A criterion for intergranular failure during hot working of a near-gamma titanium aluminide alloy
- Wright Lab. Materials Directorate, Wright-Patterson AFB, OH (United States)
- UES, Inc., Dayton, OH (United States)
Because they are designed for high-temperature service, intermetallic alloys can be difficult to manufacture via conventional hot-working operations. The processing window in terms of strain rates and temperatures that may be utilized to produce sound products of these materials is usually quite narrow. Such problems can be especially severe for ingot-cast forms of these alloys which consist of relatively coarse-grain microstructures. The objective of the present work was to begin the development of models for the hot workability of near-gamma titanium aluminide alloys under high-rate deformation conditions that characterize conventional metalworking processes. For this purpose, isothermal, hot compression test results for a typical near-gamma titanium aluminide were analyzed to formulate a criterion for the formation of wedge cracks in these materials.
- Sponsoring Organization:
- Department of the Air Force, Washington, DC (United States)
- OSTI ID:
- 438605
- Journal Information:
- Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 3 Vol. 36; ISSN 1359-6462; ISSN SCMAF7
- Country of Publication:
- United States
- Language:
- English
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