New observations on the formation of athermal martensite in Fe-Ni-Mo alloys

Yasar E., Gungunes H., Akturk S., Durlu T. N.

JOURNAL OF ALLOYS AND COMPOUNDS, vol.428, no.1-2, pp.125-129, 2007 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 428 Issue: 1-2
  • Publication Date: 2007
  • Doi Number: 10.1016/j.jallcom.2006.03.051
  • Journal Name: JOURNAL OF ALLOYS AND COMPOUNDS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.125-129
  • Keywords: phase transformation, TEM, athermal martensite, epsilon-martensite, screw dislocation, TRANSFORMATION, AUSTENITE, STEEL, CRYSTALLOGRAPHY, MOLYBDENUM, KINETICS
  • Ankara University Affiliated: No

Abstract

The thermally induced gamma-epsilon and gamma-alpha' martensitic transformation in Fe-30%Ni-x%Mo alloys with different Mo contents have been studied by transmission electron microscopy (TEM). Observations reveal that alpha' martensite is found in alloys containing 0.8, 1.8, and 2.6% Mo, and 8 martensite in the alloy containing 5%Mo. The first three display the Kurdjumov-Sachs (K-S) orientation relationship between gamma and alpha', while the other displays the Shoji-Nishiyama (S-N) orientation relationship between gamma and epsilon. (c) 2006 Elsevier B.V. All rights reserved.