Fragmentation of As-drawn pearlitic steel wires during torsion tests

被引：14

作者：

Goes, B

Martin-Meizoso, A

Gil-Sevillano, J

Lefever, I

Aernoudt, E

机构：

[1] Ctr Estudios & Invest Tecn Guipuzcoa, E-20009 San Sebastian, Spain

[2] Escuela Super Ingn Ind, E-20009 San Sebastian, Spain

[3] NV Bekaert SA, Corp Res Ctr, B-8850 Zwevegem, Belgium

[4] Katholieke Univ Leuven, Dept Met & Mat Engn, B-3001 Heverlee, Belgium

来源：

ENGINEERING FRACTURE MECHANICS | 1998年 / 60卷 / 03期

关键词：

torsional fracture; fragmentation; microcracks; pearlitic steel wire; tyre-cord;

D O I：

10.1016/S0013-7944(98)00023-X

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

During free end torsion tests of cold drawn eutectoid steel wire, primary fracture frequently causes further fragmentation of the wire. The size and orientation distribution of the pre-existing microcracks at the moment of the primary fracture, and the unloading stress waves determine the secondary fracturing behaviour. A model has been developed to predict the distribution of the position of the first secondary fracture. A very good agreement is obtained between measured and calculated results. Moreover, as a by-product of the calculation, the delamination toughness of the drawn wires has been estimated to have a value between 6.8 and 16.4 MPa root m, which, on the scarce evidence available for this important material parameter, seems very plausible. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：255 / 272

页数：18