Internal stress distribution for generating closure domains in laser-irradiated Fe–3%Si(110) steels

Internal stress distribution for generating closure domains occurring in laser-irradiated Fe–3%Si(110) steels was investigated using high-energy X-ray analysis and domain theory based on the variational principle. The measured triaxial stresses inside the specimen were compressive and the stress in...

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Bibliographic Details
Published in:Journal of applied physics 2015-05, Vol.117 (17)
Main Authors: Iwata, Keiji, Imafuku, Muneyuki, Suzuki, Tamaki, Shobu, Takahisa, Orihara, Hideto, Sakai, Yusuke, Akita, Koichi, Ohya, Shin-Ichi, Ishiyama, Kazushi
Format: Article
Language:English
Subjects:
Axial stress
Compressive properties
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
DOMAIN STRUCTURE
Domains
IRRADIATION
LASER RADIATION
Lasers
Mathematical analysis
PHYSICAL RADIATION EFFECTS
Residual stress
RESIDUAL STRESSES
ROLLING
Rolling direction
SILICON ALLOYS
Silicon steels
STEELS
Stress concentration
Stress distribution
VARIATIONAL METHODS
X RADIATION
X ray analysis
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Summary:Internal stress distribution for generating closure domains occurring in laser-irradiated Fe–3%Si(110) steels was investigated using high-energy X-ray analysis and domain theory based on the variational principle. The measured triaxial stresses inside the specimen were compressive and the stress in the rolling direction became more dominant than stresses in the other directions. The calculations based on the variational principle of magnetic energy for closure domains showed that the measured triaxial stresses made the closure domains more stable than the basic domain without closure domains. The experimental and calculation results reveal that the laser-introduced internal stresses result in the occurrence of the closure domains.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4916183