Zobrazeno 1 - 10
of 87
pro vyhledávání: '"Hu-Chul Lee"'
Publikováno v:
Metals and Materials International. 24:265-281
Extended Hall–Petch relationships for yield ( $$ \sigma_{y} $$ ), cleavage ( $$ \sigma_{\text{cl}} $$ ) and intergranular fracture ( $$ \sigma_{\text{ig}} ) $$ strengths of pure iron have been established through the direct calculation of the propo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4de3d403a532434f149d5e63ee3ac6f4
https://doi.org/10.1007/s12540-018-0026-6
https://doi.org/10.1007/s12540-018-0026-6
Autor:
Sunghwan Kim, Sung Jin Kang, Hu-Chul Lee, Heung Nam Han, Min-Ho Park, Miyoung Kim, Cheol-Woong Yang
Publikováno v:
Acta Materialia. 83:499-506
This study investigates the mechanism of the ω-to-α phase transformation in a titanium–molybdenum alloy. Using aberration-corrected high annular angle dark-field scanning transmission electron microscopy and density functional theory (DFT), the a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f1f59b6e6652783c6d615b1028b4674
https://doi.org/10.1016/j.actamat.2014.10.022
https://doi.org/10.1016/j.actamat.2014.10.022
Publikováno v:
Acta Materialia. 77:236-247
A new metallurgical process for fabricating ultrafine-grained alloys by a compositional pinning technique is proposed. A Fe–10Mn–0.2C alloy was prepared by vacuum induction melting, and the substitutional alloying element Mn was partitioned by an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45494ea72da7ef12bf1eb40213c9b34e
https://doi.org/10.1016/j.actamat.2014.05.057
https://doi.org/10.1016/j.actamat.2014.05.057
Autor:
Yoon-Uk Heo, Hu-Chul Lee
Publikováno v:
Philosophical Magazine. 93:4519-4531
The effects of Al addition on the precipitation and fracture behaviour of Fe–Mn–Ni alloys were investigated. With the increasing of Al concentration, the matrix and grain boundary precipitates changed from L10 θ-MnNi to B2 Ni2MnAl phase, which i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::647136fb1441df8d85d6666c65c22ab6
https://doi.org/10.1080/14786435.2013.834388
https://doi.org/10.1080/14786435.2013.834388
Publikováno v:
Metals and Materials International. 19:1203-1208
The influence of nickel on the neutron irradiation embrittlement of Ni-Mo-Cr reactor pressure vessel (RPV) steels was investigated using alloys containing nickel in the range of 0.9–3.5 wt%. In all investigated alloys, the neutron irradiation with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93fce41104273188a65430f940beb507
https://doi.org/10.1007/s12540-013-6007-x
https://doi.org/10.1007/s12540-013-6007-x
Publikováno v:
Metallurgical and Materials Transactions A. 43:3940-3945
The effect of grain boundary (GB) precipitates on the GB strength of an age-hardened Fe-7.8Mn-8.2Ni alloy was investigated. Premature intergranular fracture was observed after age hardening due to the precipitation of θ-MnNi precipitates at prior au
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e544e76ff605040706e46f27b9c3e5a1
https://doi.org/10.1007/s11661-012-1325-z
https://doi.org/10.1007/s11661-012-1325-z
Publikováno v:
Scripta Materialia. 66:45-48
An interstitial-free steel was austenitized and cooled in a high-pressure high-temperature apparatus. Despite its inherently negligible hardenability, an interstitial-free steel with a full martensitic structure could be obtained even without quenchi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ea1bef914cc26c536a75f38778f4756
https://doi.org/10.1016/j.scriptamat.2011.10.002
https://doi.org/10.1016/j.scriptamat.2011.10.002
Autor:
Hu Chul Lee, Yoon-Uk Heo
Publikováno v:
Materials Science Forum. 710:11-18
Grain boundary embrittlement and de-embrittlement observed in age hardening iron alloys were reviewed. Fe-Mn-Ni and Fe-Ni-Ti alloys show excellent hardening response during aging treatment. However these alloys all suffer grain boundary embrittlemnt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::517a32f946a8a56491912dce94691d84
https://doi.org/10.4028/www.scientific.net/msf.710.11
https://doi.org/10.4028/www.scientific.net/msf.710.11
Publikováno v:
Materials Science and Engineering: A. 530:183-190
The effect of Al and Mo addition on the development of microstructures and textures of dual phase steels for the usage in car outer panel was studied. The two elements were separately added to a base alloy to compare their effects on the microstructu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f2c424f081fcc1b1a9634388cbd7c4a
https://doi.org/10.1016/j.msea.2011.09.071
https://doi.org/10.1016/j.msea.2011.09.071
Autor:
Hu-Chul Lee, Young-Woon Kim, Kyu Hwan Oh, Dohyun Kim, Jun-Yun Kang, Tae-Hong Ahn, Sung Il Baik, Heung Nam Han, Seong Ho Han
Publikováno v:
ISIJ International. 51:130-136
EBSD mapping was used for phase analysis of multi-phase steels. Some products of austenite decomposition could be discriminated using a range of grain-average functions and properties derived from the map data. In DP steels, martensite could be extra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fc74f63d6635de666ff1dbbf68a3e7f
https://doi.org/10.2355/isijinternational.51.130
https://doi.org/10.2355/isijinternational.51.130