Portal de Periódicos da CAPES

Diffusion of hydrogen isotopes as a probe to study the atomic microstructure of metals

1991; Elsevier BV; Volume: 172-174; Linguagem: Inglês

10.1016/0022-5088(91)90188-a

1878-2728

Michael Hirscher, H. Kronmüller,

Microstructure and Mechanical Properties of Steels

Magnetic after-effect measurements are very sensitive to short-range reorientation relaxations and represent an ideal tool for the study of hydrogen diffusion even at low concentrations. In this paper we deal with the interaction of hydrogen with defects or different microstructures and with the local reorientations in the vicinity of these structures. Results of hydrogen diffusion in a pure metal with radiation-induced intrinsic atomic defects, in chemically ordered and disordered binary f.c.c. alloys, and in chemically as well as structurally disordered amorphous alloys are presented. The three examples illustrate the use of hydrogen as an internal probe to detect microstructural defects on an atomic scale.