Open AccessMicroscopic defects in Ti-Mo alloy hydrides studied by small-angle X-ray scattering
Author(s) -
Xiaoming Du,
WU Erdong,
Dong Bao-Zhong,
Zhonghua Wu,
Yuan Xia
Publication year - 2008
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.57.5782
Subject(s) - small angle x ray scattering , materials science , alloy , hydride , scattering , crystallography , crystal structure , dislocation , crystal (programming language) , small angle scattering , metallurgy , optics , composite material , chemistry , metal , physics , programming language , computer science
In this workthe microscopic defects in Ti-Mo alloy hydrides were studied by using small-angle X-ray scattering (SAXS) technique. The results show that the SAXS intensity measured for hydride of 5at Mo alloy was lower than that of other hydrides in the high scattering angle range. The crystal grains and its internal sub-structures in the hydrides are the scatterers which cause SAXS. The sub-structures are induced by the large number of dislocations in the hydrides produced during hydrogenation. The crystal structure of Mo 5at alloy is mainly hcpbut that of the other alloys is bcc. The hydrides of all these alloys, however, have a fcc crystal structure. Thereforeit is indicated that the Ti-Mo alloys with hcp and bcc crystal structures form the same hydride structurebut induce different types of dislocation defects during hydrogenation.