발간논문

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Vol.32, No.7, 765 ~ 771, 1994
Title
The Low - Cycle Fatigue Properties of Weldable Al - Zn - Mg - Mn Alloy and Al 7039 in various environments
조한서Han Seo Cho, 남수우Soo Woo Nam
Abstract
The strain controlled low-cycle fatigue properties of recently developed weldable Al-Zn-Mg-Mn alloy and commercial Al 7039 alloy were studied in air, distilled water and 3.5wt.% NaCl solution. While the tensile strength of the Al-Zn-Mg-Mn is greater than that of 7039 alloy, the fatigue life of the Al-Zn-Mg-Mn alloy is found comparable to those of the Al 7039 alloy at the condition of the same total strain range in all the environments tested. However, the fatigue life of the Al-Zn-Mg-Mn alloy is appears longer than that of the Al 7039 in terms of the dissipated energy per cycle in the specimen. These results are considered to be caused by the difference in cyclic deformation behavior between the weldable Al-Zn-Mg-Mn alloy and Al 7039 alloy.
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