Fatigue behaviour and fracture mechanism of a rolled AZ31 magnesium alloy

Tokaji, Keiro; Kamakura, Mitsutoshi; Ishiizumi, Yuuki; Hasegawa, Naoya

doi:10.1016/j.ijfatigue.2004.03.015

Cited by 169 publications

(68 citation statements)

References 15 publications

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“…Presently, no endurance tests have been performed on the in-house alloy LA63. However, for several aluminum containing magnesium alloys, the endurance limit was below 70 MPa for 10 7 cycles [37,38]. Consequently, the superposition of both effects-fatigue and corrosion-can lead to a premature material failure.…”

Section: Summary and Discussionmentioning

confidence: 99%

Development of Magnesium Alloy Scaffolds to Support Biological Myocardial Grafts: A Finite Element Investigation

Weidling

Besdo

Schilling

et al. 2014

Biomedical Technology

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Lesioned myocardial tissue can be replaced with innovative biological grafts. However, the strength of most biological grafts is initially not sufficient for left ventricular applications. Implants that mechanically support these grafts and gradually lose their function as the graft develops its strength are a possible solution. We are developing magnesium alloy scaffolds for this purpose. The finite element method was used to perform simulations wherein scaffolds are deformed according to the heart movement. This allows us to identify highly stressed regions within the implant that need design changes. Preformed scaffolds were determined to have significantly lower stresses in comparison to flat ones. The method of tensile triangles suggests shape changes for notable stress reduction. Furthermore, new scaffold shapes were developed and simulated. Two of them are recommended for further examinations through in vitro and in vivo tests. A completely new alternative scaffold concept is also proposed.

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Section: Summary and Discussionmentioning

confidence: 99%

Development of Magnesium Alloy Scaffolds to Support Biological Myocardial Grafts: A Finite Element Investigation

Weidling

Besdo

Schilling

et al. 2014

Biomedical Technology

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“…The inapplicability of the conventional linear elastic fracture mechanics (LEFM) parameters (i.e., stress intensity factors) to characterize the growth of fatigue cracks on the order of microns in length was evidenced in wrought magnesium alloys (Tokaji et al 2004;Sajuri et al 2006). On the other hand, fatigue cracks on the order of millimeters or greater in length and larger could be satisfactorily characterized by LEFM parameters.…”

Section: Magnesium Alloysmentioning

confidence: 99%

Analysis of Lightweight Materials for the AM2 System

Allison¹,

Rushing²,

Garcia³

2014

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An analysis was performed on potential materials that could replace the 6061-T6 aluminum alloy currently used in the AM2 airfield matting for the purpose of light-weighting the design. An in-depth analysis was performed on metal and polymer matrix composites. However, neither groups of materials produced a suitable material based on operating conditions of the AM2. Newly developed extruded magnesium alloys were identified that could potentially provide weight savings of 30 to 40% while maintaining the current performance of the AM2. In addition, traditional high-strength aluminum alloys were identified that could provide substantial weight savings. However, manufacturing issues existed due to the high strength of these aluminum alloys. Finally, analysis was performed to determine the cost of manufacturing the AM2 using these alternate materials.

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“…Since that time, numerous studies have demonstrated that in-situ fatigue in the SEM device is an effective tool for the investigation of microstructural effects on the development of slip features [12,13], on crack initiation [2,5,[14][15][16][17][18][19], for the analysis of the mechanisms of crack growth [14][15][16][17]20,21], for the quantitative determination of small crack growth rates [14][15][16][17][18]22], crack tip opening displacements [16,[23][24][25], for the examination of interactions between fatigue crack growth and microstructure [15,16,[26][27][28], for the effects of vacuum, high temperature, water vapor environments, notch and pores alignment etc. [6,15,16,[29][30][31]. For example, the majority limitation of most studies were imposed by the fact that the experiments had to be conducted at room temperature (RT) in a high-vacuum, whereas most components typically operate in a gaseous environment, which can simultaneously be combined with the high-temperature conditions and after prior-corrosion magnesium alloys.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Cracking Behaviors and Influence Factors of Cast Magnesium Alloys

Wang¹

2011

Special Issues on Magnesium Alloys

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Fatigue behaviour and fracture mechanism of a rolled AZ31 magnesium alloy

Cited by 169 publications

References 15 publications

Development of Magnesium Alloy Scaffolds to Support Biological Myocardial Grafts: A Finite Element Investigation

Development of Magnesium Alloy Scaffolds to Support Biological Myocardial Grafts: A Finite Element Investigation

Analysis of Lightweight Materials for the AM2 System

Fatigue Cracking Behaviors and Influence Factors of Cast Magnesium Alloys

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