Effects of thermomechanical processing on strength and toughness of iron - 12-percent-nickel - reactive metal alloys at -196C̊
Joseph R. Stephens, Walter R. Witzke, United States. National Aeronautics and Space Administration. Scientific and Technical Information Office, Lewis Research Center
National Aeronautics and Space Administration, Scientific and Technical Information Office, 1978 - Technology & Engineering - 33 pages
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25Nb alloy 25Ti alloys 5A1 alloy 5Al alloy alloys at 196 alloys with reactive aluminum plus niobium annealed at 820 annealed conditions annealing at 685 annealing temperature annealing treatments area under curve as-rolled 25 as-rolled alloy as-rolled condition austenite cold rolled combination cryogenic dimpled rupture effects of TMP equiaxed structure Fe-12Ni alloys Fe-12Ni-reactive metal alloys ferrite region fracture surfaces GPa ksi grain boundary grain structure high toughness ically interstitial iron-12 nickel iron-12 nickel-2 vanadium KIcd KjC(j fracture toughness lath width lower toughness martensitic lath structure maximum MECHANICAL Metallographic examination micrometer microstructure millimeters ness nickel steel nickel-0 omechanically processed alloy processed alloys annealed processed alloys exhibited rolled alloy rolled material rolling at 1100 rolling at 25 shown in figure similar strength slow-bend test specimen strength and high strength and toughness Subsequent annealing therm thermomechanically processed alloy thermomechanically processed Fe-12Ni-0 TMP alloy TMP technique toughness goal yield strength