Jung-Su Kim, Jong Bae Jeon, Joong Eun Jung, Kyung-Keun Um, Young Won Chang

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Effect of Initial Sheet Thickness on Shear Deformation in Ferritic Rolling of IF-Steel Sheets von Um, Kyung-Keun, Jeong, Hyo-Tae, An, Joong-Kyu, Lee, Dong Nyung, Kim, Gyosung, Kwon, Ohjoon

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An upper bound solution of tube drawing von Um, Kyung-Keun, Dong Nyung Lee

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Effect of deformation induced transformation of -martensite on ductility enhancement in a Fe-12 Mn steel at cryogenic temperatures von Kim, Jung-su, Jeon, Jong Bae, Jung, Joong Eun, Um, Kyung-keun, Chang, Young Won

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Effect of deformation induced transformation of -martensite on ductility enhancement in a Fe-12Mn steel at cryogenic temperatures von Kim, Jung-Su, Jeon, Jong Bae, Jung, Joong Eun, Um, Kyung-Keun, Chang, Young Won

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HIGH-STRENGTH STEEL MATERIAL HAVING EXCELLENT LOW-TEMPERATURE STRAIN AGAIN IMPACT PROPERTIES AND METHOD FOR MANUFACTURING SAME von Lee, Hong-Ju, Um, Kyung-Keun, Kim, Woo-Gyeom

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High-strength steel material having excellent low-temperature strain aging impact properties and welding heat-affected zone impact properties and method for manufacturing same von Um, Kyung-Keun, Kim, Woo-Gyeom

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High-strength steel plate for pressure vessel having excellent toughness after post weld heat treatment and manufacturing method thereof von Kim, Dae-Woo, Um, Kyung-Keun

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STEEL MATERIAL HAVING EXCELLENT CORROSION RESISTANCE IN DEW CONDENSATION ENVIRONMENT CONTAINING SULFIDE AND METHOD FOR PRODUCING SAME von Um, Kyung-Keun, Park, Jin-Ho

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High-strength steel material having enhanced resistance to crack initiation and propagation at low temperature and method for manufacturing the same von Um, Kyung-Keun, Chae, Jin-Woo, Kim, Woo-Gyeom, Cha, Woo-Yeol

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High-strength steel having excellent fracture initiation resistance and fracture propagation arrestability at low temperature and method of manufacturing the same von Um, Kyung-Keun, Chae, Jin-Woo, Kim, Woo-Gyeom, Cha, Woo-Yeol

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STRUCTURAL STEEL MATERIAL AND METHOD FOR MANUFACTURING SAME von MUN, Hae-Sun, UM, Kyung-Keun

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