کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1645350 | 1517287 | 2013 | 4 صفحه PDF | دانلود رایگان |
• Nanocrystalline grain sizes in electrodeposited Ni fit a log-normal distribution.
• X-ray microtomography reveals the 3D deformation and failure of hollow spheres.
• Multiple buckling and interfacial contacts of sphere walls are dominant mechanisms.
• Microstructure of wall is linked to predict macroscopic response of hollow spheres.
Nanocrystalline grain sizes in the walls of electrodeposited nickel thin-walled hollow spheres were quantified in FIB-TEM and found to fit a log-normal distribution. Based on the microstructure and nanoindentation properties, reliable material data were determined and related to predict bulk compressive behaviour of the spheres through a finite element model. X-ray microtomography of specimens under compression validates the model, and reveals the 3D deformation/failure mechanisms that dominate macroscopic response of the sphere: multiple buckling and contacts in wall materials.
Journal: Materials Letters - Volume 100, 1 June 2013, Pages 233–236