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vol.111 número3Effect of process control agent (PCA) on the characteristics of mechanically alloyed Ti-Mg powdersThe use of titanium hydride in blending and mechanical alloying of Ti-Al alloys índice de autoresíndice de assuntospesquisa de artigos
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Journal of the Southern African Institute of Mining and Metallurgy

versão On-line ISSN 2411-9717
versão impressa ISSN 0038-223X

Resumo

MATTHEWS, L.A.  e  KNUTSEN, R.D.. Microstructure evolution in Ti-6Al-4V alloy during hydrogen dosing at elevated temperature. J. S. Afr. Inst. Min. Metall. [online]. 2011, vol.111, n.3, pp.155-158. ISSN 2411-9717.

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.

Palavras-chave : Titanium; hydrogen embrittlement; impact energy.

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