Effects of fatigue-induced changes in microstructure and stress on domain structure and magnetic properties of Fe-C alloys
Creators
- 1. Ames Laboratory, Iowa State University, Ames, Iowa 50011 (United States)
Description
A study of the effects of microstructural changes on domain structure and magnetic properties as a result of fatigue has been made on Fe-C alloys subjected to either cold work, stress-relief annealing, or heat treatment that produced a ferritic/pearlitic structure. The magnetic properties varied with stress cycling depending on the initial condition of the samples. Variations in coercivity in the initial stage of fatigue were closely related to the changes in dislocation structure. In the intermediate stage of fatigue the observed refinement of domain structures was related to the development of dislocation cell structures and formation of slip bands. In the final stage of fatigue the remanence and maximum permeability decreased dramatically, and this rate of decrease was dependent on the crack propagation rate. (c) 2000 American Institute of Physics
Additional details
Publishing Information
- Journal Title
- Journal of Applied Physics
- Journal Volume
- 87
- Journal Issue
- 9
- Journal Page Range
- p. 6520-6522
- ISSN
- 0021-8979
- CODEN
- JAPIAU
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 32059944
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- CARBON ADDITIONS; DISLOCATIONS; DOMAIN STRUCTURE; EXPERIMENTAL DATA; FATIGUE; HYSTERESIS; IRON ALLOYS; MAGNETIZATION; MICROSTRUCTURE; STRESSES
- Descriptors DEC
- ALLOYS; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; DATA; INFORMATION; LINE DEFECTS; MAGNETIC MOMENTS; MECHANICAL PROPERTIES; NUMERICAL DATA; TRANSITION ELEMENT ALLOYS
- Proposed descriptors and Free-text terms
- fatigue cracks; crystal microstructure; heat treatment; dislocation structure; magnetic permeability; remanence