Effects of rolling temperature on the microstructure and mechanical properties of Ti-Mo microalloyed hot-rolled high strength steel
SCIE
SCOPUS
- Title
- Effects of rolling temperature on the microstructure and mechanical properties of Ti-Mo microalloyed hot-rolled high strength steel
- Authors
- Kim, YW; Kim, JH; Hong, SG; Lee, CS
- Date Issued
- 2014-05-27
- Publisher
- ELSEVIER SCIENCE SA
- Abstract
- The effects of rolling condition on the microstructure and mechanical properties of Ti-Mo microalloyed hot-rolled high strength steel were investigated by varying rolling temperature from austenite recrystallization region to austenite+ferrite dual phase region. The results revealed that rolling temperature plays a decisive role in the mechanical properties by significantly affecting the characteristics of grain refinement and precipitation. Conducting the rolling in the regions through austenite recrystallization region to austenite non-recrystallization region was able to provide desirable microstructural features for impact properties as well as for strength by inducing a homogeneous and fine grain structure, well developed dislocation structures inside grain, and relatively high number density of fine carbides, although precipitation hardening effect was somewhat reduced by strain-induced precipitation. (C) 2014 Elsevier B.V. All rights reserved.
- Keywords
- High strength low alloy (HSLA) steel; Thermomechanical controlled processing (TMCP); Rolling temperature; Grain refinement; Nanometer-sized carbide; STRAIN-INDUCED PRECIPITATION; CHARPY-IMPACT-TOUGHNESS; PLASTIC-DEFORMATION; SHEET STEEL; FERRITE; BEHAVIOR; AUSTENITE; KINETICS; NB; FRACTURE
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/13626
- DOI
- 10.1016/J.MSEA.2014.03.054
- ISSN
- 0921-5093
- Article Type
- Article
- Citation
- MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, vol. 605, page. 244 - 252, 2014-05-27
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