کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1576298 | 1514773 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mechanistic aspects of impact initiated reactions in explosively consolidated metal+aluminum powder mixtures
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The mechanisms influencing impact initiation of reactions in structural energetic materials formed by explosive compaction of pure Ni, Ta, or W powders mixed with Al powder are investigated in this work. High speed images of rod-on-anvil impact tests indicate that the energy requirements for initiating reaction in Ta+Al compacts are lower than those in W+Al, while no reaction at all is observed in Ni+Al under the tested conditions. Mesoscale simulations performed on actual microstructures reveal differences in the deformation behavior of the Ni+Al, Ta+Al, and W+Al compacts under similar impact conditions. In the Ni+Al and W+Al systems, the impact induced deformation is localized primarily in the Al constituent, while significant plastic deformation of both constituents is observed in Ta+Al, making it a more reactive system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 570, 15 May 2013, Pages 164-171
Journal: Materials Science and Engineering: A - Volume 570, 15 May 2013, Pages 164-171
نویسندگان
B.B. Aydelotte, N.N. Thadhani,