Effect of hydrogenation on microstructure and phase transformation of Ti40 alloy

Xuemin Zhang; Yongqing Zhao; Weidong Zeng; Yongnan Chen; Fengying Zhang; Xiaodong Tian

Effect of hydrogenation on microstructure and phase transformation of Ti40 alloy

Xuemin Zhang, Yongqing Zhao, Weidong Zeng, Yongnan Chen, Fengying Zhang, Xiaodong Tian

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Microstructure evolution and phase transformation of β phase Ti40 alloy before and after hydrogenation were investigated by XRD, OM, SEM, EDX and TEM. The results show that the amount of matrix β phase decreases while the modified β with the same bcc structure but different elemental composition increases gradually as the hydrogen content increases; the small particles of η phase appear around the grain boundaries when the hydrogen content reaches above 0.3%. The structure of η phase is fcc and the lattice constant is 0.4377 nm. The composition of η phase is Ti:V:Cr = 38.10:35.16:26.66. The hydrogenation and phase transformation of Ti40 alloy can be concluded as β→β_Hfor low hydrogen content (≤0.2wt%) and β→β_H+modified β+η for high hydrogen content (>0.3wt%).

Original language	English
Pages (from-to)	2219-2222
Number of pages	4
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	41
Issue number	12
State	Published - Dec 2012

Keywords

η phase
Hydrogenation
Modified β
Ti40 alloys

Cite this

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title = "Effect of hydrogenation on microstructure and phase transformation of Ti40 alloy",

abstract = "Microstructure evolution and phase transformation of β phase Ti40 alloy before and after hydrogenation were investigated by XRD, OM, SEM, EDX and TEM. The results show that the amount of matrix β phase decreases while the modified β with the same bcc structure but different elemental composition increases gradually as the hydrogen content increases; the small particles of η phase appear around the grain boundaries when the hydrogen content reaches above 0.3%. The structure of η phase is fcc and the lattice constant is 0.4377 nm. The composition of η phase is Ti:V:Cr = 38.10:35.16:26.66. The hydrogenation and phase transformation of Ti40 alloy can be concluded as β→βHfor low hydrogen content (≤0.2wt%) and β→βH+modified β+η for high hydrogen content (>0.3wt%).",

keywords = "η phase, Hydrogenation, Modified β, Ti40 alloys",

author = "Xuemin Zhang and Yongqing Zhao and Weidong Zeng and Yongnan Chen and Fengying Zhang and Xiaodong Tian",

year = "2012",

month = dec,

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journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

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TY - JOUR

T1 - Effect of hydrogenation on microstructure and phase transformation of Ti40 alloy

AU - Zhang, Xuemin

AU - Zhao, Yongqing

AU - Zeng, Weidong

AU - Chen, Yongnan

AU - Zhang, Fengying

AU - Tian, Xiaodong

PY - 2012/12

Y1 - 2012/12

N2 - Microstructure evolution and phase transformation of β phase Ti40 alloy before and after hydrogenation were investigated by XRD, OM, SEM, EDX and TEM. The results show that the amount of matrix β phase decreases while the modified β with the same bcc structure but different elemental composition increases gradually as the hydrogen content increases; the small particles of η phase appear around the grain boundaries when the hydrogen content reaches above 0.3%. The structure of η phase is fcc and the lattice constant is 0.4377 nm. The composition of η phase is Ti:V:Cr = 38.10:35.16:26.66. The hydrogenation and phase transformation of Ti40 alloy can be concluded as β→βHfor low hydrogen content (≤0.2wt%) and β→βH+modified β+η for high hydrogen content (>0.3wt%).

AB - Microstructure evolution and phase transformation of β phase Ti40 alloy before and after hydrogenation were investigated by XRD, OM, SEM, EDX and TEM. The results show that the amount of matrix β phase decreases while the modified β with the same bcc structure but different elemental composition increases gradually as the hydrogen content increases; the small particles of η phase appear around the grain boundaries when the hydrogen content reaches above 0.3%. The structure of η phase is fcc and the lattice constant is 0.4377 nm. The composition of η phase is Ti:V:Cr = 38.10:35.16:26.66. The hydrogenation and phase transformation of Ti40 alloy can be concluded as β→βHfor low hydrogen content (≤0.2wt%) and β→βH+modified β+η for high hydrogen content (>0.3wt%).

KW - η phase

KW - Hydrogenation

KW - Modified β

KW - Ti40 alloys

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SN - 1002-185X

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JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 12

ER -

Effect of hydrogenation on microstructure and phase transformation of Ti40 alloy

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