Bainite in the light of rapid continuous cooling information

Journal Article · Sat Jun 01 04:00:00 EDT 1996 · Metallurgical Transactions, A

DOI:https://doi.org/10.1007/BF02649810· OSTI ID:264071

Borgenstam, A; Hillert, M ^[1]

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1. Royal Inst. of Technology, Stockholm (Sweden). Dept. of Materials Science and Engineering

Rapid continuous cooling of pure iron can produce three different transformations yielding acicular structures: Widmanstaetten {alpha}, lath martensite, and lenticular martensite. The information on their extensions into binary systems with carbon nickel, and chromium has been reviewed, and admittedly rough methods have been used for estimating growth rates in order to examine the role of diffusion. The effect of alloying elements on their plateau temperatures and growth rates indicates that Widmanstaetten {alpha} in Fe-C alloys grows under conditions close to local equilibrium for carbon, and it is suggested that the same should hold for edgewise growth of bainite. In Fe-Ni alloys, there are indications that Widmanstaetten {alpha} grows under a considerable solute drag, an effect which may also occur for bainite. In Fe-Cr alloys, the solute drag effect seems to be weaker but may increase with the carbon content.

• Sponsoring Organization: USDOE
• OSTI ID: 264071
• Report Number(s): CONF-941016--
• Journal Information: Metallurgical Transactions, A, Journal Name: Metallurgical Transactions, A Journal Issue: 6 Vol. 27; ISSN 0360-2133; ISSN MTTABN
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BINARY ALLOY SYSTEMS
CARBON ADDITIONS
CHROMIUM ALLOYS
DIFFUSION
EUTECTOIDS
IRON ALLOYS
MARTENSITE
NICKEL ALLOYS
PHASE TRANSFORMATIONS
TEMPERATURE DEPENDENCE
WIDMANSTAETTEN STRUCTURE