Effects of heat treatment condition on the microstructure evolution of Inconel 690

Jung A. Lee; Joon Hyung Lee; Jeong Joo Kim; Young Suk Chai

doi:10.4028/0-87849-978-4.458

Effects of heat treatment condition on the microstructure evolution of Inconel 690

Jung A. Lee, Joon Hyung Lee, Jeong Joo Kim, Young Suk Chai

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

3 Scopus citations

Abstract

The effect of heat treatment on the morphologies of precipitates and grain boundaries of Inconel 690 alloy was studied. When the specimens were slowly cooled from the solutionizing temperature, typical discontinuous coarsening of Cr-rich carbides in grain boundaries was observed. As the cooling rate decreased, Cr-rich carbides grew and wider Cr depletion zone was created between the carbide precipitates, which resulted in wavy grain boundaries. The driving force of the wavy grain boundary was explained by the coherent strain energy.

Original language	English
Pages (from-to)	458-462
Number of pages	5
Journal	Key Engineering Materials
Volume	297-300 I
DOIs	https://doi.org/10.4028/0-87849-978-4.458
State	Published - 2005

Keywords

Cr-depletion zone
Cr-rich carbide
Discontinuous coarsening
Inconel 690
Wavy grain boundary

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10.4028/0-87849-978-4.458

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title = "Effects of heat treatment condition on the microstructure evolution of Inconel 690",

abstract = "The effect of heat treatment on the morphologies of precipitates and grain boundaries of Inconel 690 alloy was studied. When the specimens were slowly cooled from the solutionizing temperature, typical discontinuous coarsening of Cr-rich carbides in grain boundaries was observed. As the cooling rate decreased, Cr-rich carbides grew and wider Cr depletion zone was created between the carbide precipitates, which resulted in wavy grain boundaries. The driving force of the wavy grain boundary was explained by the coherent strain energy.",

keywords = "Cr-depletion zone, Cr-rich carbide, Discontinuous coarsening, Inconel 690, Wavy grain boundary",

author = "Lee, \{Jung A.\} and Lee, \{Joon Hyung\} and Kim, \{Jeong Joo\} and Chai, \{Young Suk\}",

year = "2005",

doi = "10.4028/0-87849-978-4.458",

language = "English",

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pages = "458--462",

journal = "Key Engineering Materials",

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T1 - Effects of heat treatment condition on the microstructure evolution of Inconel 690

AU - Lee, Jung A.

AU - Lee, Joon Hyung

AU - Kim, Jeong Joo

AU - Chai, Young Suk

PY - 2005

Y1 - 2005

N2 - The effect of heat treatment on the morphologies of precipitates and grain boundaries of Inconel 690 alloy was studied. When the specimens were slowly cooled from the solutionizing temperature, typical discontinuous coarsening of Cr-rich carbides in grain boundaries was observed. As the cooling rate decreased, Cr-rich carbides grew and wider Cr depletion zone was created between the carbide precipitates, which resulted in wavy grain boundaries. The driving force of the wavy grain boundary was explained by the coherent strain energy.

AB - The effect of heat treatment on the morphologies of precipitates and grain boundaries of Inconel 690 alloy was studied. When the specimens were slowly cooled from the solutionizing temperature, typical discontinuous coarsening of Cr-rich carbides in grain boundaries was observed. As the cooling rate decreased, Cr-rich carbides grew and wider Cr depletion zone was created between the carbide precipitates, which resulted in wavy grain boundaries. The driving force of the wavy grain boundary was explained by the coherent strain energy.

KW - Cr-depletion zone

KW - Cr-rich carbide

KW - Discontinuous coarsening

KW - Inconel 690

KW - Wavy grain boundary

UR - https://www.scopus.com/pages/publications/34249743595

U2 - 10.4028/0-87849-978-4.458

DO - 10.4028/0-87849-978-4.458

M3 - Article

AN - SCOPUS:34249743595

SN - 1013-9826

VL - 297-300 I

SP - 458

EP - 462

JO - Key Engineering Materials

JF - Key Engineering Materials

ER -

Effects of heat treatment condition on the microstructure evolution of Inconel 690

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Keywords

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