MICROSCOPIC MATERIAL CHARACTERISTICS GOVERNING THE MACROSCOPIC FATIGUE PERFORMANCE OF COLD DRAWN WIRES

摘要：

This paper analyzes how the cold drawing process influences the fatigue behaviour of eutectoid steel, with special emphasis on the role of microstructural changes induced during such a manufacturing process. Fatigue cracks are transcollonial and exhibit a preference for fracturing pearlitic lamellae, with non-uniform crack opening displacement values, microdiscontinuities, branchings, bifurcations and frequent local deflections that create microstructural roughness. The net fatigue surface increases with cold drawing due to the higher angle of crack deflections.

作者: J. Toribio B. González J.C. Matos F.J. Ayaso

作者单位: Department of Materials Engineering, University of Salamanca, EPS, Campus Viriato, Avda Requejo 33, Department of Materials Engineering, University of Salamanca

会议类型: 国际会议

会议名称: 第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-10-15（万方平台首次上网日期，不代表论文的发表时间）