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Utilization and Limitations of Phase Transformations and Microstructures in Alloy Design for Strength and Toughness

  • G. Thomas
Part of the Battelle Institute Materials Science Colloquia book series (volume 31)

Abstract

The development and characterization of microstructures resulting from phase transformations in martensitic steels and spinodal systems are outlined and discussed in relation to improvements in ambient temperature strength and toughness. Spinodals and martensites can both have dislocated, fine-grained microstructures when formed under appropriate conditions. In martensitic steels, the importance of retained-austenite morphology and stability on toughness at high strengths is emphasized. A method is described for improving the strength of low-carbon steels by developing duplex fine-grained structures of ferrite and martensite. It is suggested that coarsened spinodal alloys have good work-hardening strengthening potential if the discontinuous growth problem at grain boundaries can be overcome. Some ideas for the utilization of multiple phase transformations are also presented.

Keywords

Ultimate Tensile Strength Lath Martensite Martensitic Steel Intergranular Crack Lower Bainite 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1977

Authors and Affiliations

  • G. Thomas
    • 1
  1. 1.Department of Materials Science and EngineeringUniversity of CaliforniaBerkeleyUSA

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