http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
허무영,석윤종 대한금속재료학회(대한금속학회) 1990 대한금속·재료학회지 Vol.28 No.7
The preferred orientations and microstructures of the cold rolled 0.004%C and 0.022%C steel were studied. The crystallographic deformation theory was applied to analyse the results of the x -ray measurements and TEM observations. It was found that the rolling texture of the steels could be described by a {111}//ND fiber and a $lt;110$gt;//ND fiber. The equiaxed cells developed by homogeneous slip might be a major deformation mechanism of the steels at low rolling reductions. At medium to high rolling reductions, however, the major deformation mechanism was changed to the formation of the microbands, which was developed by a localized inhomogeneous slip. As further increasing reduction, the deformation mechanism was changed consecutively as clustering of microbands, decreasing microband thickness, a rotation of microbands to the rolling direction and a development of shear bands in the hard grains.
블룸 연속주조에 있어서 경계밀착좌표계를 이용한 용강유동과 열전달의 연결해석
윤종규,소찬영,이중의,한승호,석윤종 대한금속재료학회(대한금속학회) 1996 대한금속·재료학회지 Vol.34 No.1
A 2-D coupled analysis of heat transfer and fluid flow was conducted in continuously cast bloom. Latent heat of fusion was considered by modifying the heat capacity/temperature relation, which is so called the effective heat capacity method. To consider the curved type geometry, boundary-fitted coordinate(BFC) system was employed. Water cooling in the mold was simulated by considering the known heat flux and the secondary cooling by considering air cooling and air-mist spray. In this study, the fluid flow and the temperature profile in the continuous casting system of bloom were simulated with the variation of casting speed, tundish superheat. Thus, the effects of casting variables on the distribution of surface temperature, shell thickness, metallurgical length were predicted.