High Temperature Multiaxial Creep Testing of NIMONIC 115
Abstract
Materials in present day gas turbine components are known to operate under complex stress situations. In recent years much effort has been devoted to quantifying the state of stress in multiaxial geometries and to studying the deformation and rupture mechanisms involved. Little attention has however been paid to the practical aspects of multiaxial testing and to understanding the material behaviour under complex stress states. A high temperature multiaxial testing facility has been commissioned using the nickel-base alloy Nimonic 115 and the difficulties associated with this technique for testing highlighted. Materials in many gas turbine components operate under complex stress situations. These multiaxial stresses may arise from rotation, such as the radial and tangential stress in discs; from the action of uniaxial or biaxial loadings on stress raisers such as fir-tree roots and bolt holes; or through the superposition of stressing modes as with the centrifugal and bending forces on blades combining with loads due to temperature variations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1990
- Accession Number
- ADA220971
Entities
People
- L. W. Candler
Organizations
- Royal Aircraft Establishment