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1Effect of equal-channel angular pressing on pitting corrosion resistance of anodized aluminum-copper alloy显示文摘The effect of equal-channel angular pressing(ECAP) on the pitting corrosion resistance of anodized Al-Cu alloy was investigated by electrochemical techniques in a solution containing 0.2 mol/L AlCl3 and also by surface analysis.Anodizing was conducted for 20 min at 200 and 400 A/m2 in a solution containing 1.53 mol/L H2SO4 and 0.018 5 mol/L Al2(SO4)3·16H2O at 20 ℃.Anodized Al-Cu alloy was immediately dipped in boiling water for 20 min to seal the micro pores present in anodic oxide films.The time required before initiating pitting corrosion of anodized Al-Cu alloy is longer with ECAP than without,indicating that ECAP process improves the pitting corrosion resistance of anodized Al-Cu alloy.Second phase precipitates such as Si,Al-Cu-Mg and Al-Cu-Si-Fe-Mn intermetallic compounds are present in Al-Cu alloy and the size of these precipitates is greatly decreased by application of ECAP.Al-Cu-Mg intermetallic compounds are dissolved during anodization,whereas the precipitates composed of Si and Al-Cu-Si-Fe-Mn remain in anodic oxide films due to their more noble corrosion potential than Al.FE-SEM and EPMA observation reveal that the pitting corrosion of anodized Al-Cu alloy occurs preferentially around Al-Cu-Si-Fe-Mn intermetallic compounds,since the anodic oxide films are absent at the boundary between the normal oxide films and these impurity precipitates.The improvement of pitting corrosion resistance of anodized Al-Cu alloy processed by ECAP appears to be attributed to a decrease in the size of precipitates,which act as origins of pitting corrosion.In-Joon SON Hiroaki NAKANO Satoshi OUE Shigeo KOBAYASHI Hisaaki FUKUSHIMA Zenji HORITA 2009中国有色金属学会会刊:英文版2009,19,4:5
2Improving the mechanical properties of magnesium and a magnesium alloy through severe plastic deformation显示文摘Akihiro Yamashita Zenji Horita Terence G Langdon 2001Materials Science and Engineering2001,300,:2
3Improving the mechanical properties of magnesium and a magnesium alloy through severe plastic deformation显示文摘Akihiro Y Zenji H Terence G 2001Materials Science and Engineering A2001,,300:1
4Microstructures and microhardness of an aluminum alloy and pure copper after processing by high-pressure torsion显示文摘Zenji Horita Terence G Langdon 2005Materials Science and Engineering2005,,:1
5Principle of equal-channel angular pressing for the processing of ultra-Fine grained materials显示文摘Yoshinori Iwahashi Jingtao Wang Zenji Horita 1996Scripta Materialia1996,35,2:1
6Impmng the mechanical properties of magnesium and a magnesium alloy through severe plastic deformation显示文摘Akihiro Yamashita Zenji Horita Imngdon T G 2001Materials Science and Engineering2001,300,:1
7Microstructural characteristics of ultrafine-grained aluminum produced using equal-channel angular pressing显示文摘Yoshinori Iwahashi Minoru Furukawa Zenji Horita Minoru Nemoto Terence G. Langdon 1998Metallurgical and Materials Transactions A1998,,9:1
8Influence of rolling on the superplastic behavior of an Al-MgSc alloy after ECAP显示文摘Hiroki Akamatsu Takayoshi Fujinami Zenji Horita 2001Scripta Materialia2001,44,:1
9Achieving superplasticity in a Cu-40%Zn alloy through severe plastic deformation显示文摘Koji Neishi Zenji Horita Terence G 2001Scripta Materialla2001,45,:1
10The Potential for Scaling ECAP:Effect of Sample Size on Grain Refinement and Mechanical Properties 显示文摘Zenji Horita Takayoshi Fajinami Langdon T G 2001Materials Science and Engineering2001,,318:1
11Microstructural characteristics of ultrafine-grained aluminum produced using equal-channel angular pressing显示文摘Yoshinori Iwahashi Minoru Furukawa Zenji Horita Minoru Nemoto Terence G. Langdon 1998Metallurgical and Materials Transactions A1998,,9:1
12A new constitutive rela-tionship for the homogeneous deformation of metals over a wide range of strain显示文摘NGUYEN Q C GYZH ZENJI H 2004Acta Materialia2004,52,:1
13Optimizing the rotation conditions for grain refinement in equal-channel angular pressing显示文摘Keiichiro Oh-Ishi Zenji Horita Minoru Nemoto Minoru Furukawa Terence G. Langdon 1998Metallurgical and Materials Transactions A1998,,7:1
14Equal-channel angular pressing of commercial aluminum alloys: Grain refinement, thermal stability and tensile properties显示文摘Zenji Horita Takayoshi Fujinami Minoru Nemoto Terence G. Langdon 2000Metallurgical and Materials Transactions A2000,,3:1
15Advanced Glycation Endproduct-Induced Calcium Handling Impairment in Mouse Cardiac Myocytes显示文摘Ralica Petrova Yasuhiko Yamamoto Katsuhiko Muraki Hideto Yonekura Shigeru Sakurai Takuo Watanabe Hui Li Masayoshi Takeuchi Zenji Makita Ichiro Kato Shin Takasawa Hiroshi Okamoto Yuji Imaizumi Hiroshi Yamamoto 2002Journal of Molecular and Cellular Cardiology2002,,10:1
16Improving the mechanical properties of magnesium and a magnesium alloy though severe plastic deformation 显示文摘Akihiro Y Zenji H Terence G L 2001Materials Science and Engineering2001,300,:1
17Developing Superplasticity in a Magnesium Alloy Through a Combination of Extrusion and ECAP 显示文摘Yuichi Miyahara Kiyoshi Matsubara Koji Neishi Zenji Horita and T G Langdon 2003Magnesium Alloys 20032003,551,:1
18Characteristics of diffusion in Al±Mg alloys with ultrafine grain sizes显示文摘Takeshi Fujita Zenji Horita 2002Phil-osophical Magazine2002,82,11:1
19Cold con- solidation of ball-milled titanium powders 显示文摘Kaveh Dealati Zenji Horita Hiroshi Fujiwara 2010Metallurgical And Materials Transactions A2010,41,:1
20Plastic deformation and allotropic phase transformations in zirconia ceramics during high-pressure torsion显示文摘Kaveh Edalati Shoichi Toh Yoshifumi Ikoma Zenji Horita 2011Scripta Materialia2011,,11:1
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