Microstructure Evolution and Mechanical Properties of PM-Ti43Al9V0.3Y Alloy

A novel strategy of microstructure design is introduced to improve the mechanical properties of TiAl alloys, fabricated by powder metallurgy. The gas atomization powder and as-HIPed (Hot isostatic pressing) TiAl are investigated by scanning electron microscopy, energy dispersive spectrometry, transm...

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Detalles Bibliográficos
Autores principales: Zhang, Dongdong, Liu, Na, Chen, Yuyong, Zhang, Guoqing, Tian, Jing, Kong, Fantao, Xiao, Shulong, Sun, Jianfei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6982323/
https://www.ncbi.nlm.nih.gov/pubmed/31906581
http://dx.doi.org/10.3390/ma13010198
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author Zhang, Dongdong
Liu, Na
Chen, Yuyong
Zhang, Guoqing
Tian, Jing
Kong, Fantao
Xiao, Shulong
Sun, Jianfei
author_facet Zhang, Dongdong
Liu, Na
Chen, Yuyong
Zhang, Guoqing
Tian, Jing
Kong, Fantao
Xiao, Shulong
Sun, Jianfei
author_sort Zhang, Dongdong
collection PubMed
description A novel strategy of microstructure design is introduced to improve the mechanical properties of TiAl alloys, fabricated by powder metallurgy. The gas atomization powder and as-HIPed (Hot isostatic pressing) TiAl are investigated by scanning electron microscopy, energy dispersive spectrometry, transmission electron microscopy, and electron backscattered diffraction. The dispersed submicron precipitate in the microstructure is determined to be Y(2)O(3). A microstructure with uniform fine grain is obtained. The room temperature strength and strain reach 793 MPa and 1.5%, respectively. The strength and strain at 700 °C are still as high as 664 MPa and 9.2%, respectively. The fine grain and precipitate lead to a high room-temperature plasticity.
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spelling pubmed-69823232020-02-07 Microstructure Evolution and Mechanical Properties of PM-Ti43Al9V0.3Y Alloy Zhang, Dongdong Liu, Na Chen, Yuyong Zhang, Guoqing Tian, Jing Kong, Fantao Xiao, Shulong Sun, Jianfei Materials (Basel) Article A novel strategy of microstructure design is introduced to improve the mechanical properties of TiAl alloys, fabricated by powder metallurgy. The gas atomization powder and as-HIPed (Hot isostatic pressing) TiAl are investigated by scanning electron microscopy, energy dispersive spectrometry, transmission electron microscopy, and electron backscattered diffraction. The dispersed submicron precipitate in the microstructure is determined to be Y(2)O(3). A microstructure with uniform fine grain is obtained. The room temperature strength and strain reach 793 MPa and 1.5%, respectively. The strength and strain at 700 °C are still as high as 664 MPa and 9.2%, respectively. The fine grain and precipitate lead to a high room-temperature plasticity. MDPI 2020-01-02 /pmc/articles/PMC6982323/ /pubmed/31906581 http://dx.doi.org/10.3390/ma13010198 Text en © 2020 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
Zhang, Dongdong
Liu, Na
Chen, Yuyong
Zhang, Guoqing
Tian, Jing
Kong, Fantao
Xiao, Shulong
Sun, Jianfei
Microstructure Evolution and Mechanical Properties of PM-Ti43Al9V0.3Y Alloy
title Microstructure Evolution and Mechanical Properties of PM-Ti43Al9V0.3Y Alloy
title_full Microstructure Evolution and Mechanical Properties of PM-Ti43Al9V0.3Y Alloy
title_fullStr Microstructure Evolution and Mechanical Properties of PM-Ti43Al9V0.3Y Alloy
title_full_unstemmed Microstructure Evolution and Mechanical Properties of PM-Ti43Al9V0.3Y Alloy
title_short Microstructure Evolution and Mechanical Properties of PM-Ti43Al9V0.3Y Alloy
title_sort microstructure evolution and mechanical properties of pm-ti43al9v0.3y alloy
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6982323/
https://www.ncbi.nlm.nih.gov/pubmed/31906581
http://dx.doi.org/10.3390/ma13010198
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