Cargando…
Development of a High-Efficiency Z-Form Selector for Single Crystal Blades and Corresponding Grain Selection Mechanism
Single crystal (SX) is widely used in modern turbine blades to improve the creep fracture, fatigue, oxidation, and coating properties of the turbine, so that the turbine engine has excellent performance and durability. In this paper, the single crystal super alloy MM247LC is used as the research mat...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6427589/ https://www.ncbi.nlm.nih.gov/pubmed/30866436 http://dx.doi.org/10.3390/ma12050780 |
_version_ | 1783405245324328960 |
---|---|
author | Zhu, Xintao Wang, Fu Ma, Dexin Bührig-Polaczek, Andreas |
author_facet | Zhu, Xintao Wang, Fu Ma, Dexin Bührig-Polaczek, Andreas |
author_sort | Zhu, Xintao |
collection | PubMed |
description | Single crystal (SX) is widely used in modern turbine blades to improve the creep fracture, fatigue, oxidation, and coating properties of the turbine, so that the turbine engine has excellent performance and durability. In this paper, the single crystal super alloy MM247LC is used as the research material. The evolution of grain structure in a two-dimensional grain selector was studied by directional experiments, and the mechanism of grain selection in the two-dimensional channel during directional solidification was clarified. In order to optimize the production process of single crystal turbine blades, the effects of the geometrical structure of a Z-type separator (i.e., wire diameter and take-off angle) on the crystal orientation, microstructure, and grain efficiency of blades were discussed. |
format | Online Article Text |
id | pubmed-6427589 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-64275892019-04-15 Development of a High-Efficiency Z-Form Selector for Single Crystal Blades and Corresponding Grain Selection Mechanism Zhu, Xintao Wang, Fu Ma, Dexin Bührig-Polaczek, Andreas Materials (Basel) Article Single crystal (SX) is widely used in modern turbine blades to improve the creep fracture, fatigue, oxidation, and coating properties of the turbine, so that the turbine engine has excellent performance and durability. In this paper, the single crystal super alloy MM247LC is used as the research material. The evolution of grain structure in a two-dimensional grain selector was studied by directional experiments, and the mechanism of grain selection in the two-dimensional channel during directional solidification was clarified. In order to optimize the production process of single crystal turbine blades, the effects of the geometrical structure of a Z-type separator (i.e., wire diameter and take-off angle) on the crystal orientation, microstructure, and grain efficiency of blades were discussed. MDPI 2019-03-07 /pmc/articles/PMC6427589/ /pubmed/30866436 http://dx.doi.org/10.3390/ma12050780 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 Zhu, Xintao Wang, Fu Ma, Dexin Bührig-Polaczek, Andreas Development of a High-Efficiency Z-Form Selector for Single Crystal Blades and Corresponding Grain Selection Mechanism |
title | Development of a High-Efficiency Z-Form Selector for Single Crystal Blades and Corresponding Grain Selection Mechanism |
title_full | Development of a High-Efficiency Z-Form Selector for Single Crystal Blades and Corresponding Grain Selection Mechanism |
title_fullStr | Development of a High-Efficiency Z-Form Selector for Single Crystal Blades and Corresponding Grain Selection Mechanism |
title_full_unstemmed | Development of a High-Efficiency Z-Form Selector for Single Crystal Blades and Corresponding Grain Selection Mechanism |
title_short | Development of a High-Efficiency Z-Form Selector for Single Crystal Blades and Corresponding Grain Selection Mechanism |
title_sort | development of a high-efficiency z-form selector for single crystal blades and corresponding grain selection mechanism |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6427589/ https://www.ncbi.nlm.nih.gov/pubmed/30866436 http://dx.doi.org/10.3390/ma12050780 |
work_keys_str_mv | AT zhuxintao developmentofahighefficiencyzformselectorforsinglecrystalbladesandcorrespondinggrainselectionmechanism AT wangfu developmentofahighefficiencyzformselectorforsinglecrystalbladesandcorrespondinggrainselectionmechanism AT madexin developmentofahighefficiencyzformselectorforsinglecrystalbladesandcorrespondinggrainselectionmechanism AT buhrigpolaczekandreas developmentofahighefficiencyzformselectorforsinglecrystalbladesandcorrespondinggrainselectionmechanism |