Grain boundary segregation of boron in INCONEL 718

Greg Mcmahon; W Chen; M C Chaturvedi; N L Richards; G McMahon

doi:10.1007/s11661-998-0020-6

Grain boundary segregation of boron in INCONEL 718

Greg Mcmahon, W Chen, M C Chaturvedi, N L Richards, G McMahon

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

Abstract

The segregation behavior of boron at grain boundaries in two INCONEL 718(+) based alloys with different B concentrations was studied. The alloys, one containing 11 ppm of B and the other 43 ppm, were homogenized at 1200 degrees C for 2 hours followed by water quenching and air cooling. A strong segregation of boron at grain boundaries was observed using secondary ion mass spectrometry after the heat treatment in both the alloys. The segregation was found mainly to be of nonequilibrium type. The homogenized samples were also annealed at 1050 degrees C for various lengths of time. During annealing, boride particles were observed to first form at grain boundaries and then to dissolve on continued annealing at 1050 degrees C, The mechanisms of segregation and desegregation of B are discussed.

Original language	English
Pages (from-to)	1947-1954
Number of pages	8
Journal	Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
Volume	29
Issue number	7
DOIs	https://doi.org/10.1007/s11661-998-0020-6
Publication status	Published - 1998

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title = "Grain boundary segregation of boron in INCONEL 718",

abstract = "The segregation behavior of boron at grain boundaries in two INCONEL 718(+) based alloys with different B concentrations was studied. The alloys, one containing 11 ppm of B and the other 43 ppm, were homogenized at 1200 degrees C for 2 hours followed by water quenching and air cooling. A strong segregation of boron at grain boundaries was observed using secondary ion mass spectrometry after the heat treatment in both the alloys. The segregation was found mainly to be of nonequilibrium type. The homogenized samples were also annealed at 1050 degrees C for various lengths of time. During annealing, boride particles were observed to first form at grain boundaries and then to dissolve on continued annealing at 1050 degrees C, The mechanisms of segregation and desegregation of B are discussed.",

author = "Greg Mcmahon and W Chen and Chaturvedi, {M C} and Richards, {N L} and G McMahon",

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T1 - Grain boundary segregation of boron in INCONEL 718

AU - Mcmahon, Greg

AU - Chen, W

AU - Chaturvedi, M C

AU - Richards, N L

AU - McMahon, G

N1 - Times Cited: 34

PY - 1998

Y1 - 1998

N2 - The segregation behavior of boron at grain boundaries in two INCONEL 718(+) based alloys with different B concentrations was studied. The alloys, one containing 11 ppm of B and the other 43 ppm, were homogenized at 1200 degrees C for 2 hours followed by water quenching and air cooling. A strong segregation of boron at grain boundaries was observed using secondary ion mass spectrometry after the heat treatment in both the alloys. The segregation was found mainly to be of nonequilibrium type. The homogenized samples were also annealed at 1050 degrees C for various lengths of time. During annealing, boride particles were observed to first form at grain boundaries and then to dissolve on continued annealing at 1050 degrees C, The mechanisms of segregation and desegregation of B are discussed.

AB - The segregation behavior of boron at grain boundaries in two INCONEL 718(+) based alloys with different B concentrations was studied. The alloys, one containing 11 ppm of B and the other 43 ppm, were homogenized at 1200 degrees C for 2 hours followed by water quenching and air cooling. A strong segregation of boron at grain boundaries was observed using secondary ion mass spectrometry after the heat treatment in both the alloys. The segregation was found mainly to be of nonequilibrium type. The homogenized samples were also annealed at 1050 degrees C for various lengths of time. During annealing, boride particles were observed to first form at grain boundaries and then to dissolve on continued annealing at 1050 degrees C, The mechanisms of segregation and desegregation of B are discussed.

U2 - 10.1007/s11661-998-0020-6

DO - 10.1007/s11661-998-0020-6

M3 - Article

SN - 1073-5623

VL - 29

SP - 1947

EP - 1954

JO - Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science

JF - Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science

IS - 7

ER -

Grain boundary segregation of boron in INCONEL 718

Abstract

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