STRAIN AGING OF ALPHA-IRON
Abstract
An investigation was conducted on fine grained lpha-iron wire to measure the influence of the temperature of deformation on strain aging near room temperature. Specimens were deformed various amounts at 77, 195, or 273 K; aged; and the strain aging followed by either internal friction or return of the yied point meaurements. he results show that strain aging occurs in three stages. During the fist stage there is smal, almost immediate return of the yield point. The solute crbon concentration, as measured by internal friction, remains constant in stage but is lower than the concentration in the unsrained contion. In the second stage, the solute concentration decreases while the magnitude of the yield point increases. In the third stage, the solute atoms continue to drain from the solution, the yield point approaches a maximum, and the strain hardening coefficient and flow curve increased. (AUTHOR)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 10, 1961
- Accession Number
- AD0255288
Entities
People
- E. Lautenschlager
- J.o. Brittain
Organizations
- Northwestern University