Optimum Pass Design of Bar Rolling for Producing Bulk Ultrafine-grained Steel by Numerical Simulation

被引:6
作者
Inoue, Tadanobu [1 ]
机构
[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
来源
PRICM 7, PTS 1-3 | 2010年 / 654-656卷
关键词
Rolling; groove design; finite element analysis; ultrafine-grained structure; strain distribution; low-carbon steel; LOW-CARBON STEEL; STRAIN DISTRIBUTION; CALIBER; DEFORMATION; EVOLUTION; TEXTURE;
D O I
10.4028/www.scientific.net/MSF.654-656.1561
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The groove design for creating ultrafine-grained low-carbon steel through a caliber rolling process was studied from the viewpoint of the large strain accumulation and cross-sectional shape variation in a bar. A three-dimensional finite element analysis was employed for this purpose. The caliber rolling process of foval (flat-like-oval)/square type was proposed as a method to efficiently introduce a large strain in material. The relationship among the foval configuration, strain, and cross-sectional shape was examined in the caliber rolling. The influence of the equivalent strain distribution by 1st pass (foval rolling) depends strongly on the strain distribution and a cross-sectional shape by 2nd pass, and the foval configuration to accumulate a large strain efficiently was shown. The optimum pass schedule to fabricate a 13mm square bar of ultrafine-grained steel from a 24 mm square bar by caliber rolling at warm working temperatures was proposed.
引用
收藏
页码:1561 / 1564
页数:4
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