A Study on Fracture Properties of Multiphase Microstructures of 42CrMo4 Steel

摘要：

An investigation into the fracture properties of tempered martensite ? and ferrite-bainite-martensite (FBM) microstructures was carried out for 42CrMo4 steel, with a particular focus on the role of inter-phase FBM microstructure boundaries. The fractographic investigations showed the fracture mechanism of transgranular cleavage for the FBM microstructures. The obvious presence of bright facets on broken sample surfaces was indicative of the effect of inter-phase boundaries on the cleavage fracture. The appearing of bright facet surfaces in FBM microstructures was attributed to the high concentration of ferrite/bainite and ferrite/martensite inter-phase boundaries.

关键词： 42CrMo4 steel Ferrite-Bainite-Martensite Plain Strain Fracture Toughness Cleavage Fracture

作者: A.Salemi A.Abdollah-zadeh M.Mirzaei H.Assadi

作者单位: Department of Materials Eng., Tarbiat Modares University, P.O.Box: 14115-143, Tehran, Iran Department of Mechanical Eng., Tarbiat Modares University, P.O.Box: 14115-143, Tehran, Iran

会议类型: 国际会议

会议名称: The Fifth International Conference on Physical and Numerical Simulation of Materials Processing(第五届材料与热加工物理模拟及数值模拟国际会议)

会议地点: 郑州

会议语种:英文

在线出版日期: 2007-10-23（万方平台首次上网日期，不代表论文的发表时间）