Effects of Silicon Content and Intercritical Annealing on Manganese Partitioning in Dual Phase Steels

Steels of constant manganese and carbon contents with silicon content of 0.34 %- 2.26% were cast. The as-cast steels were then hot rolled at 1 100 ℃ in five passes to reduce the cast ingot thickness from 80 to 4 mm, air cooled to room temperature and cold rolled to 2 mm in thickness. Dual phase micr...

Full description

Saved in:
Bibliographic Details
Published in:Journal of iron and steel research, international international, 2010-05, Vol.17 (5), p.44-50
Main Authors: Nouri, A., Saghafian, H., Kheirandish, Sh
Format: Article
Language:English
Subjects:
Annealing
Applied and Technical Physics
Austenite
dual phase steel
Dual phase steels
Engineering
Ferrite
intercritical annealing temperature
Machines
Manganese
Manufacturing
Materials Engineering
Materials Science
Metallic Materials
Partitioning
Physical Chemistry
Processes
Silicon
Steels
体积分数
双相钢
固定碳含量
硅含量
能量色散谱仪
退火温度
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Steels of constant manganese and carbon contents with silicon content of 0.34 %- 2.26% were cast. The as-cast steels were then hot rolled at 1 100 ℃ in five passes to reduce the cast ingot thickness from 80 to 4 mm, air cooled to room temperature and cold rolled to 2 mm in thickness. Dual phase microstructures with different volume fraction of martensite were obtained through the intercritical annealing of the steels at different temperatures for 15 min followed by water quenching. In addition to intercritical annealing temperature, silicon content also altered the volume fraction of martensite in dual phase steels. The partitioning of manganese in dual phase silicon steels was investigated using energy-dispersive spectrometer （EDS）. The partitioning coefficient, defined as the ratio of the amounts of alloying element in the austenite to that in the adjacent ferrite, for manganese increased with increasing intercritieal annealing temperature and silicon content of steels. It was also found that the solubility of manganese in ferrite and austenite decreased with increasing intereritical temperature. The results were discussed by the diffusivity and the solubility of manganese in ferrite and austenite existed in dual phase silicon steels.
ISSN:1006-706X
2210-3988
DOI:10.1016/S1006-706X(10)60098-2