Microstructure Evolution in Nb-Ti Micro-Alloyed Steel during Hot Compression and Hot Rolling Simulation

Abstract:

Based on a improved mathematic model of predicting austenite grain size of hot rolled Nb-Ti micro-alloyed steel, a module for calculating microstructure evolution in the steel during hot-forming process was developed. To evaluate the recrystallization behavior according to the proposed model during plate multi-pass hot rolling, the multi-pass hot compression and its FE analysis in couple with the newly determined model were conducted. It indicated that the present models were capable of simulating the multi-pass hot compression and the actual multi-pass rolling process. After simulating an actual rolling process in factory by using the above models, evolution laws of microstructure were analyzed. Simulation results of microstructure had a good agreement with the measured ones.

• Periodical: Applied Mechanics and Materials (Volumes 395-396)
• Pages: 342-347
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.395-396.342
• Online since: September 2013
• Authors: Bin Shen, Song He Zhu, Heng Hua Zhang
• Keywords: Hot Compression, Hot Rolling Simulation, Microalloyed Steel, Microstructure Evolution

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