Linking Crack Tip Morphology to Tear Toughness of Hot Rolled AA7050 Alloys Using X-Ray Computed Tomography

被引：2
|
作者：
Wu, Xiaomin [1 ]
Schlangen, Erik [2 ]
van der Zwaag, Sybrand
机构：
[1] Delft Univ Technol, Fac Aerosp Engn, Mat Innovat Inst M2i, NL-2629 HS Delft, Netherlands
[2] Delft Univ Technol, Fac Civil Engn & Geosci, NL-2628 CN Delft, Netherlands
来源：
ADVANCED ENGINEERING MATERIALS | 2012年 / 14卷 / 07期
关键词：
ALUMINUM-ALLOYS; HYDROGEN MICROPORES; BEHAVIOR; FATIGUE; FOAMS; MICROSTRUCTURE; QUANTIFICATION; DEFORMATION; GROWTH;
D O I：
10.1002/adem.201200079
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A lab scale X-ray tomography scanner is used to quantify the morphological details of crack tip regions of Kahn tear tested AA7050 aluminum samples subjected to different hot rolling conditions. The 3D crack tip images show distinctive differences in crack tip morphology (such as orientation and shape of the crack tip, bridging ligaments, crack opening distance, and plastic deformation around the crack tip) for samples with different fracture toughness. Quantification of the observations showed that the fracture toughness of AA7050 sample is directly related to the crack tip opening angle measured with computer tomography method.
引用
收藏
页码：449 / 456
页数：8
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