AAWSAP DIRD, Metallic Glasses for Aerospace Applications, December 2009
DOW-UAP-D117 · page 4 of 30
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UNCLASSIFIED//f8R 8FFI&IJA. W&& e,u.v 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//FOR OFFIOIAL 1:18! 8HLY