کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1582097 1514869 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of grain refinement on mechanical properties of ball-milled bulk aluminum
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Effect of grain refinement on mechanical properties of ball-milled bulk aluminum
چکیده انگلیسی

In this study, high quality bulk ultra-fine grained and nanocrystalline pure aluminum samples were prepared through room temperature ball milling, cold and warm compaction, sintering, and annealing processes. The as-received (−325 mesh) powder was subjected to different milling times in order to achieve specimens with different average grain sizes (d). The prepared samples were then subjected to uniaxial compressive loading to large strains (∼45%) to investigate the effect of grain size on the stress–strain response of the material. The 10-h milled bulk nanocrystalline samples (d = 82 nm) were tested at a very wide range of strain rates from quasi-static to dynamic regimes. The strain rate sensitivity of the material increased as the grain size was reduced to nanometer realm; the flow stress, and work hardening behavior were dramatically influenced by change in the grain size (milling time).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 489, Issues 1–2, 20 August 2008, Pages 77–84
نویسندگان
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