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Iranian Journal of Materials Science and Engineering، جلد ۱۱، شماره ۱، صفحات ۲۷-۳۸
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چکیده فارسی مقاله
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عنوان انگلیسی DISLOCATIONS STRUCTURE AND SCATTERING PHENOMENON IN CRYSTALLINE CELL SIZE OF 2024 AL ALLOY DEFORMED BY ONE PASS OF ECAP AT ROOM TEMPERATURE
چکیده انگلیسی مقاله Variation in microstructural features of 2024 aluminum alloy plastically deformed by equal channel angular pressing (ECAP) at room temperature, was investigated by X-Ray diffraction in this work. These include dislocation density dislocation characteristic and the cell size of crystalline domains. Dislocations contrast factor was calculated using elastic constants of the alloy such as C 11, C 22 and C 44 . The effect of dislocations contrast factor on the anisotropic strain broadening of diffraction profiles was considered for measuring the microstructural features on the base of the modified Williamson-Hall and Warren-Averbach methods. Results showed that the dislocations density of the solution annealed sample increased from 4.28×10 12m-2 to 2.41×10 14m-2 after one pass of cold ECAP and the fraction of edge dislocations in the solution annealed sample increased from 43% to 74% after deformation. This means that deformation changed the overall dislocations characteristic more to edge dislocations. Also the crystalline cell size of the solution annealed sample decreased from 0.83μm to about 210nm after one pass of ECAP process at room temperature
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نویسندگان مقاله m h گودرزی | m h goodarzy
school of metallurgy and materials engineering, iran university of science amp;amp; technology, tehran, iran.


h عربی | h arabi
center of excellence for high strength alloys technology cehsat , school of metallurgy and materials engineering, iran university of science and technology, tehran, iran.

سازمان اصلی تایید شده: دانشگاه علم و صنعت ایران (Iran university of science and technology)

سیدمحمد علی بوترابی | m a boutorabi
center of excellence for high strength alloys technology cehsat , school of metallurgy and materials engineering, iran university of science and technology, tehran, iran.

سازمان اصلی تایید شده: دانشگاه علم و صنعت ایران (Iran university of science and technology)

s h سیدین | s h seyedein
department of mechanical engineering, azad university saveh branch, iran.


h شاهرخی | h shahrokhi


نشانی اینترنتی http://ijmse.iust.ac.ir/browse.php?a_code=A-10-127-43&slc_lang=en&sid=en
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زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده گروه مهندسی مواد . مباحث ویژه
نوع مقاله منتشر شده Research paper
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