Zobrazeno 1 - 10
of 169
pro vyhledávání: '"Byoungchul Hwang"'
Publikováno v:
Archives of Metallurgy and Materials, Vol vol. 69, Iss No 2, Pp 415-419 (2024)
This study describes how microstructural constituents affected the hydrogen embrittlement resistance of high-strength pipeline steels. The American Petroleum Institute (API) X60, X70, and X80 pipeline steels demonstrated complicated microstructure co
Externí odkaz:
https://doaj.org/article/2827280bc8a943caa847cccfa404b4c5
Publikováno v:
Archives of Metallurgy and Materials, Vol vol. 69, Iss No 1, Pp 141-144 (2024)
This study explores the hydrogen embrittlement behaviour of two Ni-based superalloys using electrochemical hydrogen charging. Two types of tensile specimens with different geometry for the Haynes 617 and Hastelloy X alloys were electrochemically hydr
Externí odkaz:
https://doaj.org/article/05b92b87478f4f0194c3ddff878a5773
Publikováno v:
Metals, Vol 14, Iss 10, p 1171 (2024)
This study investigates the role of coalesced bainite in enhancing the hydrogen embrittlement resistance of tempered martensitic steels. By analyzing the microstructural characteristics and mechanical properties under varying cooling rates, it was fo
Externí odkaz:
https://doaj.org/article/45fb9bb2f0ea48059223b8946bf1c184
Publikováno v:
Materials, Vol 17, Iss 19, p 4887 (2024)
This study investigates the hydrogen embrittlement behavior of API X70 linepipe steel. The microstructure was primarily composed of a dislocation-rich bainitic microstructure and polygonal ferrite. Slow strain-rate tests (SSRTs) were performed under
Externí odkaz:
https://doaj.org/article/f55d5e16a9a34f7d9adda49197cc8bab
Publikováno v:
Journal of Materials Research and Technology, Vol 26, Iss , Pp 3558-3570 (2023)
In this study, a novel multi-step heat treatment method, including intercritical annealing and tempering, is proposed to improve the low-temperature toughness of Fe-6.5Mn-0.08C medium-manganese (Mn) steel. The effects of the subsequent tempering trea
Externí odkaz:
https://doaj.org/article/ba7df6ff9b9b4bd099055f224c4e300a
Publikováno v:
Archives of Metallurgy and Materials, Vol vol. 67, Iss No 4, Pp 1491-1495 (2022)
The present research deals with the effect of pre-strain on the hydrogen embrittlement behavior of intercritically annealed medium-Mn steels. A slow strain-rate tensile test was conducted after hydrogen charging by an electrochemical permeation metho
Externí odkaz:
https://doaj.org/article/3f124e27442949eab148c2138cf459d8
Publikováno v:
Archives of Metallurgy and Materials, Vol vol. 67, Iss No 4, Pp 1487-1490 (2022)
In this study, the effect of the coiling temperature on the tensile properties of API X70 linepipe steel plates is investigated in terms of the microstructure and related anisotropy. Two coiling temperatures are selected to control the microstructure
Externí odkaz:
https://doaj.org/article/a69e2ea4e1e6495a9c02750928d88911
Publikováno v:
Archives of Metallurgy and Materials, Vol vol. 67, Iss No 4, Pp 1497-1501 (2022)
In-situ observation of the transformation behavior of acicular ferrite in high-strength low-alloy steel using confocal laser scanning microscopy was discussed in terms of nucleation and growth. It is found that acicular ferrite nucleated at dislocati
Externí odkaz:
https://doaj.org/article/f2bb443c4f8043e798f874c601c38daa
Publikováno v:
Journal of Materials Research and Technology, Vol 19, Iss , Pp 2794-2798 (2022)
This study introduces a machine learning approach to predict the effect of alloying elements and test conditions on the hydrogen environment embrittlement (HEE) index of austenitic steels for the first time. The correlation between input features and
Externí odkaz:
https://doaj.org/article/6a9969fd5b2a4111ba7bd1e23f2ae7f4
Publikováno v:
Metals, Vol 13, Iss 12, p 1912 (2023)
In this study, the effect of subsequent heat treatment applied to high-strength low-alloy steel (HSLA) on the structure–property relationships was investigated. Tempering and intercritical annealing processes are introduced to elucidate the influen
Externí odkaz:
https://doaj.org/article/d230806c362e4b8598a1fdb4fa67082d