SA-08-1(024) Time dependent flow behavior of pure aluminum and aluminum-magnesium alloy under a constant stress condition(Flaw Progress & Failure Mechanism 1)
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概要
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We carried out creep tests for pure aluminum and aluminum-magnesium alloy ( A5083 ) under a condition of constant stress. The creep tests were performed until the final rupture of the specimens. The strain was measured by a laser extensometer with the resolution of 50μm. We observed the large difference of the pre-primary stage between the pure aluminum and the alloy. The inverse primary creep was recognized for alloy alone. The region with the extremely low strain rate extends increasing in the temperature and decreasing in the applied stress. The large plastic strain was observed for both materials and the flow behavior was analyzed with the visco-elastic models. The models were capable to bring the information of the flow properties of the materials. The viscosity coefficients suggest there is a difference in the microstructures constructed in the materials crept and in the mobility of the dislocations.
- 一般社団法人日本機械学会の論文
- 2001-06-03
著者
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Umezawa Osamu
National Institute For Materials Science
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Ishikawa Keisuke
Toyo University Department Of Mechanical Engineering
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ISHIKAWA Fumitoshi
Toyo University, Department of Mechanical Engineering
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KOBAYASHI Yasuo
Toyo University, Department of Mechanical Engineering
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Maehara Masataka
Toyo University, Department of Mechanical Engineering
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Maehara Masataka
Toyo University Department Of Mechanical Engineering
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Ishikawa Fumitoshi
Toyo University Department Of Mechanical Engineering
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Umezawa Osamu
National Research Institute For Metals
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Kobayashi Yasuo
Toyo University Department Of Mechanical Engineering
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