کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1578949 1001217 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Al–Mg–Cu based alloys and pure Al processed by high pressure torsion: The influence of alloying additions on strengthening
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Al–Mg–Cu based alloys and pure Al processed by high pressure torsion: The influence of alloying additions on strengthening
چکیده انگلیسی

The influence of alloying additions on strengthening of high pressure torsion (HPT) processed alloys was investigated using commercially pure Al (Al-1050 alloy) and five Al–(1–3)Mg–(0–4)Cu alloys (in wt%). Microhardness was measured on cross-sections. For Al-1050 the microhardness reaches a peak at an effective strain of about three and subsequently decreases. The microhardness of Al–Mg–Cu alloys increases strongly and continuously with increasing equivalent strain. This workhardening rate is enhanced by increasing Mg content over the entire range of strain. Furthermore, the workhardening rates were higher in Cu-free and low Cu-containing (≤0.4%) Al–Mg alloys as compared to high Cu-containing Al–Mg alloy at strains less than three. The results indicate that dislocation–solute and dislocation–cluster interactions play an important role in strengthening.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 527, Issue 15, 15 June 2010, Pages 3472–3479
نویسندگان
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