Modelling of microstructural evolution and prediction of mechanical properties of plain carbon strip steel in hot rolling process

IMR OpenIR

	Modelling of microstructural evolution and prediction of mechanical properties of plain carbon strip steel in hot rolling process
	X. C. Sha; C. L. Mo; D. Z. Li; Y. Y. Li
	2004
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	20 期号:5 页码:501-505
摘要	Based on hot rolling production line of strip steel, the off-line in-house software, termed as ROLLAN (Rolling Analysis), is developed. The code is mainly used to predict the evolution of temperature, rolling force, fraction and grain size of recrystallization, fraction and grain size of phase transformation and final mechanical properties. Almost all the processing parameters affecting microstructure and mechanical properties in the schedule from reheating to the coiling process are considered in detail. Self-learning coefficient is adopted to adjust the deviation between predicted and measured temperatures, such as roughing exit temperature (RT2), finishing exit temperature (FT7) and coiling temperature (CT). Due to the application of low-speed-threading,increasing-speed-rolling and decreasing-speed delivery process during finishing rolling and different cooling condition, after coiling the thermal-mechanical history of different position, along strip longitudinal direction is different resulting in inhomogeneous mechanical properties. So the segments are divided along longitudinal direction to identify the variation of microstructure and mechanical properties. An example of plain carbon strip steel Q235 with various thickness is used to compare the calculated mechanical properties with measured ones. For the specific grade of Q235, the maximum deviation of tensile strength is less than 10.3 MPa, the yield strength is less than 13.2 MPa, and elongation is less than 1.99%. Further work will focus on the on-line application and consider the effect of macrosegregation and sulfur content of cast slab.
部门归属	chinese acad sci, inst met res, shenyang 110016, peoples r china. shenyang inst technol, shenyang 110168, peoples r china. anshan iron & steel grp corp, anshan 114021, peoples r china.;li, dz (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;dzli@imr.ac.cn
关键词	Microstructural Evolution Hot Rolling Mechanical Properties Modeling
URL	查看原文
WOS记录号	WOS:000224256700005
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/35539
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. C. Sha,C. L. Mo,D. Z. Li,et al. Modelling of microstructural evolution and prediction of mechanical properties of plain carbon strip steel in hot rolling process[J]. Journal of Materials Science & Technology,2004,20(5):501-505.
APA	X. C. Sha,C. L. Mo,D. Z. Li,&Y. Y. Li.(2004).Modelling of microstructural evolution and prediction of mechanical properties of plain carbon strip steel in hot rolling process.Journal of Materials Science & Technology,20(5),501-505.
MLA	X. C. Sha,et al."Modelling of microstructural evolution and prediction of mechanical properties of plain carbon strip steel in hot rolling process".Journal of Materials Science & Technology 20.5(2004):501-505.