EFFECT OF COPPER CONTENT ON MECHANICAL-PROPERTIES OF CONTINUOUSLY ANNEALED EXTRA-LOW-CARBON TITANIUM-ADDED STEEL SHEETS

被引:37
作者
KISHIDA, K [1 ]
AKISUE, O [1 ]
机构
[1] NIPPON STEEL CORP LTD,SHEET & COIL RES LAB,HIMEJI 67111,JAPAN
来源
TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN | 1990年 / 76卷 / 05期
关键词
D O I
10.2355/tetsutohagane1955.76.5_759
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The effects of copper content and coiling temperature after hot-rolling on the mechanical properties of continuously annealed extra-low-carbon titanium-added IF steel sheets were studied in order to develop deep drawable sheet steels having tensile strength higher than 45 kgf/mm2. Tensile strength of the 1.36% copper added steel can be increased by about 15 kgf/mm2 by holding for 5 min at 550°C after recrystallization annealing. The recrystallization texture and r̄-value are affected not only by the copper content but also by the coiling temperature. The r̄-value of the 1.36% copper added steel sheet is kept high only when the steel is coiled at extremely low temperature by keeping copper in solution prior to cold rolling. Key words: continuous annealing; high strength steel sheet; deep drawability; extra low carbon titanium-stabilized steel; copper; r-value; coiling temperature.
引用
收藏
页码:759 / 766
页数:8
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