CAJ | 학술논문

采用热力模拟试验机Gleeble-3500对一种铸态含氮M2高速钢在0.01~1.0 s-1及1000~1100℃条件下进行热压缩变形，获得了铸态含氮 M2高速钢的流变曲线并分析了变形后的显微组织特性。实验结果表明，铸态含氮 M2高速钢热变形过程中的能量消耗效率随应变速率的升高而降低，流变失稳区随应变量的增加向低应变速率和低温区域转变，热变形激活能为588.733 kJ/mol，同时得到了其热变形方程和热加工图，获得热加工最佳工艺窗口为0.01~1.0 s-1和1050~1100℃。
채용열력모의시험궤Gleeble-3500대일충주태함담M2고속강재0.01~1.0 s-1급1000~1100℃조건하진행열압축변형，획득료주태함담 M2고속강적류변곡선병분석료변형후적현미조직특성。실험결과표명，주태함담 M2고속강열변형과정중적능량소모효솔수응변속솔적승고이강저，류변실은구수응변량적증가향저응변속솔화저온구역전변，열변형격활능위588.733 kJ/mol，동시득도료기열변형방정화열가공도，획득열가공최가공예창구위0.01~1.0 s-1화1050~1100℃。
The hot compression deformation behavior of the as-cast AISI M2 high-speed steel containing nitrogen is investigated on the Gleeble-3500 simulator at a strain rate of 0.01~1.0 s 1 within the temperature range from 1 000 to 1 100℃. The flow curves are obtained and hot deformation microstructure is observed. The results show that the power dissipation efficiency decreases with strain rate, and the flow instability is extended to the lower strain rate and low temperature region with the increment of strain. The hot deformation activation energy of the steel is about 588.7 kJ/mol, and the hot deformation equation and processing map are ob-tained. The optimum processing window is offered showing the strain rate range of 0.01~1.0 s 1 and the temperature range of 1 050~1 100℃.