EFFECT OF TEMPERING TEMPERATURE ON THE LOW TEMPERATURE TOUGHNESS OF THE Cr-Mo ALLOYED PRESSURE VESSEL STEELS

摘要：

　　The effect of tempering temperature on the low temperature toughness of the Cr-Mo alloyed pressure vessel steels containing 0.54%and 1.55%Si during the normalizing and tempering heat treatment was investigated by optical and scanning electron microscopes.The bainite-ferrite dual phase was obtained in both steels.As the tempering temperature increased from 650℃ to 700℃,the average Charpy absorbed energy(-30℃)was decreased from 158 J to 91 J in the 0.54%Si steel whereas it was decreased from 83 J to 31 J the 1.55%Si steel.The low temperature toughness decreased with increasing tempering temperature,which was probably attributed to a sharp increase of the ferrite volume fraction.Results also showed that the silicon content had much influence on the low temperature toughness.

关键词： Steels Silicon Toughness Carbides Cr-Mo alloying

作者: Z.C.Zhang L.X.Zhou L.H.Ruan J.A.Qiu K.M.Wu

作者单位: Hubei Xinyegang Steel Co.,Ltd.,Huangshi 435001,China The State Key Laboratory for Refractory Material and Metallurgy Hubei Collaborative Innovation Cente The State Key Laboratory for Refractory Material and Metallurgy Hubei Collaborative Innovation Cente

会议类型: 国际会议

会议名称: Energy Materials 2014(第一届能源材料国际会议)

会议地点: 西安

会议语种:英文

页码: 839-844

在线出版日期: 2014-11-04（万方平台首次上网日期，不代表论文的发表时间）