Analysis of heat-affected zone cracking in Ni/sub 3/Al alloys

Conference · Wed Jan 01 00:00:00 EST 1986

OSTI ID:5908905

Santella, M L; Maguire, M C; David, S A

A key issue in the development of Ni/sub 3/Al for engineering applications is their weldability. Detailed welding studies have been done which show that iron-containing nickel aluminides are prone to heat-affected zone (HAZ) cracking. Hot ductility testing of these alloys has suggested that grain boundary cohesive strength controls high temperature ductility and the resistance to HAZ cracking. This analysis cannot, however, be used to explain the behavior of other aluminide alloys. The intention of this work is to more fully characterize the relationship between mechanical behavior and HAZ cracking susceptibility for Ni/sub 3/Al alloys.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5908905
• Report Number(s): CONF-8604123-2; ON: DE86009449
• Resource Relation: Conference: 67. annual American Welding Society meeting, Atlanta, GA, USA, 13 Apr 1986
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
HEAT AFFECTED ZONE
WELDABILITY
NICKEL BASE ALLOYS
INTERMETALLIC COMPOUNDS
ALLOYS
NICKEL ALLOYS
ZONES
360101* - Metals & Alloys- Preparation & Fabrication