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Sensitivity analysis for thickness uniformity of Al coating layer in extrusion of Mg/Al clad bar

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タイトル: Sensitivity analysis for thickness uniformity of Al coating layer in extrusion of Mg/Al clad bar
著者: Tokunaga, Toko 著作を一覧する
Szeliga, Danuta 著作を一覧する
Matsuura, Kiyotaka 著作を一覧する
Ohno, Munekazu 著作を一覧する
Pietrzyk, Maciej 著作を一覧する
キーワード: Plastic deformation
Extrusion
Coating
Cladding
Corrosion resistance
発行日: 2015年 9月
出版者: Springer
誌名: International journal of advanced manufacturing technology
巻: 80
号: 1-4
開始ページ: 507
終了ページ: 513
出版社 DOI: 10.1007/s00170-015-7019-0
抄録: Although Mg alloys possess many attractive properties, the use of Mg alloys has been limited due to their extremely poor corrosion resistance. In the authors' previous study, they have developed a new process for Mg/Al cladding by hot extrusion with a convex die. In the extrusion process, it was found that the thickness uniformity of the Al coating layer can be controlled by changing the die angle. However, the optimal condition of the extrusion and the influences of extrusion parameters on the coating thickness uniformity remain unclear. In this study, therefore, the sensitivity analysis has been performed in order to evaluate the influences of extrusion parameters on the coating thickness uniformity. The sensitivities of the following five parameters were evaluated: (1) initial thickness of the coating material plate, (2) extrusion temperature, (3) ram speed, (4) die angle, and (5) ratio of simulated flow stress to the experimental one for pure Al. In order to perform the sensitivity analysis, the process for Mg/Al cladding was modeled. The results from the extrusion model fairly agree with the experimental results. Thus, it can be said that the present model of Mg/Al cladding process is reliable. From the sensitivity analysis, it was found that the initial thickness of the coating material plate and die angle influence on the uniformity most. The extrusion temperature, ram speed, and flow stress ratio do not have significant influences.
Rights: The final publication is available at Springer via http://dx.doi.org/10.1007/s00170-015-7019-0
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/62727
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 徳永 透子

 

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