Composite Metal Foam Resilient Against High Stresses and Temperatures (IMAGE)
Caption
Optical images of Steel CMF specimens subjected to compression–compression fatigue testing at various temperatures: a) and b) 23°C, (c) 400°C, and (d) 600°C. All specimens show minimal deformation with uniform axial shortening without shearing, bulging or cracking [Note A:High-Temp. grease seen at top and bottom contact faces of specimen with compression platen squeezed out during test; Note B: The color difference is due to oxide layer thickness - thin chromium oxide at 400 °C gives a golden hue, while thicker high-temperature oxides at ~600 °C produce a bluish-black color.]
Credit
Afsaneh Rabiei, NC State University
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