Fatigue crack propagation of magnesium alloy in biaxial stress fields

2005 ◽  
Author(s):  
Yasumi Itoh ◽  
Akira Shimamoto
Keyword(s):  
Fatigue Crack ◽  
Magnesium Alloy ◽  
Crack Propagation ◽  
Fatigue Crack Propagation ◽  
Biaxial Stress ◽  
Stress Fields

Fatigue Crack Propagation of Magnesium Alloy and Aluminum Alloy in Biaxial Stress Fields

2006 ◽  
Vol 321-323 ◽  
pp. 599-602 ◽  
Author(s):  
Yasumi Ito ◽  
Akira Shimamoto
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Crack ◽  
Magnesium Alloy ◽  
Crack Propagation ◽  
Fatigue Crack Propagation ◽  
Biaxial Stress ◽  
Singular Stress ◽  
Remarkable Effect ◽  
Magnesium Alloy Az31b ◽  
Stress Cycling

In this research, fatigue crack propagation tests of magnesium alloy AZ31B and aluminum alloy 2024T3 were conducted under conditions of biaxial and uniaxial loading by using a cruciform specimen in a biaxial fatigue machine, in order to investigate the effect of non-singular stress cycling. From these comprehensive experiments, in the magnesium alloy, the remarkable effect was found in the specific biaxial load stress ratio RB (= σx 0/σy 0) on KI-da/dN relation. On the other hand, in the aluminum alloy, it was confirmed that there is no influence of a RB on KI-da/dN relation.

Effects of Biaxial Stress Condition for Fatigue Properties of Magnesium Alloy

2005 ◽  
Vol 488-489 ◽  
pp. 859-864 ◽  
Author(s):  
Yasumi Ito ◽  
Akira Shimamoto
Keyword(s):  
Fatigue Crack ◽  
Magnesium Alloy ◽  
Crack Propagation ◽  
Fatigue Crack Propagation ◽  
Propagation Velocity ◽  
Biaxial Stress ◽  
Fatigue Properties ◽  
Remarkable Effect ◽  
Crack Propagation Velocity ◽  
Growth Properties

Fatigue crack propagation tests of magnesium alloy were conducted under conditions of biaxial and uniaxial loading by using a cruciform specimen with the biaxial fatigue tester. The purpose of this study is to investigate the effect of biaxial stress on the fatigue crack growth properties ⊿KⅠ-da/dN. From these comprehensive experiments, the remarkable effect was found in the specific biaxiality ratio σx 0/σy 0 on the ⊿KⅠ-da/dN relationship. When biaxiality ratio was 0.5, it turned out that the fatigue crack propagation velocity of a magnesium alloy becomes very slow. In other biaxiality ratios, fatigue crack propagation velocity was influenced in some extent. Fatigue crack propagation velocity decreases a little as the stress which acts in parallel with a crack increases.

Environmental effect of fatigue crack propagation of magnesium alloy

1997 ◽  
Vol 234-236 ◽  
pp. 220-222 ◽  
Author(s):  
Yasuo Kobayashi ◽  
Toshinori Shibusawa ◽  
Keisuke Ishikawa
Keyword(s):  
Fatigue Crack ◽  
Magnesium Alloy ◽  
Crack Propagation ◽  
Fatigue Crack Propagation ◽  
Environmental Effect
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