EBSD analysis of fatigue crack initiation behavior in coarse-grained AZ31 magnesium alloy |
| |
| Affiliation: | 1. Department of Mechanical Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan;2. Murata Machinery Ltd., 163 Takeda-Mukaishiro-cho, Fushimi-ku, Kyoto 612-8686, Japan;1. Department of Metallurgical & Materials Engineering, University of Tehran, Tehran, Iran;2. Departamento de Ciencia de Materialese Ingeniería Metalúrgica, ETSEIB, Polytecnic University of Catalonia, Av. Diagonal 647, 08028 Barcelona, Spain;3. Fundación CTM, Plaza de la Ciencai 2, 08243 Manresa, Spain;1. College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China;2. National Engineering Research Centre for Magnesium Alloy, Chongqing University, Chongqing 400045, China;1. Department of Mechanical Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan;2. Okuma Corp. Ltd., 25-1 Oguchi-cho, Niwa-gun, Aichi 480-0193, Japan |
| |
| Abstract: | Plane bending fatigue tests had been conducted to investigate fatigue crack initiation mechanism in coarse-grained magnesium alloy, AZ31, with hexagonal close-packed (hcp) crystallographic structure. The initial crystallographic structure was analyzed by an electron backscatter diffraction (EBSD) method. Subsequently, a fatigue test was periodically terminated and time-series EBSD analyses were performed. Basal slip and primary twin operated predominantly. In a twin band, secondary twin operated, and resulted in the fatigue crack initiation. The crack initiation was strongly affected by Schmid factors in the grains and twin bands. |
| |
| Keywords: | Magnesium alloy Fatigue crack initiation EBSD analysis Crystallographic orientation |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
