The precipitation of γ-deuterides (hydrides) in titanium
作者： O.T. Woo , G.C. Weatherly , C.E. Coleman , R.W. Gilbert
DOI: 10.1016/0001-6160(85)90011-2
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摘要: Abstract The crystal structure of titanium deutende precipitates in specimens containing up to 0.64 at.% deuterium was found be face-centred-tetragonal TiD, c a = 1.12 , isomorphous with γ-ZrH, agreement recent findings Numakura and Koiwa. This phase observed by transmission electron microscopy precipitate on prism habit planes, near-basal planes {2027}, about 27.5° from the basal plane. These can related dislocation mechanisms for formation γ martensitic transformation. In particular, calculated plane is reasonable observation, while result strain Complex precipitation rather common, an example γ-plate consisting sub-units γ-laths shown. Experimentally, presence Ti interfacial ledges effective displacement vectors 〈a〉-direction consistent proposed mechanism γ-plates planes.
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