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/;'FOr.l 8Ffi61Al I/IS! 8PttY .d...... Cl) =g v.: u :i= ·-u,:.; 0.1 ().()I 0... ().()()[ Cf.l z:r. <Ll .- .E bf; ;:::J 0 e::::.:__, (J ~ u: 100 (a) fvktnllic glas~c:s [kndri11c z, \ _ • compositcs➔ :,.,0,1..._,_"~T;r S11tc;on r.,ut1dr- Wood Aluminum QT,tarnum )\ij\ llh,'f"" [along gra,n/ 0 Alumina 0 0 I 0.1 10 [00 Specific stiffness, £ / p (MPa m3 kg- 1 ) (b) Zr basect Dcndritic composi1Cs ~ Metallic glasses / lO / lOO Stiffness. E ( GPa) s1ee1s Niekel-baseo supera11oys 1000 Figure 9, Materials Property Charts. (a) Strength and stiffness (bath normalized to density) of metallic glasses (yellow) and dendrltic metallic glass matrix composites (red) compared with other materials. (b) Damage tolerance. On this plot, the dashed lines represent contours of equal fracture energy. In both plots, polymer composites (CFRP and GFRP) are represented by isotropic averages; continuous fiber composites can have greater strength and stiffness in a direction parallel to the fibers. 39 18 UNCLASSIFIEDh<EAA AEFICJOI 1166 CDP! Y
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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.