Effect of microstructure on fatigue behavior of AZ31 magnesium alloy

2007 ◽  
Vol 468-470 ◽  
pp. 214-222 ◽  
Author(s):  
Sotomi Ishihara ◽  
Zhenyu Nan ◽  
Takahito Goshima
Keyword(s):  
Magnesium Alloy ◽  
Fatigue Behavior ◽  
Az31 Magnesium Alloy ◽  
Effect Of Microstructure

Effect of microstructure in the fatigue behavior of AZ31 magnesium alloy

2004 ◽  
Vol 2004.41 (0) ◽  
pp. 5-6
Author(s):  
Zhenyu Nan ◽  
Sotomi Ishihara ◽  
Takahito Goshima ◽  
Masahiro Yamamoto
Keyword(s):  
Magnesium Alloy ◽  
Fatigue Behavior ◽  
Az31 Magnesium Alloy ◽  
Effect Of Microstructure

Fatigue Test of Small Sized AZ31 Magnesium Alloy Using Micropillar Specimen

2012 ◽  
Vol 525-526 ◽  
pp. 165-168 ◽  
Author(s):  
Satoshi Mizuno ◽  
Toshifumi Kakiuchi ◽  
Yoshihiko Uematsu
Keyword(s):  
Magnesium Alloy ◽  
Fatigue Test ◽  
Fatigue Testing ◽  
Rectangular Cross Section ◽  
Fatigue Behavior ◽  
Ion Beam ◽  
Az31 Magnesium Alloy ◽  
Piezo Actuator ◽  
Small Displacement ◽  
Bulk Specimen

The bending fatigue tests were performed using the small sized specimens of AZ31 magnesium alloy fabricated by the focused ion beam (FIB) processing to investigate the scale effect on the fatigue behavior. For the fatigue test of the small sized specimens, the fatigue testing apparatus was constructed by the piezo actuator and the high-resolution microscope for controlling the very small displacement. The specimen was micropillar-shaped with the rectangular cross section of 3μm x 8μm and the height of 40μm. The fatigue strengths of the small sized specimens were higher than those of the bulk sized specimens. The fracture surfaces were also investigated carefully compared with those of the bulk specimen.

1248 Effect of microstructure on fatigue behavior of extruded magnesium alloy

2008 ◽  
Vol 2008.1 (0) ◽  
pp. 171-172
Author(s):  
Ken TANIGUCHI ◽  
Sotomi ISHIHARA ◽  
Hideki YAMAGISHI ◽  
Takahito GOSHIMA
Keyword(s):  
Magnesium Alloy ◽  
Fatigue Behavior ◽  
Effect Of Microstructure

High-frequency corrosion fatigue behavior of AZ31 magnesium alloy in different environments

2013 ◽  
Vol 228 (10) ◽  
pp. 1645-1657 ◽  
Author(s):  
XL He ◽  
YH Wei ◽  
LF Hou ◽  
ZF Yan ◽  
CL Guo
Keyword(s):  
Magnesium Alloy ◽  
Corrosion Fatigue ◽  
High Frequency ◽  
Crack Nucleation ◽  
Fatigue Behavior ◽  
Az31 Magnesium Alloy ◽  
Geometrical Shape ◽  
Loading Frequency ◽  
Initiation Mechanism ◽  
Corrosion Failure

The high-frequency corrosion fatigue behavior of extruded AZ31 magnesium alloy was investigated in different environments: air, gear oil and 3.5% NaCl solution. Compared with that in air, the corrosion fatigue limits were degraded by approximately 3.52% and 58.91%, respectively, and the corrosion fatigue lives were shortened by about 13.43% and 89.36%, respectively. In the same environment, the high-frequency fatigue limits are all higher than those tested at low frequency. The specimen geometrical shape plays a certain factor on stage characteristics of S–N curves. Compared with that of arc transition specimens, the stress sensitivity of line transition specimens is only reflected in a relatively high cycle fatigue life region. Different environments influence the corrosion failure kinetics processes (the crack initiation mechanism), but do not change the fatigue fracture mechanism of the alloy, and the higher loading frequency only accelerate the crack nucleation processes.

Role of different material processing methods on the fatigue behavior of an AZ31 magnesium alloy

2013 ◽  
Vol 52 ◽  
pp. 131-143 ◽  
Author(s):  
M. Lugo ◽  
J.B. Jordon ◽  
K.N. Solanki ◽  
L.G. Hector ◽  
J.D. Bernard ◽  
...  
Keyword(s):  
Material Processing ◽  
Magnesium Alloy ◽  
Fatigue Behavior ◽  
Az31 Magnesium Alloy ◽  
Processing Methods

Low Cycle Fatigue Behavior of As-Extruded AZ31 Magnesium Alloy

2011 ◽  
Vol 686 ◽  
pp. 202-207
Author(s):  
Ping Li Mao ◽  
Zheng Liu ◽  
Yang Li ◽  
Li Jia Chen
Keyword(s):  
Magnesium Alloy ◽  
Strain Amplitude ◽  
Low Cycle Fatigue ◽  
Fatigue Behavior ◽  
Fatigue Cracks ◽  
Az31 Alloy ◽  
Plastic Strain Amplitude ◽  
Az31 Magnesium Alloy ◽  
Total Strain Amplitude ◽  
Fracture Surfaces

The investigation on fatigue behavior and fracture surfaces of fatigued specimens of as-extruded AZ31 magnesium alloy can provide a reliable theoretical foundation for both fatigue resistant design and reasonable application of magnesium alloys. Through total-strain-amplitude controlled fatigue tests and analysis on fracture surfaces of fatigued specimens, the behavior of cyclic stress response and fatigue life as well as fracture mechanism were identified for as-extruded AZ31 magnesium alloy. The experimental results show that the extruded AZ31 alloy exhibits significant cyclic strain hardening, the relation between elastic strain amplitude, plastic strain amplitude and reversals to failure can be described by Basquin and Coffin-Manson equations respectively. In addition, it has been found that fatigue cracks initiate and propagate in a transgranular mode.

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