EFFECT OF DEFORMATION-INDUCED TRANSFORMATION PROCESS ON FERRITE GRAIN SIZE AND VOLUME FRACTION IN STEEL 12CR1MOV
Effect of deformation induced transformation (DIT) process on ferrite grain size and ferrite transformation volume fraction in the refractory low alloy steel 12Cr1MoV by controlled rolling and controlled cooling technology were experimentally studied. Simulation experiments of hot deformation were carried out with the Gleeble-1500 system. Single-pass and multi-pass hot rolling process with different deformation temperature, deformation reduction, strain rate and cooling rate were performed separately. The ferrite grain size decreased and the ferrite volume fraction increased with decreasing deformation temperature, and the extra-fine ferrite grain about 1.01μm was obtained when the deformation temperature reached 780℃. Higher deformation reduction resulted finer ferrite grain size and higher ferrite volume fraction. Both the ferrite grain size and ferrite volume fraction decreased with increasing strain rate. The ferrite grain size decreased but the ferrite volume fraction didnt change much when the cooling rate increased. The grain size and the ferrite volume fraction were improved more by three-passes than two-passes rolling. The mechanism of grain refinement by DIT was discussed.
Deformation induced transformation (DIT) grain size volume fraction grain refinement
QINGFEN LI XIUFANG CUI HONGBIN CHEN
College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin, 150001, Peo College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin, 15
国际会议
第五届先进材料与加工国际会议(Fifth International Conference on Advanced Materials and Processing ICAMP-5)
哈尔滨
英文
1197-1202
2008-09-03（万方平台首次上网日期，不代表论文的发表时间）