ICONE11-36161 ROLL BONDING STEPS OF 6061 ALUMINUM ALLOY PLATES DURING HOT ROLLING OF NUCLEAR FUEL PLATES
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概要
- 論文の詳細を見る
Roll Bonding process is applied to clad the core plate (U_<3O>_8 + aluminum), with high strength aluminum alloys during fabrication of plate type nuclear fuel elements for research reactors, and to produce many new constructions which have special uses in industrial applications. In the present work, the steps of the hot roll bonding process of 6061 aluminum alloy plates during hot rolling of nuclear fuel plates were studied using both microscopic examination and mechanical testing. The results indicate that, in the hot rolling process, a mechanical bond between the plates first forms after breakage of the oxide layer formed in the surface treatment step. Then, a strong metallurgical bond develops at the bond interface of the 6061 aluminum plates during reheating step between hot rolling passes and during the blister test and annealing step. It was found that, there is a threshold of reduction in thickness, at which the metallic bond initiates. After this point, the increasing of reduction degree leads to increase in the bond strength. This reduction threshold was found to be 30%. The final bond strength was about 0.87 from the strength of base 6061 aluminum alloy at the same conditions of hot working and thermal treatments. The present results showed that at least 81% reduction in thickness is required to produce the required bond between the cladding and both the core plate and the aluminum frame for roll bonded plates with the standard roll bonding method.
- 一般社団法人日本機械学会の論文
著者
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Ibrahim Mohammad
Metallurgy Department Faculty Of Engineering Cairo University
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Elseaidy Ibrahim
Nuclear Research Center Atomic Energy Authority
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Ghoneim Mohammad
Nuclear Research Center, Atomic Energy Authority
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Ghoneim Mohammad
Nuclear Research Center Atomic Energy Authority