Comparison of Mechanical Properties of TMW Alloys, New Generation of Cast-and-Wrought Superalloys for Disk Applications
Abstract
A new kind of Ni-Co-base disk alloys, named TMW alloys, has been developed on the basis of our innovative concept. Full-scale pancakes (440 mm in diameter and 65 mm in thickness) with an average grain size of about 10 μm were successfully manufactured from TMW alloys by a conventional cast-and-wrought (C&W) processing route. The property assessments of the pancakes indicate that TMW alloys are superior to C&W U720Li alloys in tensile strength and in creep resistance, while the performances of low-cycle fatigue (LCF) and fatigue crack growth (FCG) are comparative.
- Publication:
-
Metallurgical and Materials Transactions A
- Pub Date:
- December 2009
- DOI:
- 10.1007/s11661-009-0032-x
- Bibcode:
- 2009MMTA...40.3047G