Effect of hydrogen on the superplasticity of Ti40 alloy with large grains

Xuemin Zhang; Yongqing Zhao; Weidong Zeng

doi:10.1016/j.msea.2010.02.021

Effect of hydrogen on the superplasticity of Ti40 alloy with large grains

Xuemin Zhang, Yongqing Zhao, Weidong Zeng

School of Materials Sience and Engineering

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

34 Scopus citations

Abstract

Thermohydrogen processing (THP) is an attractive approach which uses hydrogen as a temporary element in titanium alloys to modify the microstructure/mechanical properties and workability. In this article, the influence of hydrogen on the superplasticity of single β phase Ti40 (Ti-25V-15Cr-0.2Si) alloy with hydrogenation had been investigated in the temperature range of 840-920°C and strain rate of 5×10^-4-1×10^-2s^-1. The maximum elongation of 478% was obtained at 920°C, 5×10^-4s^-1 with 0.3wt.% H. A significant refinement of average grain size in Ti40-xH alloys during superplastic deformation was found and the grain sizes became much finer with the increase of hydrogen content. The superplastic deformation mechanism of Ti40-xH alloy with large grains could be explained by dynamic recovery and recrystallization.

Original language	English
Pages (from-to)	3489-3492
Number of pages	4
Journal	Materials Science and Engineering: A
Volume	527
Issue number	15
DOIs	https://doi.org/10.1016/j.msea.2010.02.021
State	Published - Jun 2010

Keywords

Dynamic recovery and recrystallization
Hydrogenation
Superplasticity
Titanium alloy

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title = "Effect of hydrogen on the superplasticity of Ti40 alloy with large grains",

abstract = "Thermohydrogen processing (THP) is an attractive approach which uses hydrogen as a temporary element in titanium alloys to modify the microstructure/mechanical properties and workability. In this article, the influence of hydrogen on the superplasticity of single β phase Ti40 (Ti-25V-15Cr-0.2Si) alloy with hydrogenation had been investigated in the temperature range of 840-920°C and strain rate of 5×10-4-1×10-2s-1. The maximum elongation of 478% was obtained at 920°C, 5×10-4s-1 with 0.3wt.% H. A significant refinement of average grain size in Ti40-xH alloys during superplastic deformation was found and the grain sizes became much finer with the increase of hydrogen content. The superplastic deformation mechanism of Ti40-xH alloy with large grains could be explained by dynamic recovery and recrystallization.",

keywords = "Dynamic recovery and recrystallization, Hydrogenation, Superplasticity, Titanium alloy",

author = "Xuemin Zhang and Yongqing Zhao and Weidong Zeng",

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doi = "10.1016/j.msea.2010.02.021",

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TY - JOUR

T1 - Effect of hydrogen on the superplasticity of Ti40 alloy with large grains

AU - Zhang, Xuemin

AU - Zhao, Yongqing

AU - Zeng, Weidong

PY - 2010/6

Y1 - 2010/6

N2 - Thermohydrogen processing (THP) is an attractive approach which uses hydrogen as a temporary element in titanium alloys to modify the microstructure/mechanical properties and workability. In this article, the influence of hydrogen on the superplasticity of single β phase Ti40 (Ti-25V-15Cr-0.2Si) alloy with hydrogenation had been investigated in the temperature range of 840-920°C and strain rate of 5×10-4-1×10-2s-1. The maximum elongation of 478% was obtained at 920°C, 5×10-4s-1 with 0.3wt.% H. A significant refinement of average grain size in Ti40-xH alloys during superplastic deformation was found and the grain sizes became much finer with the increase of hydrogen content. The superplastic deformation mechanism of Ti40-xH alloy with large grains could be explained by dynamic recovery and recrystallization.

AB - Thermohydrogen processing (THP) is an attractive approach which uses hydrogen as a temporary element in titanium alloys to modify the microstructure/mechanical properties and workability. In this article, the influence of hydrogen on the superplasticity of single β phase Ti40 (Ti-25V-15Cr-0.2Si) alloy with hydrogenation had been investigated in the temperature range of 840-920°C and strain rate of 5×10-4-1×10-2s-1. The maximum elongation of 478% was obtained at 920°C, 5×10-4s-1 with 0.3wt.% H. A significant refinement of average grain size in Ti40-xH alloys during superplastic deformation was found and the grain sizes became much finer with the increase of hydrogen content. The superplastic deformation mechanism of Ti40-xH alloy with large grains could be explained by dynamic recovery and recrystallization.

KW - Dynamic recovery and recrystallization

KW - Hydrogenation

KW - Superplasticity

KW - Titanium alloy

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DO - 10.1016/j.msea.2010.02.021

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SN - 0921-5093

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JO - Materials Science and Engineering: A

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IS - 15

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Effect of hydrogen on the superplasticity of Ti40 alloy with large grains

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Keywords

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