TEM and computer image simulation studies on the dissociation of superdislocations in L1{sub 2} Al{sub 3}Ti alloy
Book
·
OSTI ID:72538
- Shanghai Jiao Tong Univ., Shanghai (China). Dept. of Materials Science
TEM investigation associated with computer image simulations were conducted to determine the dislocation core structure in the L1{sub 2} Al{sub 67}Mn{sub 8}Ti{sub 25} alloy deformed at room temperature. It is identified that the a{l_angle}110{r_angle} superdislocations dissociated into pairs of a/3{l_angle}112{r_angle} superpartials with SISF between them. The theoretical and experimental micrographs are in good agreement under various diffraction conditions. The unusual temperature dependence of flow stress at low temperature can be related to the SISF-type dissociation.
- OSTI ID:
- 72538
- Report Number(s):
- CONF-941144--; ISBN 1-55899-265-0
- Country of Publication:
- United States
- Language:
- English
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