High cycle fatigue behavior of as-extruded ZK60 magnesium alloy

2009 ◽  
Vol 44 (11) ◽  
pp. 2916-2924 ◽  
Author(s):  
W. C. Liu ◽  
J. Dong ◽  
P. Zhang ◽  
Z. Y. Yao ◽  
C. Q. Zhai ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
High Cycle Fatigue ◽  
Fatigue Behavior ◽  
Cycle Fatigue ◽  
Zk60 Magnesium Alloy

Smooth and notched fatigue performance of aging treated and shot peened ZK60 magnesium alloy

2010 ◽  
Vol 25 (7) ◽  
pp. 1375-1387 ◽  
Author(s):  
Wen-Cai Liu ◽  
Jie Dong ◽  
Ping Zhang ◽  
Xing-Wei Zheng ◽  
Wen-Jiang Ding ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Compressive Residual Stress ◽  
High Cycle Fatigue ◽  
Fatigue Performance ◽  
Fatigue Properties ◽  
Cycle Fatigue ◽  
Notched Specimen ◽  
Notched Specimens ◽  
Zk60 Alloy ◽  
Zk60 Magnesium Alloy

The influence of shot peening (SP) on high cycle fatigue (HCF) performance of smooth and notched specimens of hot-extruded ZK60 magnesium alloy was investigated and compared to that of hot-extruded and T5 aging-treated ZK60 magnesium alloy referred to as ZK60-T5. The increases in fatigue properties at the optimum Almen intensities were found to depend on the material states. In contrast to ZK60 alloy, higher smooth and notched fatigue properties for both unpeened and peened specimens were observed for ZK60-T5 alloy. Meanwhile, the improvement of fatigue life for notched specimen by SP was much more than that for the smooth specimen. The mechanism by which the compressive residual stress induced by SP resulted in the improvement of fatigue performance of smooth and notched specimens for ZK60 and ZK60-T5 alloys was discussed.

Effect of Solid Solution Treatment on Fatigue Behavior of Cast Magnesium Alloy

2013 ◽  
Vol 281 ◽  
pp. 436-440
Author(s):  
You Yang ◽  
Hua Wu ◽  
Zhao Feng Xuan
Keyword(s):  
Solid Solution ◽  
Magnesium Alloy ◽  
Fatigue Fracture ◽  
High Cycle Fatigue ◽  
Fatigue Behavior ◽  
Solution Treatment ◽  
Cycle Fatigue ◽  
Solid Solution Treatment ◽  
Cast Magnesium Alloy ◽  
Cast Magnesium

The effects of solid solution treatment on high cycle fatigue behavior of cast magnesium alloy AZ91D were investigated using an up-and-down load method. High cycle fatigue tests were carried out up to 107cycles at a stress ratio R=0.1 and frequency of 90Hz on specimens using a high frequency fatigue machine. The results showed that the fatigue strength of cast AZ91D magnesium alloy increase from 54.5Mpa to 71.5Mpa after solid solution treatment (T4) at 415°C, keeping temperature 16hours. The micro-fatigue fracture surface of alloy included fatigue initiation area, fatigue crack propagation area and fatigue fracture area. Fatigue crack of the alloys initiate principally at inclusions and shrinks under subsurface. The fatigue fracture of test specimens show the rupture characteristics of quasi-cleavage(as-cast alloy) and toughness(T4 alloy), respectively.

High cycle fatigue behavior of different regions in a low-pressure sand-cast GW103K magnesium alloy component

2014 ◽  
Vol 29 (21) ◽  
pp. 2587-2595 ◽  
Author(s):  
Longkang Jiang ◽  
Wencai Liu ◽  
Yanlei Li ◽  
Guohua Wu ◽  
Wenjiang Ding
Keyword(s):  
Magnesium Alloy ◽  
High Cycle Fatigue ◽  
Fatigue Behavior ◽  
Low Pressure ◽  
Cycle Fatigue ◽  
Alloy Component ◽  
Sand Cast ◽  
Image Position

Abstract

High Cycle Fatigue Behavior of MB8 Magnesium Alloy

2011 ◽  
Vol 314-316 ◽  
pp. 945-948
Author(s):  
You Yang ◽  
Hua Wu ◽  
Xue Song Li
Keyword(s):  
Fatigue Crack ◽  
Magnesium Alloy ◽  
Crack Propagation ◽  
Fatigue Fracture ◽  
Fatigue Crack Propagation ◽  
High Cycle Fatigue ◽  
Fatigue Behavior ◽  
Fatigue Cracks ◽  
Fatigue Tests ◽  
Cycle Fatigue

High cycle fatigue behavior of MB8 magnesium alloy were investigated using an up-and-down load method. High cycle fatigue tests were carried out up to 107cycles at a stress ratio R=0.1 and frequency of 90Hz on specimens using a high frequency fatigue machine. Fatigue fracture surfaces of specimens that in the high cycle fatigue tests were also observed using a scanning electron microscope for revealing the micro-mechanisms of fatigue crack initiation and propagation. The results showed that fatigue limit of MB8 alloy at room temperature is 90.2 MPa under the numbers of cycle to failure Nf=107 conditions using up-and-down method calculation. The fatigue strength of the alloy is about 34% of its tensile strength. The micro-fatigue fracture surface of MB8 alloy included three representative regions. These regions are fatigue initiation area, fatigue crack propagation area and fatigue fracture area. Fatigue cracks of MB8 alloy initiate principally at surface and subsurface, and propagate along the grain boundary. The fatigue striations of fatigue crack propagation area are not clear. The fatigue fracture of test specimens show the rupture characteristics of dimple.

scholarly journals Effect of Porosity on the High Cycle Fatigue Behavior of Casing AM60B Magnesium Alloy

2011 ◽  
Vol 10 ◽  
pp. 165-170 ◽  
Author(s):  
K.S. Kim ◽  
J.C. Park ◽  
C.D. Yim ◽  
K.A. Lee
Keyword(s):  
Magnesium Alloy ◽  
High Cycle Fatigue ◽  
Fatigue Behavior ◽  
Cycle Fatigue
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