MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
Slow Strain Rate Testing of Ti-6Al-4V Alloy in Hydrogen Gas at High Pressures and High Temperatures
Kenichi KoideToshirou AnrakuAkihiro IwaseHiroyuki Inoue
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2017 Volume 58 Issue 6 Pages 886-891

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Abstract

A series of slow strain rate tests (SSRTs) were carried out on a Ti-6Al-4V alloy in hydrogen gas at high temperatures (up to 300℃) and high pressures (up to 75 MPa). In order to evaluate the degree of embrittlement of the titanium alloy in a hydrogen gas environment, measurements of tensile strength, elongation and reduction of area were normalized using results obtained in air of atmospheric pressure and in the same temperature range. Results show that Ti-6Al-4V alloy does not exhibit any decrease in tensile strength, elongation or reduction of area in a high pressure hydrogen gas environment.

Fig. 4 Stress-strain curves of Ti-6Al-4V specimens. The SSRTs were carried out in air under the atmospheric pressure and H2 gas with 75 MPa, at 100℃ and 300℃ respectively. Fullsize Image
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© 2017 The Japan Institute of Metals and Materials
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