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

L. Tan; Y. Yang

doi:10.1016/j.matlet.2015.06.018

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

L. Tan
, Y. Yang

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

An in situ phase transformation of the Chi (χ) phase to the Laves phase was 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. This finding is helpful to understand the precipitation behavior of the intermetallic phases in the Mo-containing austenitic stainless steels.

Original language	English
Pages (from-to)	233-236
Number of pages	4
Journal	Materials Letters
Volume	158
DOIs	https://doi.org/10.1016/j.matlet.2015.06.018
State	Published - Jun 16 2015

Funding

This research was supported by the U.S. Department of Energy (DOE), Office of Nuclear Energy, Light Water Reactor (LWR) program and Nuclear Engineering Enabling Technology (NEET) Advanced Reactor Material Program Cross-Cut activity, under contract DE-AC05-00OR22725 with UT-Battelle, LLC.

Keywords

Microstructure
Mo-containing stainless steels
Phase transformation
TEM

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10.1016/j.matlet.2015.06.018

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title = "In situ phase transformation of Laves phase from Chi-phase in Mo-containing Fe-Cr-Ni alloys",

abstract = "An in situ phase transformation of the Chi (χ) phase to the Laves phase was 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. This finding is helpful to understand the precipitation behavior of the intermetallic phases in the Mo-containing austenitic stainless steels.",

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T1 - In situ phase transformation of Laves phase from Chi-phase in Mo-containing Fe-Cr-Ni alloys

AU - Tan, L.

AU - Yang, Y.

PY - 2015/6/16

Y1 - 2015/6/16

N2 - An in situ phase transformation of the Chi (χ) phase to the Laves phase was 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. This finding is helpful to understand the precipitation behavior of the intermetallic phases in the Mo-containing austenitic stainless steels.

AB - An in situ phase transformation of the Chi (χ) phase to the Laves phase was 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. This finding is helpful to understand the precipitation behavior of the intermetallic phases in the Mo-containing austenitic stainless steels.

KW - Microstructure

KW - Mo-containing stainless steels

KW - Phase transformation

KW - TEM

UR - https://www.scopus.com/pages/publications/84935833473

U2 - 10.1016/j.matlet.2015.06.018

DO - 10.1016/j.matlet.2015.06.018

M3 - Article

AN - SCOPUS:84935833473

SN - 0167-577X

VL - 158

SP - 233

EP - 236

JO - Materials Letters

JF - Materials Letters

ER -

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

Abstract

Funding

Keywords

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