The improved properties and microstructure of β-solidify TiAl alloys by boron addition and multi steps forging process

A novel forging process has been designed for better mechanical properties of Ti-43Al-6Nb-1Mo-1Cr-(0,0.6)B alloys in this paper. Multi step forging process could provide much finer microstructure, higher room-temperature strength, increased high-temperature strength and elongation with these alloys....

Descripción completa

Detalles Bibliográficos
Autores principales: Xiao, Shulong, Chen, Yuyong, Li, Mingao, Xu, Lijuan, Tian, Jing, Zhang, Dongdong, Yang, Jianhui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6712004/
https://www.ncbi.nlm.nih.gov/pubmed/31455782
http://dx.doi.org/10.1038/s41598-019-47530-9
_version_ 1783446600770650112
author Xiao, Shulong
Chen, Yuyong
Li, Mingao
Xu, Lijuan
Tian, Jing
Zhang, Dongdong
Yang, Jianhui
author_facet Xiao, Shulong
Chen, Yuyong
Li, Mingao
Xu, Lijuan
Tian, Jing
Zhang, Dongdong
Yang, Jianhui
author_sort Xiao, Shulong
collection PubMed
description A novel forging process has been designed for better mechanical properties of Ti-43Al-6Nb-1Mo-1Cr-(0,0.6)B alloys in this paper. Multi step forging process could provide much finer microstructure, higher room-temperature strength, increased high-temperature strength and elongation with these alloys. The forged alloys without boron exhibit strength and elongation as 676.05 ± 11.37 MPa and 41.32 ± 1.38% at 800 °C, while the average grain size represents as 12.63 ± 3.77 μm. The forged alloys with 0.6 at.% B represent better mechanical properties than the forged alloys without boron, due to the refined microstructure with dispersive borides. Meanwhile, the detailed mechanism of increased strength and elongation caused by finer microstructure were concluded and discussed.
format Online
Article
Text
id pubmed-6712004
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher Nature Publishing Group UK
record_format MEDLINE/PubMed
spelling pubmed-67120042019-09-13 The improved properties and microstructure of β-solidify TiAl alloys by boron addition and multi steps forging process Xiao, Shulong Chen, Yuyong Li, Mingao Xu, Lijuan Tian, Jing Zhang, Dongdong Yang, Jianhui Sci Rep Article A novel forging process has been designed for better mechanical properties of Ti-43Al-6Nb-1Mo-1Cr-(0,0.6)B alloys in this paper. Multi step forging process could provide much finer microstructure, higher room-temperature strength, increased high-temperature strength and elongation with these alloys. The forged alloys without boron exhibit strength and elongation as 676.05 ± 11.37 MPa and 41.32 ± 1.38% at 800 °C, while the average grain size represents as 12.63 ± 3.77 μm. The forged alloys with 0.6 at.% B represent better mechanical properties than the forged alloys without boron, due to the refined microstructure with dispersive borides. Meanwhile, the detailed mechanism of increased strength and elongation caused by finer microstructure were concluded and discussed. Nature Publishing Group UK 2019-08-27 /pmc/articles/PMC6712004/ /pubmed/31455782 http://dx.doi.org/10.1038/s41598-019-47530-9 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Xiao, Shulong
Chen, Yuyong
Li, Mingao
Xu, Lijuan
Tian, Jing
Zhang, Dongdong
Yang, Jianhui
The improved properties and microstructure of β-solidify TiAl alloys by boron addition and multi steps forging process
title The improved properties and microstructure of β-solidify TiAl alloys by boron addition and multi steps forging process
title_full The improved properties and microstructure of β-solidify TiAl alloys by boron addition and multi steps forging process
title_fullStr The improved properties and microstructure of β-solidify TiAl alloys by boron addition and multi steps forging process
title_full_unstemmed The improved properties and microstructure of β-solidify TiAl alloys by boron addition and multi steps forging process
title_short The improved properties and microstructure of β-solidify TiAl alloys by boron addition and multi steps forging process
title_sort improved properties and microstructure of β-solidify tial alloys by boron addition and multi steps forging process
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6712004/
https://www.ncbi.nlm.nih.gov/pubmed/31455782
http://dx.doi.org/10.1038/s41598-019-47530-9
work_keys_str_mv AT xiaoshulong theimprovedpropertiesandmicrostructureofbsolidifytialalloysbyboronadditionandmultistepsforgingprocess
AT chenyuyong theimprovedpropertiesandmicrostructureofbsolidifytialalloysbyboronadditionandmultistepsforgingprocess
AT limingao theimprovedpropertiesandmicrostructureofbsolidifytialalloysbyboronadditionandmultistepsforgingprocess
AT xulijuan theimprovedpropertiesandmicrostructureofbsolidifytialalloysbyboronadditionandmultistepsforgingprocess
AT tianjing theimprovedpropertiesandmicrostructureofbsolidifytialalloysbyboronadditionandmultistepsforgingprocess
AT zhangdongdong theimprovedpropertiesandmicrostructureofbsolidifytialalloysbyboronadditionandmultistepsforgingprocess
AT yangjianhui theimprovedpropertiesandmicrostructureofbsolidifytialalloysbyboronadditionandmultistepsforgingprocess
AT xiaoshulong improvedpropertiesandmicrostructureofbsolidifytialalloysbyboronadditionandmultistepsforgingprocess
AT chenyuyong improvedpropertiesandmicrostructureofbsolidifytialalloysbyboronadditionandmultistepsforgingprocess
AT limingao improvedpropertiesandmicrostructureofbsolidifytialalloysbyboronadditionandmultistepsforgingprocess
AT xulijuan improvedpropertiesandmicrostructureofbsolidifytialalloysbyboronadditionandmultistepsforgingprocess
AT tianjing improvedpropertiesandmicrostructureofbsolidifytialalloysbyboronadditionandmultistepsforgingprocess
AT zhangdongdong improvedpropertiesandmicrostructureofbsolidifytialalloysbyboronadditionandmultistepsforgingprocess
AT yangjianhui improvedpropertiesandmicrostructureofbsolidifytialalloysbyboronadditionandmultistepsforgingprocess

Ejemplares similares