کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7973755 | 1514630 | 2018 | 17 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Strengthening of mechanically alloyed Al-based alloy with high Zr contents
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Al-Cu-Mn matrix alloy in the form of chips with zirconium in amounts of 5, 10 and 20Â wt% was subjected to mechanical alloying. After milling in a ball mill for 20Â h the prepared powders were annealed and hot-pressed. X-ray diffraction analysis was used to study the effect of zirconium content on the phase composition and microstructural parameters of the materials. The study showed that mechanical alloying leads to the formation of an Al-based nanocrystalline supersaturated solid solution with a zirconium content of up to 20%. With an increase in the zirconium concentration the microhardness of the powder alloys increases to 440 HV. The subsequent precipitation hardening as a result from the precipitation of metastable Al3Zr (L12) phase with a maximum content of 28Â vol% causes an increase in the microhardness to 520 HV. The hot-pressed specimens exhibit very good room temperature and high temperature strength which increases with zirconium content.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 713, 24 January 2018, Pages 174-179
Journal: Materials Science and Engineering: A - Volume 713, 24 January 2018, Pages 174-179
نویسندگان
A.S. Prosviryakov, K.D. Shcherbachev,