Effects of Process Conditions on Crack Healing in 30Cr2Ni4MoV Steel during Hot Forging

摘要：

　　Internal cracks in 30Cr2Ni4MoV steel were produced by compressing cylindrical sample with drilled hole.In order to consider the effects of deformation degree,temperature,strain rate and holding time on the crack healing,the hot compression tests were performed on Gleeble-1500thermo-simulation machine under different process conditions.By in situ observation under optical microscope and scanning electron microscope,effects of process condition on crack healing and the behaviours of crack healing were revealed successfully:(1) the result of crack healing improves as the melt temperature,reduction and holding time increase,(2) the effect of crack healing decreases as the strain rate increases.By the energy dispersive spectroscopy,it is also found that the chemical composition of the healed crack area is different from that of the matrix.

关键词： Process Condition Crack Healing 30Cr2Ni4MoV Steel Hot Forging

作者: Xiaoxun Zhang Tuo Lin Shuangshuang Zhu Shengling Zhang ZhenWang Lei Ha

作者单位: Schoolof Material Engineering, Shanghai University of Engineering Science, Shanghai, China201620

会议类型: 国际会议

会议名称: the 2012 International Conference on Frontiers of Mechanical Engineering and Materials Engineering (机械工程与材料工程国际会议())

会议地点: 香港

会议语种:英文

页码: 854-857

在线出版日期: 2012-07-27（万方平台首次上网日期，不代表论文的发表时间）