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Artificial Effects on Cryogenic Fracture Toughness of the Main Structural Alloy for the Super Light Weight Tank

Published online by Cambridge University Press:  10 February 2011

P.S. Chen  and
W.P. Stanton
P.S. Chen
Affiliation:
IIT Research Institute, Metallurgy Research Facilities, Building 4628, Marshall Space Flight Center, AL 35812, poshou.chen@msfc.nasa.gov
W.P. Stanton
Affiliation:
National Aeronautics and Space Administration, Materials and Processes Laboratory, Metals Processing Branch, Marshall Space Flight Center, AL 35812, william.stanton@msfc.nasa.gov
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Abstract

At Marshall Space Flight Center (MSFC), a new aging technique has been developed that can significantly enhance the cryogenic fracture toughness (CFT) of Alloy 2195, as well as reducing the statistical spread of fracture toughness values. This technique improves cryogenic properties by promoting T1 nucleation and growth in the matrix, so that T1 nucleation and growth can be suppressed in the subgrain boundaries. It also minimizes mechanical property scatter due to unavoidable variations in thermomechanical processing parameters and alloy chemistry.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 551: Symposium JJ – Materials in Space-Science, Technology & Exploration , 1998 , 285
Copyright
Copyright © Materials Research Society 1999

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References

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