Cryogenic mechanical behavior of 5000- and 6000-series aluminum alloys: Issues on application to offshore plants |
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| Affiliation: | 1. Department of Naval Architecture and Ocean Engineering, Pusan National University, 30, Jangjeon-Dong, Geumjeong-Gu, Busan 609-735, Republic of Korea;2. Department of Extreme Energy Systems, Korea Institute of Machinery and Materials, Daejeon 305-343, Republic of Korea;1. Department of Materials Science and Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway;2. Center for Advanced Materials, Qatar University, Doha, Qatar;3. College of Materials Science and Engineering, Chongqing University, 400044, China;1. State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China;2. School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China;3. Light Alloy Research Institute, Central South University, Changsha 410083, China;4. School of Materials Science and Engineering, Central South University, Changsha 410083, China;1. LKR Leichtmetallkompetenzzentrum Ranshofen GmbH, Austrian Institute of Technology, Postfach 26, 5282 Ranshofen, Austria;2. BENTELER Automobiltechnik GmbH, An der Talle 27-31, 33102 Paderborn, Germany;3. Voestalpine Polynorm GmbH & Co. KG, Polynormstraße 1, 73529 Schwäbisch Gmünd, Germany;4. Aerospace & Advanced Composites GmbH, Viktor-Kaplan-Strasse 2, 2700 Wiener Neustadt, Austria |
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| Abstract: | The mechanical behavior of aluminum alloys was investigated in terms of four aspects: temperature, strain rate, material type, and fracture shape. The candidate materials were 5000- and 6000-series alloys. The material characteristics were investigated and summarized as a function of low temperature (110–293 K) and quasi-static strain rate (10?4 and 10?2 s?1). The results confirmed that the strength and ductility of aluminum alloys improved with a decrease in the temperature. The aluminum alloys showed a strain rate effect only in terms of the ductility of the 5000-series alloys. In addition, fractography analyses were performed on the fracture specimens to explain the material behavior at cryogenic temperatures. |
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| Keywords: | Aluminum alloy Cryogenic mechanical test Fracture Strain rate sensitivity Scanning electron microscopy (SEM) |
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