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Title: In situ phase transformation of Laves phase from Chi-phase in Mo-containing Fe–Cr–Ni alloys

Journal Article · · Materials Letters
 [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
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For an in situ phase transformation of the Chi (χ) phase to the Laves phase we observed in a Fe–Cr–Ni–Mo model alloy. The morphology, composition, and crystal structure of the χ and Laves phases, and their orientation relationship with the matrix austenite phase were investigated. The resulted Laves phase has larger lattice mismatch with the matrix phase than the χ phase, leading to the increase of local strain fields and the formation of dislocations. Moreover, this finding is helpful to understand the precipitation behavior of the intermetallic phases in the Mo-containing austenitic stainless steels.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1185867
Alternate ID(s):
OSTI ID: 1358629
Journal Information:
Materials Letters, Vol. 158, Issue C; ISSN 0167-577X
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

References (9)

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Understanding sigma-phase precipitation in a stabilized austenitic stainless steel (316Nb) through complementary CALPHAD-based and experimental investigations journal October 2014
The ordering of atoms in the chi-phase of the iron-chromium-molybdenum system journal May 1954
Phase identification in an isothermally aged austenitic 22Cr-21Ni-6Mo-N stainless steel journal September 1998
Thermal Stability of Intermetallic Phases in Fe-rich Fe-Cr-Ni-Mo Alloys journal June 2015

Cited By (2)

Development of Intergranular Residual Stress and Its Implication to Mechanical Behaviors at Elevated Temperatures in AL6XN Austenitic Stainless Steel journal May 2018
Effect of high anodic polarization on the passive layer properties of superduplex stainless steel friction stir welds at different chloride electrolyte pH values and temperatures journal June 2019

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Related Subjects

36 MATERIALS SCIENCE