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Design of Rolling Path Schedule for Refinement of Austenite Grain

오스테나이트 결정립 미세화를 위한 후판 압연 패스 스케줄의 설계

Hong, Chang-Pyo;Park, Jong-Jin
홍창표;박종진

  • Published : 2001.11.01

Abstract

In the present investigation, it was attempted to design the rolling pass schedule fur a clean steel of 0.1C-1.5Mn-0.25Si with the objective of the austenite grain refinement. As the method of approach, a coupled mathematical modeling technique was proposed which consists of a recrystallization model and a flow stress modes. The validity of the coupled model was examined through comparison with results of continuous and discontinuous compression tests at various temperatures, strains and strain rates. The coupled model was incorporated with the finite element method to set up a systematic design methodology far the rolling path schedule for austenite grain refinement. Two path schedules were obtained and discussed in the paper with regard to rolling path time, average grain size, grain size deviation in thickness, etc.

Keywords

Recrystallization;Hot Rolling;Finite Element Method;Process Design;Grain Refinement

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