Observation of void nucleation, growth and coalescence in a model metal matrix composite using X-ray tomography

• Published in: Materials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 488; no. 1; pp. 435 - 445
• Main Authors: Weck, A., Wilkinson, D.S., Maire, E.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.08.2008; Elsevier
• Subjects: Applied sciences; Brown and Embury model; Ductile fracture; Elasticity. Plasticity; Engineering Sciences; Exact sciences and technology; Fractures; Materials; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology; Metals. Metallurgy; Radiography; Void coalescence; X-ray tomography; Brown and Embury model; Radiography; X-ray tomography; Ductile fracture; Void coalescence; High strain; Notched test piece; Metal matrix composite; Slip line; Core shell structure; Transition element compounds; Necking; Aluminium; Cavitation; X ray diffraction; Triaxial stress; Tension test; Inorganic compound; Finite element method; Zirconium oxide; Silicon oxides; Plasticity; Tomography

A model material with a core/shell design has been fabricated. The core consists of 50 μ m diameter ZrO 2/SiO 2particles in a pure aluminum matrix (99.9%) while the shell consists of particle-free aluminum. Such a design allows the sample to deform in a controlled manner. Void nucleation, growth and...