CAJ | 학술논문

通过Gleeble-1500D热模拟机来进行EQ47（460 MPa）钢的高温塑性研究，以1×10-3/s的变形速率，在600～1350℃的温度区间内以每50℃取一间隔做一组高温塑性试验.结果表明：在907～1270℃之间，断面收缩率均高于60%，钢的高温塑性良好，温度高于1270℃时，断面收缩率急剧下降，第Ⅲ脆性区在667～907℃之间，在此温度区间内存在明显的塑性低谷，断面收缩率最低值为29.44%.
통과Gleeble-1500D열모의궤래진행EQ47（460 MPa）강적고온소성연구，이1×10-3/s적변형속솔，재600～1350℃적온도구간내이매50℃취일간격주일조고온소성시험.결과표명：재907～1270℃지간，단면수축솔균고우60%，강적고온소성량호，온도고우1270℃시，단면수축솔급극하강，제Ⅲ취성구재667～907℃지간，재차온도구간내존재명현적소성저곡，단면수축솔최저치위29.44%.
The hot ductility behavior of Steel EQ47 was investigated by Gleeble-1500D hot simulator at the temperature range of 600~1 350 ℃ per 50 ℃ through high temperature tensile test at a constant true strain rate of 1 ×10-3s-1. The section reduction rate is more than 60 % at the temperatures of 907~1 270 ℃; tensile sample showed a good ductility; the third brittle zone is at the temperature of 666~907 ℃. The minimum reduction rate was 29.44%with poor ductility.