elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Kontakt | English
Schriftgröße: [-] Text [+]

Creep properties of TiB Particulate-Reinforced Ti-22Al-27Nb Composites

Emura, Satoshi und Hausmann, Joachim und Liying, Zeng und Hagiwara, Masuo (2005) Creep properties of TiB Particulate-Reinforced Ti-22Al-27Nb Composites. XITC Xian International Titanium Conference, 2005-10-18 - 2005-10-20, Xian (China).

Dieses Archiv kann nicht den gesamten Text zur Verfügung stellen.

Kurzfassung

The Ti2AlNb intermetallic alloys, based on the ordered orthorhombic (O) phase, have a higher specific strength, better creep resistance and better workability than conventional titanium aluminides, such as TiAl and Ti3Al. Typical alloy system so far studied is a Ti-22Al-27Nb (mol pct) alloy, consisting primarily of the (O+B2 (ordered BCC)) two-phase microstructure. However, the mechanical properties of these alloys must be improved before commercial applications are feasible. To further improve the mechanical properties of this Ti2AlNb alloy, a TiB particulate-reinforced Ti-22Al-27Nb matrix composite was prepared using the gas-atomized powder metallurgy method. Because of the rapid solidification during the gas atomization process, the TiB particulates dispersed in the composite were extremely fine, with an average diameter of less than 1 μm and lengths ranging up to 5 μm. This composite (PM composite) showed better creep properties at high temperatures than both an unreinforced Ti-22Al-27Nb matrix alloy and a Ti-22Al-27Nb/TiB composite produced using a conventional ingot metallurgy method (IM composite) with relatively coarse (average diameter 5 μm and average length 40 μm) TiB particulates. We have also found that the size of TiB particulate in the PM composite can be controlled by heat treatment at high temperature (around 1473 K), and investigated the effect of the size of dispersed TiB particulates on the creep properties of Ti-22Al-27Nb/TiB composites.

Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Creep properties of TiB Particulate-Reinforced Ti-22Al-27Nb Composites
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Emura, SatoshiNIMS Tsukuba, Japan
Hausmann, JoachimNICHT SPEZIFIZIERT
Liying, ZengNIN Xi'an, China
Hagiwara, MasuoNIMS Tsukuba, Japan
Datum:18 Oktober 2005
Referierte Publikation:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Titanium, Intermetallic, Orthorhombic, MMC, TiB
Veranstaltungstitel:XITC Xian International Titanium Conference
Veranstaltungsort:Xian (China)
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:2005-10-18 - 2005-10-20
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Luftfahrt
HGF - Programmthema:Antriebe
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L ER - Antriebsforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Verdichtertechnologien
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Werkstoff-Forschung > Leichtmetall-Verbundwerkstoffe
Hinterlegt von: Dr.-Ing. Joachim Hausmann
Hinterlegt am:16 Dez 2005
Letzte Änderung:27 Apr 2009 04:46

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Copyright © 2008-2013 Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.