Study of the Evolution of the Plastic Zone and Residual Stress in a Notched T-6061 Aluminum Sample

Using experimental measurements and numerical computations, this paper focuses on studying the evolution of the plastic zone and how the residual stresses change in a notched T-6061 aluminum sample. Before the crack initiation, digital image measurements were taken to visualize the evolution of the...

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Bibliographic Details
Published in:Materials 2022-02, Vol.15 (4), p.1546
Main Authors: Palacios-Pineda, Luis Manuel, Hernandez-Reséndiz, José Emiliano, Martínez-Romero, Oscar, Hernandez Donado, Roque J, Tenorio-Quevedo, Jesús, Jiménez-Cedeño, Isaac H, López-Vega, Cecilio, Olvera-Trejo, Daniel, Elías-Zúñiga, Alex
Format: Article
Language:English
Subjects:
Aluminum
Aluminum alloys
Camcorders
Crack initiation
Crack propagation
Deformation
Digital imaging
Evolution
Geometry
Measurement techniques
Optical microscopy
Plastic zones
Residual stress
Simulation
Stress measurement
Tension tests
X-rays
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Summary:Using experimental measurements and numerical computations, this paper focuses on studying the evolution of the plastic zone and how the residual stresses change in a notched T-6061 aluminum sample. Before the crack initiation, digital image measurements were taken to visualize the evolution of the plastic zone. After the sample was fractured, the material microstructure and the residual stresses around the cracked zone were characterized through optical microscopy and X-ray diffractometry. This article describes in detail how the plastic zone evolved around the notch before the crack initiation and shows the close agreement between experimental and numerical data during the load increment. The surface residual stress values around the tip of the notched sample were also measured and computed to give a better understanding of the affected region during the fracture process.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma15041546