Abstract
The addition of aluminum to titanium is known to reduce the embrittling effect of hydrogen on the metal. NMR measurements of hydrogen have been performed on Ti-Al-H alloys in order to ascertain how aluminum affects the behavior of hydrogen in titanium. NMR absorption curves and the temperature dependence of T1 were obtained for various concentrations of hydrogen in titanium-aluminum alloys representative of the random and ordered phases of the Ti-Al system. The results are compared to those of hydrogen in aluminum free titanium and show that the hydrogen is located in three different crystallographic environments having different diffusion characteristics. Heat treatment seems to shift the hydrogen sites and a tentative crystallographic model is presented to explain our results. The role of aluminum on the inhibition of hydrogen embrittlement of titanium is discussed and our data indicates that heat treatment may be beneficial in alleviating this problem. It is also shown how the techniques applied in this study can be used to find quantitatively the optimum heat treatment and alloy concentration for reducing hydrogen embrittlement.
| Original language | English |
|---|---|
| Pages (from-to) | 33-45 |
| Number of pages | 13 |
| Journal | Acta Metallurgica |
| Volume | 22 |
| Issue number | 1 |
| DOIs | |
| State | Published - 1 Jan 1974 |
ASJC Scopus subject areas
- General Engineering