کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1576691 | 1514784 | 2013 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dynamic recrystallization and recovery during high-pressure torsion: Experimental evidence by torque measurement using ring specimens
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Dynamic recrystallization and recovery during high-pressure torsion: Experimental evidence by torque measurement using ring specimens Dynamic recrystallization and recovery during high-pressure torsion: Experimental evidence by torque measurement using ring specimens](/preview/png/1576691.png)
چکیده انگلیسی
Several pure metals exhibit softening when imparting large strains at room temperature. This study investigates the nature of this strain softening. Torque measurements during high-pressure torsion using ring specimens, which appear to be more suitable than disk specimens for the evaluation of the strain response on the in situ flow stress, suggest that the softening in aluminum occurs mainly by dynamic recrystallization and recovery, whereas no appreciable dynamic softening occurs in copper. The softening in aluminum is associated with decreasing the dislocation density and increasing the grain size and missorientation angles, whereas copper exhibits ultrafine grains of higher dislocation density and few nanotwins. A significant static recrystallization is detected in HPT-processed pure copper by argon irradiation during ion milling.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 559, 1 January 2013, Pages 506-509
Journal: Materials Science and Engineering: A - Volume 559, 1 January 2013, Pages 506-509
نویسندگان
Kaveh Edalati, Zenji Horita, Tadahiko Furuta, Shigeru Kuramoto,