Ductile-brittle-ductile transition and grain boundary segregation of Mn and Ni in an Fe-6Mn-12Ni alloy

Journal Article · Wed May 15 04:00:00 EDT 1996 · Scripta Materialia

DOI:https://doi.org/10.1016/1359-6462(96)00032-2· OSTI ID:247969

Heo, N H ^[1]

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1. Massachusetts Inst. of Tech., Cambridge, MA (United States). Dept. of Materials Science and Engineering

Recently, Heo and Lee reported a ductile-brittle-ductile (DBD) transition in an Fe-8Mn-7Ni ternary alloy, which was caused by manganese segregation to the grain boundaries and its desegregation into the matrix. More recently Heo theoretically analyzed the nonequilibrium segregation behaviors of the elements in the Fe-8Mn-7Ni alloy. The aim of the present study is to investigate whether other Fe-6Mn-12Ni ternary alloy also shows the ductile-brittle-ductile transition, and is additionally to ascertain whether calculated results are consistent with experimental data. The study encompasses experimental procedures and a modeling based on the previous research. A general discussion will show that such an approach allows a comprehensive understanding of the ductile-brittle-ductile transition in the Fe-Mn-Ni ternary alloys.

• OSTI ID: 247969
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 10 Vol. 34; ISSN 1359-6462; ISSN XZ503X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AUGER ELECTRON SPECTROSCOPY
AUSTENITE
CHEMICAL COMPOSITION
FRACTOGRAPHY
GRAIN BOUNDARIES
HARDNESS
IRON ALLOYS
MANGANESE ALLOYS
NICKEL ALLOYS
PRECIPITATION
SAMPLE PREPARATION
SCANNING ELECTRON MICROSCOPY
STRAIN RATE
TENSILE PROPERTIES
X-RAY DIFFRACTION