INFLUENCE OF DIFFUSIVITY, ELASTIC MODULUS, AND STACKING FAULT ENERGY ON THE HIGH TEMPERATURE CREEP BEHAVIOR OF ALPHA BRASSES,
Abstract
The steady state creep bahavior of three compositions of alpha-brass (90, 80, and 70 A/O copper) was investigated in the temperature range 550 to 700 C. Compressional creep testing was performed in dry, deoxidized hydrogen at stresses of 2800, 3400 and 4000 psi. Activation energies for creep were observed to be 38,600, 38,000 and 31,000 cal/mole for alloys containing 90, 80 and 70 A/O copper, respectively. As these values closely approximate chemical diffusion activation energies, it is thought that the rate controlling mechanism in creep of alpha-brass in the stress and temperature range studied is diffusion dependent. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1965
- Accession Number
- AD0615927
Entities
People
- O. D. Sherby
- R. M. Bonesteel
Organizations
- Stanford University