ANISOTROPIC FRACTURE PERFORMANCE OF COLD DRAWN WIRES

摘要：

The work studies the anisotropic fracture behavior of cold drawn prestressing steels that exhibit exfoliation fracture consisting of oriented and enlarged cleavage, its orientation being parallel to the cold drawing axis and with river patterns in such a direction. Using computerassisted image analysis, a geometric relationship was found between this special cleavage and the conventional cleavage surface, which indicates that the fracture micromechanisms in both cases are also similar and allows a definition of the critical fracture unit in the drawn material as the pearlite colony more than the prior austenite grain. Thus the slender pearlitic colonies become the actual microstructural fracture units and determine the size of the enlarged cleavage facets characteristics of exfoliation fracture in cold drawn steels.

作者: J. Toribio 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）