Microstructural investigation on cyclic bending deformation and fracture of aluminum wire

Deformation and fracture behavior in aluminum and Al–1.0 mass%Mg alloy wire were investigated under cyclic bending test with the maximum strains up to 0.02 at the specimen surface, in order to develop light weight electric wire for automobiles. Microstructural aspects and geometrical characteristics...

Full description

Saved in:
Bibliographic Details
Published inJournal of Japan Institute of Light Metals Vol. 68; no. 5; pp. 243 - 249
Main Authors Ikeya, Hayato, Umezawa, Osamu, Fukutomi, Hiroshi
Format Journal Article
LanguageEnglish
Japanese
Published Tokyo The Japan Institute of Light Metals 30.05.2018
Japan Science and Technology Agency
Subjects
Aluminum
Automobiles
Crack initiation
Crack propagation
cyclic bending
Deformation
Electric wire
fatigue crack
Fatigue cracks
Fatigue failure
Fracture mechanics
Grain boundaries
grain boundary crack
Grain size
Inclination angle
Magnesium base alloys
Weight reduction
Work hardening
Online AccessGet full text

Cover

More Information
Summary:Deformation and fracture behavior in aluminum and Al–1.0 mass%Mg alloy wire were investigated under cyclic bending test with the maximum strains up to 0.02 at the specimen surface, in order to develop light weight electric wire for automobiles. Microstructural aspects and geometrical characteristics of the fatigue crack initiation sites were examined where electron back scattering diffraction (EBSD) analysis were employed to make the relationship between partially cracked grain boundaries and activated slip systems clarified. Grain size strongly affected the number of cycles to fracture. The fatigue cracks were generated at the grain boundaries with the inclination angles of 40–60 degrees against the tension-compression direction. Both deformation continuity at the grain boundaries and the work hardening inside crystal grains have effects on the number of cycles to fracture in the cyclic bending.
ISSN:0451-5994
1880-8018
DOI:10.2464/jilm.68.243