Development of Al-killed/Ti stabilized steels

7th International Congress of Engineering Physics

物理学;工业技术

Ramirez-Ledesma, A.L.^1 ; Aguilar-Mendez, M.A.^1 ; Rodriguez-Diaz, R.A.^1 ; Aramburo, G.^2 ; Juarez-Islas, J.A.^1

Instituto de Investigaciones en Materiales, Universidad Nacional Autonoma de Mexico, Ciudad Universitaria, Del. Coyoacan, Mexico, D.F.

C.P.04510, Mexico^1

Facultad de Quimica, Universidad Nacional Autonoma de Mexico, Ciudad Universitaria, Del. Coyoacan, Mexico, D.F.

C.P.04510, Mexico^2

关键词: Automotive applications;    Cold-rolled;    Electric arc furnace;    Elongated grains;    Hot-rolled;    Interstitial free steel;    Steel plates;    Titanium sulfide;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/582/1/012008/pdf
DOI  :  10.1088/1742-6596/582/1/012008

学科分类：工业工程学

来源: IOP

【 摘 要 】

Several Al-killed/Ti-stabilized low carbon steels were developed in a Mexican steel industry with the aim of obtaining an interstitial free steel for automotive applications. The steelmaking route involved the use of 100% sponge iron which was feed into an electric arc furnace, vacuum degassed, ladle treated and continuously casted. The resulting slabs were then hot rolled at 1100 °C and coiled at 650 °C. Then, the steel plates were cold rolled at room temperature and sheets annealed at 700 °C. As-cast micro structure showed the presence of α-ferrite with titanium nitrides in matrix and grain boundaries while in the ashot rolled condition, elongated grains showed the presence of titanium nitrides, titanium sulfides and titanium carbosulfides. The annealed sheets showed, additionally to the other precipitates, the presence of titanium carbides. Microstructure, texture, the Lankford ratio and mechanical properties of fully recrystallized coils fulfilled the target properties established by the automobile industry.