| Autor: |
Alalkawi, H. J. M., Elfaki, Elkhawad Ali, Khenyab, Ali Yousuf |
| Předmět: |
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| Zdroj: |
International Journal of Energy & Environment; 2017, Vol. 8 Issue 6, p457-464, 8p, 3 Color Photographs, 6 Charts, 3 Graphs |
| Abstrakt: |
Mechanical surface treatment like laser peening (LP), shot peening (SP) and ultrasonic peening (UP) are used to enhance the mechanical and fatigue material properties. In the current work, ultrasonic peening (UP) technique has been selected used to surface treatment of 2017A-T3 Al-alloy so as to enhance the mechanical and fatigue properties of the these alloy. Mechanical properties and constant fatigue testes has been performed at room temperature (RT) and stress ratio R= -1. Three type of UP surface treatment were done, i-e one line (1UP), two lines (2UP) and three lines (3UP) at surface test specimens. The experimental analysis of results indicated that, all the above three types of UP improved the mechanical properties i-e σu and σy by 10,3%, 30.7% increase for 1UP, 9.4%, 29.6% for 2UP and 6.6%, 27% for 3UP respectively. But the best enhancement was obtained for the (1UP).Fatigue at constant amplitude tests has also done for the above three types and compared to the unpeened one. The results showed that the (1UP) is better for fatigue life improvement; it is 160% at load 200 MPa and 180% at load 175 MPa respectively. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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