Numéro
J. Phys. IV France
Volume 04, Numéro C3, Février 1994
36ème Colloque de Métallurgie de l'INSTN
CHANGEMENTS DE PHASES ET MICROSTRUCTURES
Page(s) C3-117 - C3-122
DOI http://dx.doi.org/10.1051/jp4:1994316
36ème Colloque de Métallurgie de l'INSTN
CHANGEMENTS DE PHASES ET MICROSTRUCTURES

J. Phys. IV France 04 (1994) C3-117-C3-122

DOI: 10.1051/jp4:1994316

Assemblage par soudage diffusion de deux superalliages. Aspects diffusionnels et microstructuraux au niveau du joint

Y. BIENVENU1, M.L. DUPONT2, F. SCHWARTZ3 and J.C. GARCIA4

1  Centre des Matériaux de l'Ecole des Mines de Paris, BP. 87, 91003 Evry cedex, France
2  Université Paris-Sud, Orsay
3  SNECMA, Gennevilliers, France
4  TURBOMECA, Tarnos, France


Abstract
Diffusion bonding is the prefered technique to join modern nickel based superalloys such as an aero-engine disk type material (processed by powder metallurgy to resist low cycle fatigue at moderate temperature) and a large grain cast or directionally solidified material resisting to creep. The microstructure in the vicinity of the joint is affected by diffusion, especially the γ' phase. In turn mechanical properties are affected by the transitions from one structure to the other.



© EDP Sciences 1994