High-Strength High-ductility Cobalt-Iron Alloys
- 1 March 1969
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 40 (3) , 1579-1580
- https://doi.org/10.1063/1.1657779
Abstract
Through careful control of final heat treatment, it has been found that commercial grade cobalt‐iron alloys (49% Co, 49% Fe, and 2% V) can have both good room temperature mechanical properties and reasonable high field permeabilities in the partially recrystallized condition. As an example, on tensile samples from one commercial heat, an average yield strength of greater than 90 000 psi was obtained together with elongations in excess of 10% for one particular annealing treatment. Although the magnetic characteristics were somewhat degraded, the Btip (H = 100 oersteds) exceeded 22.5 kG. When similar samples were completely recrystallized, yield strength did not exceed 70 000 psi while ductility was never larger than 8%. An interesting feature of the investigation was the fact that the maximum ductility was obtained on samples with a partially‐recrystallized structure. Possible mechanisms are discussed, which relate this phenomena to atomic ordering and recovery‐recrystallization behavior.This publication has 3 references indexed in Scilit:
- The mechanical properties of ordered alloysPublished by Elsevier ,2003
- Magnetic Materials for Space Power SystemsJournal of Applied Physics, 1967
- Brittleness of Cobalt-Iron AlloysJournal of Applied Physics, 1959