Influence of lamellar lath orientation on crack propagation in a gamma TiAl alloy

Journal Article · Sat Mar 01 04:00:00 EST 1997 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(96)00412-5· OSTI ID:455184

Chen, M; Lin, D; Chen, D ^[1]

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1. Shanghai Jiao Tong Univ. (China). Dept. of Materials Science and Engineering

The attractive properties, such as low density, good oxidation resistance and high-temperature strength retention, make TiAl alloys most suitable for applications in aerospace and automobile industries. However, the low room temperature ductility and toughness which strongly depend on the microstructure restrict widespread applications of TiAl alloys. By controlling the volume fraction of lamellae, the mechanical properties of two-phase TiAl alloys can be improved. In this paper, the influence of lamellar lath orientation on crack propagation has been investigated by in situ straining TEM observation.

• OSTI ID: 455184
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 5 Vol. 36; ISSN SCMAF7; ISSN 1359-6462
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
36 MATERIALS SCIENCE
AEROSPACE INDUSTRY
ALUMINIUM ALLOYS
AUTOMOBILES
CRACK PROPAGATION
EXPERIMENTAL DATA
GRAIN ORIENTATION
LAMELLAE
STRAINS
TITANIUM ALLOYS