TEM studies of microtwins in the L1[sub 0] phase in 63. 1 at. % NiAl

Journal Article · Wed Dec 01 00:00:00 EST 1993 · Acta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-7151(93)90223-F· OSTI ID:5963245

Murthy, A S; Goo, E ^[1]

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1. Univ. of Southern California, Los Angeles, CA (United States). Dept. of Materials Science and Engineering

The high resolution electron microscopy and optical diffraction studies on regions of L1[sub 0] phase containing high density twins in 63.1 at.% NiAl have shown the presence of stacked structures of varying stacking periodicities. These stacked structures, which may be considered as periodically microtwinned L1[sub 0], are observed to be present in regions of L1[sub 0] phase that exhibited profuse streaking, sharp satellites, or both, along (1[bar 1]1)L1[sub 0] reflection. A stacking periodicity of 7, which corresponds to the 7R structure, is, however, observed to be the most predominant.

• DOE Contract Number: FG03-88ER45346
• OSTI ID: 5963245
• Journal Information: Acta Metallurgica et Materialia; (United States), Vol. 41:12; ISSN 0956-7151
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
MICROSTRUCTURE
NICKEL BASE ALLOYS
BINARY ALLOY SYSTEMS
PHASE STUDIES
PHASE TRANSFORMATIONS
ALLOY SYSTEMS
ALLOYS
NICKEL ALLOYS
360102* - Metals & Alloys- Structure & Phase Studies