کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7210702 | 1469218 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructure Evolution of Novel Al-Cu-Li-Ce Alloys during Homogenization
ترجمه فارسی عنوان
تکامل میکروارسازهای آلومینیوم در طول همگن سازی
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مکانیک مواد
چکیده انگلیسی
The present work is aimed to clarify the formation of the Ï1(Al8Cu4Ce) phase and its formation mechanism in the high Cu content alloys with Ce addition, i.e high Cu/Li Al-Cu-Li-Ce alloys. The microstructure evolution of the alloy during the two-step homogenization annealing process was investigated. Results show that the coarse Ag+Mg enriched TB (Al7Cu4Li) phase and the primary AlCuCe phase occur under solidification. Two types of the minor Ï1 phases are formed after homogenization. It is concluded that the Ï1 phase nucleation mechanism could involve either nucleation on an existing TB phase by Ce diffusion from the Al matrix or the transformation of the primary AlCuCe phase into the Ï1 phase by Ce diffusion through the coarse primary AlCuCe phase shrink. It is deduced that the grain refinement is attributed to the primary AlCuCe, which can promote α (Al) nucleation and further prohibit the grain growth for the experimental alloy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Rare Metal Materials and Engineering - Volume 45, Issue 7, July 2016, Pages 1687-1694
Journal: Rare Metal Materials and Engineering - Volume 45, Issue 7, July 2016, Pages 1687-1694
نویسندگان
Yu Xinxiang, Yin Dengfeng, Yu Zhiming, Zhang Yiran, Li Shufei,