Título
Integration of Hot Isostatic Pressing and Heat Treatment for Advanced Modified gamma-TiAl TNM AlloysAutor-a (de otra institución)
Otras instituciones
Ruhr-Universität BochumIndustria de TurboPropulsores SAU
Versión
Version publicada
Derechos
© 2022 The AuthorsAcceso
Acceso abiertoVersión del editor
https://doi.org/10.3390/ma15124211Publicado en
Materials Vol. 15. N. 12. Artículo 4211. June, 2022Editor
MDPIPalabras clave
titanium aluminide
integrated hot isostatic pressing heat treatment
creep
investment casting ... [+]
integrated hot isostatic pressing heat treatment
creep
investment casting ... [+]
titanium aluminide
integrated hot isostatic pressing heat treatment
creep
investment casting
chemical composition [-]
integrated hot isostatic pressing heat treatment
creep
investment casting
chemical composition [-]
Resumen
The conventional processing route of TNM (Ti-Nb-Mo) alloys combines casting and Hot Isostatic Pressing (HIP) followed by forging and multiple heat treatments to establish optimum properties. This is a ... [+]
The conventional processing route of TNM (Ti-Nb-Mo) alloys combines casting and Hot Isostatic Pressing (HIP) followed by forging and multiple heat treatments to establish optimum properties. This is a time-consuming and costly process. In this study we present an advanced alternative TNM alloy processing route combining HIP and heat treatments into a single process, which we refer to as IHT (integrated HIP heat treatment), applied to a modified TNM alloy with 1.5B. A Quintus HIP lab unit with a quenching module was used, achieving fast and controlled cooling, which differs from the slow cooling rates of conventional HIP units. A Ti-42.5Al-3.5Nb-1Mo-1.5B (at.%) was subjected to an integrated two HIP steps at 200 MPa, one at 1250 °C for 3 h and another at 1260 °C for 1 h, both under a protective Ar atmosphere and followed by cooling at 30 K/min down to room temperature. The results were compared against the Ti-43.5Al-3.5Nb-1Mo-0.8B (at.%) thermomechanically processed in a conventional way. Applying IHT processing to the 1.5B alloy does indeed achieve good creep strength, and the secondary creep rate of the IHT processed materials is similar to that of conventionally forged TNM alloys. Thus, the proposed advanced IHT processing route could manufacture more cost-effective TiAl components. [-]
Sponsorship
Gobierno Vasco-Eusko JaurlaritzaID Proyecto
info:eu-repo/grantAgreement/GV/Programa de apoyo a la I+D Empresarial Hazitek 2017/ZE-2017-00029/CAPV/Turbinas de Alta velocidad: Desarrollo de tecnologías de fabricación Avanzada/TALDEAColecciones
- Artículos - Ingeniería [639]
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