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Comparative Fatigue Study of Age Hardening Al-alloys Under Residual Stress Effects

1IS2M Laboratory, Mechanical Engineering, University of Tlemcen, Tlemcen, Algeria

2Physics Department, University of Tlemcen, Tlemcen, Algeria

3LMSR Laboratory, Department of Mechanical Engineering, University of Sidi Bel Abbes

American Journal of Materials Science and Engineering. 2014, 2(1), 7-12
DOI: 10.12691/ajmse-2-1-2
Copyright © 2014 Science and Education Publishing

Cite this paper:
M. Benachour, N. Benachour, M. Benguediab. Comparative Fatigue Study of Age Hardening Al-alloys Under Residual Stress Effects. American Journal of Materials Science and Engineering. 2014; 2(1):7-12. doi: 10.12691/ajmse-2-1-2.

Correspondence to: M.  Benachour, IS2M Laboratory, Mechanical Engineering, University of Tlemcen, Tlemcen, Algeria. Email:


In this study, applied tensile plastic preload in 2024 and 7075 Al-alloys plates with central hole generate residual stress field. Around the central hole compressive residual stress was generated when finite element method was used and Von Mises criterion was applied for plastic preload. The level of compressive residual stress increase in increasing of applied plastic preload. Fatigue life and fatigue crack growth rate (FCGR) depend on the level of plastic preload. Consequently fatigue life increase and FCGR decrease. No high effect of level of applied plastic preload was shown for 7075 Al-alloy on fatigue behavior.



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Influence of Hydrocarbon Radicals on the Structure of Layered Double Hydroxides

1Azov Sea State Technical University, Mariupol, Ukraine

2SASOL Germany GmbH

American Journal of Materials Science and Engineering. 2014, 2(1), 1-6
DOI: 10.12691/ajmse-2-1-1
Copyright © 2014 Science and Education Publishing

Cite this paper:
Butenko E., Malyshev A., Kapustin A.. Influence of Hydrocarbon Radicals on the Structure of Layered Double Hydroxides. American Journal of Materials Science and Engineering. 2014; 2(1):1-6. doi: 10.12691/ajmse-2-1-1.

Correspondence to: Butenko  E., Azov Sea State Technical University, Mariupol, Ukraine. Email:


Mg-Al-LDHs with different Mg/Al mol ratio were studied. Adsorption of different organic substances on the layered double hydroxides (LDHs) of different composition was studied. Fatty alcohols, phenols and naphthalene derivatives were used as a sorbates. The structure changes, taking place because of this process, was explored by X-ray method. It has been found, that at the adsorption of such substances as alcohol and phenols the anion exchange take place. After the sorption the specific surface and inner distance of LDHs were measured. The mechanism of structure change was proposed.



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