کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7971613 | 1514610 | 2018 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Compression properties enhancement of Al-Cu alloy solidified under a 29â¯T high static magnetic field
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Bulk solidification of Al-40â¯wt% Cu hypereutectic alloy has been investigated using a high static magnetic field (HSMF). The results show that, by imposing a 29â¯T HSMF, the melt convection has been completely suppressed in the mushy zone and the whole scale. The primary Al2Cu faceted phase changed to non-faceted phase because of the growth enhancement of Al2Cu precipitates. Al-Al2Cu eutectic was destabilized as a coexisting of lamellar and rod-like α-Al phase under 0â¯T whereas it was stabilized as a lamellae under the 29â¯T HSMF. The dimension of primary Al2Cu precipitates has been refined. The interlamellar spacing of eutectic Al-Al2Cu structure has been reduced from 6.3â¯Âµm to 2-3â¯Âµm. The primary Al2Cu precipitates were almost oriented to its <â¯001â¯>â¯crystal direction which was parallel to the direction of the vertical HSMF. The morphologies of shrinkages displays as approximately regular spheres. Compressive strength of Al-40â¯wt% Cu alloy has been enhanced from 248â¯MPa to 431â¯MPa and the maximum stain has been improved from 3.6% to 5%. This paper reveals the effect of HSMF on Al2Cu precipitates, provides a new sight about refinement theory and new pathway to fabricate brittle materials with excellent mechanical properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 733, 22 August 2018, Pages 170-178
Journal: Materials Science and Engineering: A - Volume 733, 22 August 2018, Pages 170-178
نویسندگان
Tianxiang Zheng, Bangfei Zhou, Jiang Wang, Sansan Shuai, Yunbo Zhong, Weili Ren, Zhongming Ren, Francois Debray, Eric Beaugnon,