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Start Over Author "Zhang, L.C." Journal scripta materialia
15 results on '"Zhang, L.C."'

15. Formation of zigzag-shaped {112}〈111〉 β mechanical twins in Ti–24.5 Nb–0.7 Ta–2 Zr–1.4 O alloy

Author

Yang, Y., Li, G.P., Wang, H., Wu, S.Q., Zhang, L.C., Li, Y.L., and Yang, K.

Subjects
*GEOMETRIC shapes, *TITANIUM alloys, *NIOBIUM alloys, *TANTALUM alloys, *DISLOCATIONS in metals, *MATHEMATICAL sequences
Abstract

Zigzag-shaped {112}〈111〉 mechanical twins are formed in a cold-compressed Ti–24.5 Nb–0.7 Ta–2 Zr–1.4 O β alloy. The formation process involves a 1/2〈111〉 screw dislocation dissociation, movement of three partials on adjacent {112} planes to form microtwins, constriction of blocked extended dislocation to form a new screw dislocation, as well as cross-slip of such dislocation onto another {112} plane in repetitive sequences. Obstacles to extended dislocation and appropriate stacking fault energy of the β phase should be the key factors for the formation of such twins. [ABSTRACT FROM AUTHOR]

Published
2012
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