In this paper, the X-ray tomography is used to observe the evolution of pore morphology during the compression of aluminum foam. The pore morphological tomography images for every cross-section were obtained, and the evolution regularity was analyzed in different compression stages. The results of the research work show that the pore morphology evolution is closely related with the cell wall structure. There are non-uniform pore structure and cell wall defects generated in the preparation process of aluminum foams. Foam Al-Si alloy presents brittle fracture in the process of compression as for the reason of brittleness in its base metal. This crack first appears in the area of the cell wall with defects. As the pressure increases, the crack continues to expand and deepen with fractures appearing in some cell walls, and eventually forming a fracture zone; finally, the entire sample is compacted and crushed. Foam magnesium alloy presents good ductility in the process of compression. Bending deformation of the cell wall occurs, and expands to the central area until the entire sample is compacted.
Weitere Kapitel dieses Buchs durch Wischen aufrufen
Bitte loggen Sie sich ein, um Zugang zu diesem Inhalt zu erhalten
Sie möchten Zugang zu diesem Inhalt erhalten? Dann informieren Sie sich jetzt über unsere Produkte:
- Analysis of the Evolution and Deformation of Pore Morphology During Compression
- Springer International Publishing
in-adhesives, MKVS, Nordson/© Nordson, ViscoTec/© ViscoTec, Hellmich GmbH/© Hellmich GmbH