Documents / Report
The Defense Intelligence Agency issued this Defense Intelligence Reference Document (DIA-08-0911-012), dated 14 December 2009, as one of its FY 2009 advanced technology reports under the Advanced Aerospace Weapon System Applications (AAWSA) Program. It reviews how metallic glasses are structured and processed, their mechanical properties, and metallic glass matrix composites. It concludes that dendritic composites could replace high-strength steels in some aerospace parts. It adds that wide aerospace use depends critically on developing new lightweight glass-forming alloys.
UNCLASSIFIED//P811 8PPllltl1ls W&li &Pll!Y Current Challenges and Prospects for the Future ................................................. 20 Alloy Design ...................................................................................................... 20 Thermophysical Properties and Thermoplastic Processing ............................... 20 Composites and the Quest for Ductility ............................................................ 21 Summary and Recommendations ......................................................................... 22 Figures 1. Amorphous Versus Crystalline Structure ............................................................ 1 2. Critical Cooling Rate ........................................................................................... 2 3. Examples of Processing of Metallic Glasses ........................................................ 4 4. Shear Bands ....................................................................................................... 8 5. Fatigue Limit of Metallic-Glass-Matrix Composites ........................................... 10 6. Deformation Map for a Metallic Glasses ............................................................ 11 7. Cast Metallic Glass Wedge ................................................................................ 13 8. Microstructure of In Situ Metallic Glass Matrix Composite ................................ 15 9. Materials Property Charts ................................................................................. 18 Tables 1. Selected Bulk Glass-Forming Alloys .................................................................... 3 2. Comparison of Strengths of Amorphous and Crystalline Aluminum Alloys ......... 7 iv UNCLASSIFIED,C/liOlil OFFl611k WGEi 0,11&¥
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Report, from the dia collection. The PDF is mirrored here; the original link is above. 30 pages are in the text index: search them above, or from the library's search.