Ductile crack initiation and propagation assessed via in situ synchrotron radiation-computed laminography

被引：44

作者：

Morgeneyer, T. F. ^{[1
]}

Helfen, L. ^{[2
,4
]}

Sinclair, I. ^{[3
]}

Proudhon, H. ^{[1
]}

Xu, F. ^{[2
]}

Baumbach, T. ^{[2
]}

机构：

[1] Mines ParisTech, Ctr Mat, CNRS, UMR 7633, F-91003 Evry, France

[2] KIT, ANKA Inst Synchrotron Radiat, D-76131 Karlsruhe, Germany

[3] Univ Southampton, Sch Engn Sci, Mat Res Grp, Southampton SO17 1BJ, Hants, England

[4] European Synchrotron Radiat Facil, F-38043 Grenoble, France

来源：

SCRIPTA MATERIALIA | 2011年 / 65卷 / 11期

基金：

英国工程与自然科学研究理事会;

关键词：

In situ laminography; Synchrotron radiation; Aluminium; Ductile fracture; Void growth; ALLOY SHEET; TOMOGRAPHY; OBJECTS;

D O I：

10.1016/j.scriptamat.2011.09.005

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Ductile crack initiation and propagation within a naturally aged aluminium alloy sheet has been observed in situ via synchrotron radiation-computed laminography, a technique specifically adapted to three-dimensional imaging of thin objects that are laterally extended. Voids and intermetallic particles, and their subsequent evolution during ductile crack extension at different associated levels of stress triaxiality, were clearly observed within fracture coupons of a reasonable engineering length-scale, overcoming the conventional sample size limitation of computed tomography at high resolutions. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1010 / 1013

页数：4

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