Phase transformation and liquid density redistribution during solidification of Ni-based superalloy Inconel 718

The influences of chemical segregation and phase transformation on liquid density variation during solidification of Ni-based supperalloy Inconel 718 were investigated using SEM and EDS. It was found that significant segregation in liquid prompts high Nb phase to precipitate directly from liquid, wh...

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Main Authors: Wang Ling, Gong He, Zhao Haofeng
Format: Article
Language:English
Published: Foundry Journal Agency 2012-08-01
Series:China Foundry
Subjects:
Online Access:http://www.foundryworld.com/uploadfile/2012082742867057.pdf
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author Wang Ling
Gong He
Zhao Haofeng
author_facet Wang Ling
Gong He
Zhao Haofeng
author_sort Wang Ling
collection DOAJ
description The influences of chemical segregation and phase transformation on liquid density variation during solidification of Ni-based supperalloy Inconel 718 were investigated using SEM and EDS. It was found that significant segregation in liquid prompts high Nb phase to precipitate directly from liquid, which results in the redistribution of alloy elements and liquid density in their vicinity. The term “inter-precipitate liquid density” is therefore proposed and this concept should be applied to determine the solidification behavior of superalloy Inconel 718.
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spelling doaj.art-5ed9f4c1f0094d4cb345e19a2e69d4562022-12-21T19:01:46ZengFoundry Journal AgencyChina Foundry1672-64212012-08-0193263268Phase transformation and liquid density redistribution during solidification of Ni-based superalloy Inconel 718Wang LingGong HeZhao HaofengThe influences of chemical segregation and phase transformation on liquid density variation during solidification of Ni-based supperalloy Inconel 718 were investigated using SEM and EDS. It was found that significant segregation in liquid prompts high Nb phase to precipitate directly from liquid, which results in the redistribution of alloy elements and liquid density in their vicinity. The term “inter-precipitate liquid density” is therefore proposed and this concept should be applied to determine the solidification behavior of superalloy Inconel 718.http://www.foundryworld.com/uploadfile/2012082742867057.pdfInconel 718Nb segregationphase transformationinter-precipitate density inversion
spellingShingle Wang Ling
Gong He
Zhao Haofeng
Phase transformation and liquid density redistribution during solidification of Ni-based superalloy Inconel 718
China Foundry
Inconel 718
Nb segregation
phase transformation
inter-precipitate density inversion
title Phase transformation and liquid density redistribution during solidification of Ni-based superalloy Inconel 718
title_full Phase transformation and liquid density redistribution during solidification of Ni-based superalloy Inconel 718
title_fullStr Phase transformation and liquid density redistribution during solidification of Ni-based superalloy Inconel 718
title_full_unstemmed Phase transformation and liquid density redistribution during solidification of Ni-based superalloy Inconel 718
title_short Phase transformation and liquid density redistribution during solidification of Ni-based superalloy Inconel 718
title_sort phase transformation and liquid density redistribution during solidification of ni based superalloy inconel 718
topic Inconel 718
Nb segregation
phase transformation
inter-precipitate density inversion
url http://www.foundryworld.com/uploadfile/2012082742867057.pdf
work_keys_str_mv AT wangling phasetransformationandliquiddensityredistributionduringsolidificationofnibasedsuperalloyinconel718
AT gonghe phasetransformationandliquiddensityredistributionduringsolidificationofnibasedsuperalloyinconel718
AT zhaohaofeng phasetransformationandliquiddensityredistributionduringsolidificationofnibasedsuperalloyinconel718