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Journal of the Southern African Institute of Mining and Metallurgy

On-line version ISSN 2411-9717

J. S. Afr. Inst. Min. Metall. vol.111 n.3 Johannesburg  2011

 

TRANSACTION PAPER

 

Microstructure evolution in Ti-6Al-4V alloy during hydrogen dosing at elevated temperature

 

 

L.A. Matthews; R.D. Knutsen

Centre for Materials Engineering, Mech Eng, University of Cape Town

 

 


SYNOPSIS

The embrittlement of the Ti-6Al-4V alloy by hydrogen dosing at elevated temperature has been investigated. Metal coupons were subjected to isothermal treatments in a partial hydrogen atmosphere in the temperature range from 650ºC-950ºC and the degree of embrittlement after treatment was determined by dropweight impact testing. Embrittlement was found to be inversely related to reaction temperature as a result of the combined effects of greater hydrogen absorption and titanium hydride precipitation at the lower isothermal temperatures.

Keywords: Titanium, hydrogen embrittlement, impact energy


 

 

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References

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