Dry sliding tribological behavior of AZ31 magnesium alloy irradiated by high-intensity pulsed ion beam

2010 ◽  
Vol 257 (1) ◽  
pp. 72-81 ◽  
Author(s):  
P. Li ◽  
M.K. Lei ◽  
X.P. Zhu
Keyword(s):  
Magnesium Alloy ◽  
High Intensity ◽  
Tribological Behavior ◽  
Ion Beam ◽  
Az31 Magnesium Alloy ◽  
Dry Sliding

Wear mechanism of AZ31 magnesium alloy irradiated by high-intensity pulsed ion beam

2010 ◽  
Vol 204 (14) ◽  
pp. 2152-2158 ◽  
Author(s):  
P. Li ◽  
M.K. Lei ◽  
X.P. Zhu ◽  
X.G. Han ◽  
C. Liu ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Wear Mechanism ◽  
High Intensity ◽  
Ion Beam ◽  
Az31 Magnesium Alloy

Corrosion Behavior of AZ31 Magnesium Alloy with Microarc Oxidation Film Irradiated by High-Intensity Pulsed Ion Beam

2008 ◽  
Vol 373-374 ◽  
pp. 460-463 ◽  
Author(s):  
X.G. Han ◽  
P. Li ◽  
X.P. Zhu ◽  
M.K. Lei
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
High Intensity ◽  
Electrochemical Impedance ◽  
Ion Beam ◽  
Microarc Oxidation ◽  
Az31 Magnesium Alloy ◽  
Noticeable Improvement ◽  
Original Films ◽  
Sealing Layer

The microarc oxidation (MAO) films on AZ31 magnesium alloy were modified by high-intensity pulsed ion beam (HIPIB) at an ion current density of 200 A/cm2 with 1-5 shots. The modified MAO films presented a corrosion resistance superior to that of the original films. Scanning electron microscopy (SEM) observation revealed that a sealing layer was formed on the MAO films by HIPIB irradiation. The corrosion behaviors of the MAO films in 3.5 % NaCl solution were characterized by using electrochemical impedance spectroscopy (EIS). The noticeable improvement in the corrosion resistance of MAO films is attributed to the blocking effect of the sealing layer that hinders the process of electrolyte penetrating the MAO films to the magnesium alloy.

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.

Influence of Ion Current Density on the Surface Morphology of AZ31 Magnesium Alloy Irradiated by High-Intensity Pulsed Ion Beam

2011 ◽  
Vol 391-392 ◽  
pp. 868-871
Author(s):  
Peng Li ◽  
Y.X. Wang ◽  
L. Xue
Keyword(s):  
Magnesium Alloy ◽  
Current Density ◽  
Ion Beam ◽  
Surface Profile ◽  
Ion Current ◽  
Az31 Magnesium Alloy ◽  
Horizontal Wave ◽  
Surface Profiles ◽  
Surface Morphologies ◽  
Ion Current Density

HIPIB irradiation into AZ31 magnesium alloy is performed at ion current density of 100-300 A/cm2 with 1 shot. The surface morphologies and surface profiles of the irradiated AZ31 magnesium alloy samples are characterized by scanning electron microscopy (SEM) and profilometer, respectively. It is found that HIPIB irradiation leads to the formation of crater in local region of irradiated samples, and crater density increases with increasing ion current density. Both the surface roughness that reflects the vertical wave of surface profile and the mean spacing of surface profile irregularities that reflects the horizontal wave of surface profile increase as ion current density increases. These results are in agreement with the SEM observation on the irradiated surface.

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