Effects of Cooling Rate on the Solidification and Microstructure of Nickel-Based Superalloy GTD222

In this work, the microstructure and solidification behavior of nickel-based superalloy GTD222 at different cooling rates are studied. The solidification of the superalloy GTD222 proceeds as follows: L → L + γ, L → L + γ + MC, L → L + (γ/γ′)-Eutectic and L → η phase. Due to alloying element redistri...

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Autores principales: Gao, Bo, Sui, Yanfei, Wang, Hongwei, Zou, Chunming, Wei, Zunjie, Wang, Rui, Sun, Yanle
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6631751/
https://www.ncbi.nlm.nih.gov/pubmed/31197116
http://dx.doi.org/10.3390/ma12121920
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author Gao, Bo
Sui, Yanfei
Wang, Hongwei
Zou, Chunming
Wei, Zunjie
Wang, Rui
Sun, Yanle
author_facet Gao, Bo
Sui, Yanfei
Wang, Hongwei
Zou, Chunming
Wei, Zunjie
Wang, Rui
Sun, Yanle
author_sort Gao, Bo
collection PubMed
description In this work, the microstructure and solidification behavior of nickel-based superalloy GTD222 at different cooling rates are studied. The solidification of the superalloy GTD222 proceeds as follows: L → L + γ, L → L + γ + MC, L → L + (γ/γ′)-Eutectic and L → η phase. Due to alloying element redistribution, the temperature of the solidus GTD222 superalloy, 1310 °C, is slightly lower than the temperature of the liquidus, which is 1360 °C. It was found that the dendrite arm spacing of the alloy decreased with the increase of the cooling rate from 200 μm at 2.5 K/min to 100 μm at 20 K/min.
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spelling pubmed-66317512019-08-19 Effects of Cooling Rate on the Solidification and Microstructure of Nickel-Based Superalloy GTD222 Gao, Bo Sui, Yanfei Wang, Hongwei Zou, Chunming Wei, Zunjie Wang, Rui Sun, Yanle Materials (Basel) Article In this work, the microstructure and solidification behavior of nickel-based superalloy GTD222 at different cooling rates are studied. The solidification of the superalloy GTD222 proceeds as follows: L → L + γ, L → L + γ + MC, L → L + (γ/γ′)-Eutectic and L → η phase. Due to alloying element redistribution, the temperature of the solidus GTD222 superalloy, 1310 °C, is slightly lower than the temperature of the liquidus, which is 1360 °C. It was found that the dendrite arm spacing of the alloy decreased with the increase of the cooling rate from 200 μm at 2.5 K/min to 100 μm at 20 K/min. MDPI 2019-06-14 /pmc/articles/PMC6631751/ /pubmed/31197116 http://dx.doi.org/10.3390/ma12121920 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Gao, Bo
Sui, Yanfei
Wang, Hongwei
Zou, Chunming
Wei, Zunjie
Wang, Rui
Sun, Yanle
Effects of Cooling Rate on the Solidification and Microstructure of Nickel-Based Superalloy GTD222
title Effects of Cooling Rate on the Solidification and Microstructure of Nickel-Based Superalloy GTD222
title_full Effects of Cooling Rate on the Solidification and Microstructure of Nickel-Based Superalloy GTD222
title_fullStr Effects of Cooling Rate on the Solidification and Microstructure of Nickel-Based Superalloy GTD222
title_full_unstemmed Effects of Cooling Rate on the Solidification and Microstructure of Nickel-Based Superalloy GTD222
title_short Effects of Cooling Rate on the Solidification and Microstructure of Nickel-Based Superalloy GTD222
title_sort effects of cooling rate on the solidification and microstructure of nickel-based superalloy gtd222
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6631751/
https://www.ncbi.nlm.nih.gov/pubmed/31197116
http://dx.doi.org/10.3390/ma12121920
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