A NEW INTERNAL FRICTION PEAK ASSOCIATED WITH TRACE HYDROGEN IN Ti-6Al-4V ALLOY

Du Jia Ju
1981 Le Journal de Physique Colloques  
i i b s t r a c t .-I n t e r n a l f r i c t i o n aeasurements or1 comrnerical Ti-GN-4V a l l o y i n t h e range 100K t o 350X a t about 2 HIz f r e q u e n c i e s reve-,ded t h a t t h e r e w a s n o t o n l y a Snoek r e l a x a t i o n peak of kydrogen atoris i n t h e p-phase a t 116K, b u t a l s o a new s m a l l r e l a x a t i o n peak a t 289E; caused by t h e s m d l amount of hydrogen atoms i n aphase. The mechanism by which t h i s new peak i s produced is sugg e s t e d . The
more » ... gg e s t e d . The a c t i v a t i o n e n e r g i e s f o r d i f f u s i o n of hydrogen atoms i n B -phase and a -phase riere found t o be 5.6 i;cdl/inole and 1 1.1 Kcal/mole res e c t i v e l y . The frequency f a c t o r s were 4.0 x 1014 s-' and 2.1 r 101q s-I r e s p e c t i v e l y . A c c o r d i~g t o t h e h e i g h t of t h e two pe,-s i t is p o s s i b l e t o e v a l u a t e t h e d i s t r c b i t i o n of hydrogen i n trio phases of Ti-GN-4V a l l o y .
doi:10.1051/jphyscol:19815120 fatcat:de4nzzbxrvhh5a56av7dx7ksoq