Refining the Solidification Structure of TWIP Steel Using Ce-based Inclusions

摘要：

　　The evolution of solidification structure of TWIP steel in a commercial continuous caster has been simulated using a lab-scale casting simulator.Significant refining of solidification structure has been found due to the various inclusions such as oxide,sulfide,phosphide and their complex by addition of cerium in molten steel.Especially,there was a marked grain refinement effect for TWIP steel with 250ppm P and 0.3% Ce,which can be attributed to the pinning effect of inter-dendritic CeP inclusions.The main contribution of these non-metallic inclusions to the nucleation of austenite steel,and to the pinning of columnar dendrites have been discussed in detail based on thermodynamic and micro-structure assessments.

关键词： TWIP solidification structure columnar dendrite CeP

作者: CHO Jung-Wook LEE Soo-Yeon HEO Yoon-Uk

作者单位: Graduate Institute of Ferrous Technology, Pohang University of Science and Technology,Pohang, Korea

会议类型: 国际会议

会议名称: the 1st International Conference on Automobile Steel & The 3rd International Conference on High Manganese Steels (第一届国际汽车用钢大会暨第三届高锰钢国际会议)

会议地点: 成都

会议语种:英文

页码: 263-264

在线出版日期: 2016-11-16（万方平台首次上网日期，不代表论文的发表时间）