Effect of isothermal forging on the fracture properties of binary [gamma]-base titanium aluminides at room temperature

Journal Article · Fri Jul 15 04:00:00 EDT 1994 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(94)90177-5· OSTI ID:7198950

Gnanamoorthy, R; Mutoh, Y ^[1]; Masahashi, N; Mizuhara, Y ^[2]

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1. Nagaoka Univ. of Technology, Nagaoka (Japan)
2. Nippon Steel Corp., Kawasaki (Japan)

Gamma base titanium aluminides are light in weight and possess excellent high temperature properties such as strength, stiffness and oxidation resistance. Mechanical properties of [gamma]-base titanium aluminides depend on the microstructure, alloying addition and processing route. Influences of microstructure and alloying addition on the fracture properties have been investigated. However, the influence of processing route on fracture properties is not clear at present. In the present study, the flexural strength, the flexural strength, fracture toughness and fatigue crack growth properties of (a) cast and heat treated and (b) cast, heat treated and subsequently isothermal forged binary Ti-50Al (compositions are mentioned in atomic percent) with equiaxed microstructures are investigated. Fracture surface and crack growth path investigations are performed.

• OSTI ID: 7198950
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 31:2; ISSN 0956-716X; ISSN SCRMEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
ALUMINIUM ALLOYS
CRACK PROPAGATION
DATA
EXPERIMENTAL DATA
FLEXURAL STRENGTH
FRACTURE PROPERTIES
GRAIN REFINEMENT
GRAIN SIZE
INFORMATION
MECHANICAL PROPERTIES
MICROSTRUCTURE
NUMERICAL DATA
SIZE
TITANIUM ALLOYS