Analysis of Microstructure and Mechanical Properties Changes in AA1050 Aluminum Subjected to ECAP and KoBo Processes / Analiza Zmian Mikrostruktury I Własności Mechanicznych Aluminium AA1050 Po Procesie ECAP I KoBo

Archives of Metallurgy and Materials

P. Ostachowski¹  K. Sulikowska²  R. Bogucki²  K. Sztwiertnia³  M. Bieda³ 

[1] AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland;Cracow University of Technology, Institute of Materials Science, ul. Jana Paw?a II 37, 31-864 Krakow, Poland;Institute of Metallurgy and Materials Science Polish Academy of Sciences, 25 Reymonta str., 30-059 Krakow, Poland

关键词: Keywords: SPD;    aluminium;    ECAP;    KoBo;    microstructure;    mechanical properties;   

DOI  :  10.1515/amm-2015-0489

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

Analysis of the results of the microstructure and the mechanical properties change in AA1050 aluminum alloy of technical purity processed using ECAP (Equal Channel Angular Pressing) and KoBo deformation methods are presented in the paper.. ECAP process was performed according to Bc scheme in the range from 1 up to 10 passes. Changes of microstructure were analyzed using scanning electrone microscope equipped with electron backscattered diffraction (EBSD) system. Microstructure and fraction of high-angle grain boundaries in KoBo processed samples were similar to those observed in ECAP processed samples after four passes. The most significant microstructure refinement was observed in ECAP processed sample submitted to 10 passes. In ECAP method the systematic increase of mechanical properties was observed along with increase of deformation degree.

【 授权许可】

Unknown