바나듐 첨가에 의한 저탄소 구조용강의 강화Strengthening of 0.25%C Low Carbon Structural Steels by Vanadium Addition
- Other Titles
- Strengthening of 0.25%C Low Carbon Structural Steels by Vanadium Addition
- Authors
- 이상옥; 이현권; 이상우
- Issue Date
- 2008
- Publisher
- 한국열처리공학회
- Keywords
- Carbon steel; Vanadium; Strengthening; Microstructure; Mechanical property
- Citation
- 열처리공학회지, v.21, no.2, pp 79 - 86
- Pages
- 8
- Journal Title
- 열처리공학회지
- Volume
- 21
- Number
- 2
- Start Page
- 79
- End Page
- 86
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/22096
- ISSN
- 1225-1070
2508-4046
- Abstract
- As a basic research for developing 600 MPa yield strength reinforcing steel bars, the strengthening of
0.25 wt.% carbon steel by vanadium addition was studied. The changes of microstructure and mechanical properties
were investigated for the specimen V0 (0.00 wt.% V), V1 (0.03 wt.% V) and V2 (0.06 wt.% V) processed
by various heat treatments. To set the heat treatment conditions, the continuous cooling transformation (CCT)
curves were drawn for austenitizing temperatures of 900˚C and 1100˚C. For specimens tempered at 600˚C after
quenching from 900˚C and 1100˚C, yield strength was increased by 19 MPa and 21 MPa for 0.01 wt % V addition,
and tensile strength was increased by 25 MPa and 28 MPa for 0.01 wt % V addition, respectively. Also, for
0.06 wt.% V added specimens tempered after quenching and normalized, tensile strength was increased by 50
MPa and 30 MPa for increasing austenitizing temperature of 100˚C, respectively.
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