Dynamic compressive behavior of an ultralightweight magnesium foam
- Osaka Municipal Technical Research Inst. (Japan)
- Osaka Prefecture Univ., Sakai, Osaka (Japan)
- National industrial Research Inst. of Nagoya (Japan)
- Lawrence Livermore National Lab., CA (United States)
The dynamic response of an open-celled AZ91 magnesium foam with an ultra-low density of 0.05 g/cm{sup 3} was tested in compression at strain rates of about 1 {times} 10{sup 3} s{sup {minus}1}. It was found that the plateau stress of the magnesium foam exhibited a remarkable strain rate sensitivity, in a manner similar to that observed in the aluminum foam, ALPORAS. Also, the absorption energy for AZ91 foam at the dynamic strain rate of 1.4 {times} 10{sup 3} s{sup {minus}1} is twice higher than that obtained at the quasi-static strain rate (1 {times} 10{sup {minus}3} s{sup {minus}1}). These experimental results suggest that it is important to know the actual strain rate sensitivity for a specific application in order to select properly foam materials such as the ultra-lightweight metallic foam.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 691342
- Journal Information:
- Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 4 Vol. 41; ISSN 1359-6462; ISSN SCMAF7
- Country of Publication:
- United States
- Language:
- English
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