Structural and magnetic changes in hydrogenated TiFe1−xNix alloys

► Systematic study of hydrogen influence on magnetic properties of TiFe1−xNix alloys. ► B2 to B19 phase transition was probed by XRD and VSM. ► Hydrogen thermal desorption was recorded by mass-spectrometry. ► 1H NMR spin-lattice relaxation time T1 as a function of temperature was measured.