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Philosophical Magazine A Volume 70, 1994 - Issue 5
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Original Articles

The structure of translation twins in TiAl investigated by high-resolution electron microscopy

J. G. Zheng National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210008, P. R. China; Center of Interface Analysis and Sensors, Institute of Physical and Theoretical Chemistry, Eberhard-Karls-Universität Tübingen, Auf der Morgenstelle 8, D-72076, Tübingen, Germany
,
Z. G. Liu National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210008, P. R. China
,
Q. Li National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210008, P. R. China
,
J. M. Zhu National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210008, P. R. China
,
D. Feng National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210008, P. R. China
&
G. Frommeyer Max-Planck-Institut für Eisenforschung GmbH, PLZ 40237, Düsseldorf, Germany
Pages 917-924 | Received 22 Dec 1993, Accepted 13 May 1994, Published online: 27 Sep 2006
 

Abstract

Translation twins (T twins) of γ-TiAl (L1O-type structure) in an as-cast two-phase TiAl-Ti3Al intermetallic alloy with Cr addition are characterized by high-resolution electron microscopy and supported by image simulation. The T twin and the matrix are connected through a glide reflection plane at the {111} twin interface, and the glide vector is ½ [101] parallel to the interface. The formation mechanism of the T twins and their possible influence on the deformation mechanism of the material are discussed.

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Related Research Data

The realization of atomic resolution with the electron microscope
Source: IOP Publishing

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