Effect of bainite on the microstructure and mechanical properties of ferrite-martensite-bainite steels
- 1. Jeonbug National Univ., Jeonju (Republic of Korea)
- 2. Korea Advanced Inst. of Science and Technology, Seoul (Republic of Korea)
- 3. Seoul National Univ. (Republic of Korea). Coll. of Engineering
Description
The effect of volume fraction and morphology of bainite on the microstructure and mechanical properties of Fe-0.1C-1.6Mn-0.8Si tri-phase(ferrite-bainite-martensite) steels was investigated. The volume fraction and morphology of bainite were controlled by isothermal holding for different periods at two levels of bainite transformation temperature before quenching in water. The size of martensite particles became finer with increasing volume fraction of bainite in the tri-phase steel. Lower bainite and upper bainite were observed in the tri -phase steel by transmission electron microscopy. The improvement in ductility (elongation and reduction of area) with increasing volume fraction of bainite in the tri-phase steel was attributed to dispersion of fine martensite particles and less hard bainite, that resulted in higher work hardening and relaxation of stress concentration. (Author)
Additional details
Publishing Information
- Journal Title
- Journal of the Korean Institute of Metals
- Journal Volume
- 26
- Journal Issue
- 1
- Series
- J. Korean Inst. Met.
- Journal Page Range
- 23-28
- CODEN
- KUHCA
INIS
- Country of Publication
- Korea, Republic of
- Country of Input or Organization
- Korea, Republic of
- INIS RN
- 20018057
- Subject category
- S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
- Descriptors DEI
- BAINITE; FERRITIC STEELS; MARTENSITE; OPTICAL ACTIVITY; PHASE TRANSFORMATIONS; THERMAL ANALYSIS; TRANSITION TEMPERATURE
- Descriptors DEC
- ALLOYS; CARBON ADDITIONS; IRON ALLOYS; IRON BASE ALLOYS; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; STEELS; THERMODYNAMIC PROPERTIES