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Influence of particulate size on creep properties of TiB-reinforced orthorhombic Ti-22Al-27Nb

Hausmann, Joachim and Emura, Satoshi and Hagiwara, Masuo (2005) Influence of particulate size on creep properties of TiB-reinforced orthorhombic Ti-22Al-27Nb. In: 15th International Conference on Composite Materials, CD-ROM. ICCM-15. 15th International Conference on Composite Materials, 2005-06-27 - 2005-07-01, Durban (South Africa). ISBN 1-86840-589-3

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Abstract

Intermetallic titanium alloys based on the orthorhombic phase Ti2-Al-Nb exhibit a higher ductility and fracture toughness compared to other intermetallic systems such as TiAl and super-2 (Ti3Al) [1]. These are under development for applications up to 700°C in aeronautic gasturbines. The reinforcement with titanium boride (TiB) particulates leads to an improvement of the mechanical properties. TiB is chemically and physically compatible with titanium alloys, especially with respect on the coefficient of thermal expansion. The effect of the reinforcement is influenced not only by the volume content but also by the size of particulates. Subject of this study are the creep properties of Ti-22Al-27Nb alloy reinforced with 6.5% TiB. It has been reported recently, that smaller particulates enhances the tensile strength as well as the fatigue strength [2]. Reasons for the additional reinforcing effects can be found in the micromechanisms of plastic deformation such as blocking of dislocations.

Item URL in elib:https://elib.dlr.de/20415/
Document Type:Conference or Workshop Item (Speech)
Title:Influence of particulate size on creep properties of TiB-reinforced orthorhombic Ti-22Al-27Nb
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hausmann, JoachimUNSPECIFIEDUNSPECIFIED
Emura, SatoshiNIMS Tsukuba, JapanUNSPECIFIED
Hagiwara, MasuoNIMS Trukuba, JapanUNSPECIFIED
Date:27 June 2005
Journal or Publication Title:15th International Conference on Composite Materials
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:CD-ROM
Editors:
EditorsEmail
Verijenko, ViktorUNSPECIFIED
Publisher:ICCM-15
ISBN:1-86840-589-3
Status:Published
Keywords:metal matrix composites, particulate reinforcement, titanium, intermetallics, orthorhombic, creep
Event Title:15th International Conference on Composite Materials
Event Location:Durban (South Africa)
Event Type:international Conference
Event Dates:2005-06-27 - 2005-07-01
Organizer:ICCM
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Propulsion Systems (old)
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Fan and Compressor Technologies (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Light Metal Composites
Deposited By: Hausmann, Dr.-Ing. Joachim
Deposited On:16 Dec 2005
Last Modified:27 Apr 2009 04:46

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