In the present study, low carbon ferritic and bainitic steels with different contents of Mo, Ti, and Nb were designed for bothseismic and fire-resistant applications. The microstructure of steels containing 0.3 wt% Mo–0.02 wt% Nb (‘A’ hereinafte...
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https://www.riss.kr/link?id=A108151735
Jung‑Ho Sim (Changwon National University) ; Tae‑Yeong Kim (Changwon National University) ; Jun‑Yeon Kim (Changwon National University) ; Chi‑Won Kim (Changwon National University) ; Jun‑Ho Chung (Hyundai Steel Company) ; Joonoh Moon (Korea Institute of Materials Science) ; Chang‑Hoon Lee (Korea Institute of Materials Science) ; Hyun‑Uk Hong (Changwon National University)
2022
English
KCI등재,SCI,SCIE,SCOPUS
학술저널
337-345(9쪽)
0
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
In the present study, low carbon ferritic and bainitic steels with different contents of Mo, Ti, and Nb were designed for bothseismic and fire-resistant applications. The microstructure of steels containing 0.3 wt% Mo–0.02 wt% Nb (‘A’ hereinafte...
In the present study, low carbon ferritic and bainitic steels with different contents of Mo, Ti, and Nb were designed for bothseismic and fire-resistant applications. The microstructure of steels containing 0.3 wt% Mo–0.02 wt% Nb (‘A’ hereinafter)was mainly composed of bainite. By contrast, the microstructure of steels with 0.2 wt% Mo–0.13 wt% Ti (‘B’ hereinafter)consisted of ferrite with a high density of nano-sized (Ti,Mo)-rich MX precipitates. The results showed that the bainiticmicrostructure (‘A’ steel) was quite favorable to high-temperature strength and thermal stability. The yield strength of ‘A’ steelat both room and 600 °C temperatures increased consistently with increasing thermal exposure time (600 °C/200–1000 h),since the precipitation of NbC particles occurred while maintaining bainitic ferrite platelets with a high density of dislocationsduring exposure. In the ‘B’ steel, the formation of nano-sized (Ti,Mo)-rich MX particles was effective to impededislocation movement, leading to excellent plasticity (lower yield ratio) at room temperature. However, their contributionto precipitation hardening was not so much at 600 °C, as compared to the bainitic strengthening. During low cycle fatiguetests at room temperature, the main different feature between the two steels is that the ‘A’ steel showed cyclic softeningwhile cyclic hardening was evident in the ‘B’ steel. The bainitic microstructure showed a better fatigue life due to increasedductility manifested by cyclic softening, by which dislocation cell was developed.
참고문헌 (Reference)
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학술지 이력
연월일 | 이력구분 | 이력상세 | 등재구분 |
---|---|---|---|
2023 | 평가예정 | 해외DB학술지평가 신청대상 (해외등재 학술지 평가) | |
2020-01-01 | 평가 | 등재학술지 유지 (해외등재 학술지 평가) | |
2009-12-29 | 학회명변경 | 한글명 : 대한금속ㆍ재료학회 -> 대한금속·재료학회 | |
2008-01-01 | 평가 | SCI 등재 (등재유지) | |
2005-01-01 | 평가 | 등재학술지 선정 (등재후보2차) | |
2004-01-01 | 평가 | 등재후보 1차 PASS (등재후보1차) | |
2002-01-01 | 평가 | 등재후보학술지 선정 (신규평가) |
학술지 인용정보
기준연도 | WOS-KCI 통합IF(2년) | KCIF(2년) | KCIF(3년) |
---|---|---|---|
2016 | 2.05 | 0.91 | 1.31 |
KCIF(4년) | KCIF(5년) | 중심성지수(3년) | 즉시성지수 |
1.03 | 0.86 | 0.678 | 0.22 |