Weldability of iron aluminides

Conference · Tue Jan 01 04:00:00 EST 1991

OSTI ID:5750516

Zacharia, T; David, S A

Improvements in the ductility of iron aluminide alloys, achieved through control of composition and microstructure, has led to growing interest in using these materials for structural applications. weldability is a key issues in the utilization of these alloys for structural components. This paper describes the welding and welding behavior of an Fe{sub 3}Al alloy (FA-129) containing niobium and carbon. Weldability of this alloy has been found to be a strong function of composition, welding process and processing conditions. Crack free welds were made on both sheet and plate material using the electron beam (EB) welding process. Gas tungsten arc (GTA) welds, on the other hand, exhibited a tendency for delayed cold cracking. However, the study clearly demonstrated that successful welds can be made using matching filler metal and proper choice of processing conditions. 15 ref., 5 figs.

• Research Organization: Oak Ridge National Lab., TN (USA)
• Sponsoring Organization: DOE; USDOE, Washington, DC (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5750516
• Report Number(s): CONF-9105184-6; ON: DE91013730
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
ALUMINIUM ALLOYS
ARC WELDING
CRACKS
FABRICATION
GAS TUNGSTEN-ARC WELDING
INTERMETALLIC COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
JOINING
MECHANICAL PROPERTIES
WELDABILITY
WELDING