On the role of texture in governing fatigue crack propagation behavior of 2524 aluminum alloy

2016 ◽  
Vol 669 ◽  
pp. 367-378 ◽  
Author(s):  
Fudong Li ◽  
Zhiyi Liu ◽  
Wenting Wu ◽  
Peng Xia ◽  
Puyou Ying ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Crack ◽  
Crack Propagation ◽  
Fatigue Crack Propagation ◽  
Fatigue Crack Propagation Behavior ◽  
Propagation Behavior ◽  
Crack Propagation Behavior

scholarly journals Fatigue Crack Propagation Behavior of Nickel-Foam Reinforced Aluminum Alloy.

1992 ◽  
Vol 41 (461) ◽  
pp. 246-252
Author(s):  
Kazuaki SHIOZAWA ◽  
Seiichi NISHINO ◽  
Takashi MIZUGUCHI ◽  
Ryuuichi YOSHIKAWA ◽  
Tatsuya YAGUCHI
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Crack ◽  
Crack Propagation ◽  
Fatigue Crack Propagation ◽  
Nickel Foam ◽  
Fatigue Crack Propagation Behavior ◽  
Propagation Behavior ◽  
Crack Propagation Behavior

Three-Dimensional Characterization of Fatigue Crack Propagation Behavior in an Aluminum Alloy Using High Resolution X-Ray Microtomography

2010 ◽  
Vol 638-642 ◽  
pp. 378-383 ◽  
Author(s):  
Hui Zhang ◽  
Peng Cheng Qu ◽  
Yuuji Sakaguchi ◽  
Hiroyuki Toda ◽  
Masakazu Kobayashi ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Crack ◽  
Crack Propagation ◽  
Crack Growth ◽  
Fatigue Crack Propagation ◽  
Three Dimensional ◽  
X Ray ◽  
Fatigue Crack Propagation Behavior ◽  
Propagation Behavior ◽  
Crack Propagation Behavior

Synchrotron X-ray microtomography was used to investigate the three-dimensional fatigue crack propagation behavior of an aluminum alloy. Local crack growth rates along specimen thickness were calculated. Crack observation revealed that crack propagation was retarded in three regions where there exist overlapping crack segments. Crack growth retardation was found to occur in these crack overlapping regions due to stress shielding. Observation of crack propagation process indicated that one of the overlapping crack segments initiated from the twisted crack. Crack tip opening displacement was measured and it was found that crack opening was larger in single planar crack region than that in crack overlapping region.

The Role of Intermetallic Phases in Fatigue Crack Propagation Behavior of Al-Zn-Mg-Cu Alloys

2007 ◽  
Vol 555 ◽  
pp. 553-558 ◽  
Author(s):  
M. Vratnica ◽  
Z. Cvijović ◽  
K. Gerić ◽  
Zijah Burzić
Keyword(s):  
Growth Rate ◽  
Fatigue Crack ◽  
Crack Propagation ◽  
Fatigue Crack Propagation ◽  
Volume Fraction ◽  
Fatigue Crack Propagation Behavior ◽  
Propagation Behavior ◽  
Cu Alloys ◽  
Crack Propagation Behavior

The aim of the present work is to determine the role of intermetallic (IM) phases in the fatigue crack propagation behavior of hot-forged Al-Zn-Mg-Cu alloys in T73 condition. To generate differences in the volume fraction and coarseness of various IM particles, the (Fe+Si) impurity level is varied from 0.23 to 0.37 mass%. The fatigue crack propagation tests are conducted in air at ambient temperature and a stress ratio R of 0.1. Characterization of the fatigue fracture surfaces is performed using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). Quantified IM particles data for each alloy are then related to the fatigue properties and fractographic analysis results. It was found that almost all particles of the Fecontaining phases (primarily (Cu,Fe,Mn)Al3 and Al7Cu2Fe) are broken and not effective in hindering fatigue crack propagation. On the other hand, the Mg2Si and soluble phase particles smaller than those of the Fe-containing phases contribute beneficially to fatigue life. These particles increase the tortuosity of the crack path and retard the crack growth rate. The crack growth rate decreases as the volume fraction of coarse Fe-containing particles increases, because more secondary cracks are produced decreasing the effective stress intensity at the main crack tip.

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