Carbides Evolution in a Ni-16Mo-7Cr Base Superalloy during Long-Term Thermal Exposure

The effect of long-term thermal exposure on the carbide evolution in a Ni-16Mo-7Cr base superalloy was investigated. The results show that M(12)C carbides are mainly precipitated on the grain boundaries during thermal exposure, and the primary massive M(6)C carbides can be completely transformed to...

Descripción completa

Detalles Bibliográficos
Autores principales: Han, Fenfen, Jiang, Li, Ye, Xiangxi, Lu, Yanling, Li, Zhijun, Zhou, Xingtai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Letter
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5459024/
https://www.ncbi.nlm.nih.gov/pubmed/28772881
http://dx.doi.org/10.3390/ma10050521
_version_ 1783241883622834176
author Han, Fenfen
Jiang, Li
Ye, Xiangxi
Lu, Yanling
Li, Zhijun
Zhou, Xingtai
author_facet Han, Fenfen
Jiang, Li
Ye, Xiangxi
Lu, Yanling
Li, Zhijun
Zhou, Xingtai
author_sort Han, Fenfen
collection PubMed
description The effect of long-term thermal exposure on the carbide evolution in a Ni-16Mo-7Cr base superalloy was investigated. The results show that M(12)C carbides are mainly precipitated on the grain boundaries during thermal exposure, and the primary massive M(6)C carbides can be completely transformed to M(12)C carbides in situ at temperatures above 750 °C for long-term thermal exposure. The transformation from M(6)C carbides to M(12)C carbides is attributed to the release of C atoms from M(6)C, which results in the morphology changes of massive carbides, and stabilization of the sizes of M(12)C carbides precipitated on the grain boundaries.
format Online
Article
Text
id pubmed-5459024
institution National Center for Biotechnology Information
language English
publishDate 2017
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-54590242017-07-28 Carbides Evolution in a Ni-16Mo-7Cr Base Superalloy during Long-Term Thermal Exposure Han, Fenfen Jiang, Li Ye, Xiangxi Lu, Yanling Li, Zhijun Zhou, Xingtai Materials (Basel) Letter The effect of long-term thermal exposure on the carbide evolution in a Ni-16Mo-7Cr base superalloy was investigated. The results show that M(12)C carbides are mainly precipitated on the grain boundaries during thermal exposure, and the primary massive M(6)C carbides can be completely transformed to M(12)C carbides in situ at temperatures above 750 °C for long-term thermal exposure. The transformation from M(6)C carbides to M(12)C carbides is attributed to the release of C atoms from M(6)C, which results in the morphology changes of massive carbides, and stabilization of the sizes of M(12)C carbides precipitated on the grain boundaries. MDPI 2017-05-12 /pmc/articles/PMC5459024/ /pubmed/28772881 http://dx.doi.org/10.3390/ma10050521 Text en © 2017 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 Letter
Han, Fenfen
Jiang, Li
Ye, Xiangxi
Lu, Yanling
Li, Zhijun
Zhou, Xingtai
Carbides Evolution in a Ni-16Mo-7Cr Base Superalloy during Long-Term Thermal Exposure
title Carbides Evolution in a Ni-16Mo-7Cr Base Superalloy during Long-Term Thermal Exposure
title_full Carbides Evolution in a Ni-16Mo-7Cr Base Superalloy during Long-Term Thermal Exposure
title_fullStr Carbides Evolution in a Ni-16Mo-7Cr Base Superalloy during Long-Term Thermal Exposure
title_full_unstemmed Carbides Evolution in a Ni-16Mo-7Cr Base Superalloy during Long-Term Thermal Exposure
title_short Carbides Evolution in a Ni-16Mo-7Cr Base Superalloy during Long-Term Thermal Exposure
title_sort carbides evolution in a ni-16mo-7cr base superalloy during long-term thermal exposure
topic Letter
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5459024/
https://www.ncbi.nlm.nih.gov/pubmed/28772881
http://dx.doi.org/10.3390/ma10050521
work_keys_str_mv AT hanfenfen carbidesevolutioninani16mo7crbasesuperalloyduringlongtermthermalexposure
AT jiangli carbidesevolutioninani16mo7crbasesuperalloyduringlongtermthermalexposure
AT yexiangxi carbidesevolutioninani16mo7crbasesuperalloyduringlongtermthermalexposure
AT luyanling carbidesevolutioninani16mo7crbasesuperalloyduringlongtermthermalexposure
AT lizhijun carbidesevolutioninani16mo7crbasesuperalloyduringlongtermthermalexposure
AT zhouxingtai carbidesevolutioninani16mo7crbasesuperalloyduringlongtermthermalexposure

Ejemplares similares