کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7969480 | 1514351 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effects of Cr particles addition on the aging behavior and mechanical properties of SiCp/7075Al composites
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The effects of Cr particles addition on the aging behavior and mechanical properties of SiCp/7075Al composites were systematically investigated. The results show that the precipitation sequence of (5 vol% Cr + 50 vol% SiC)/7075Al composites (C-7075Al) is still: GP zone â ηâ²Â â η (MgZn2), but Cr particles degrade the precipitation kinetics of the C-7075Al composite in comparison to (5 vol% SiCp + 50 vol% SiCp)/7075Al (B-7075Al) because of reduced dislocation density present in the matrix and higher thermal activation energy of the ηⲠphase. Besides, the addition of Cr particles has a significant effect on the mechanical properties of the C-7075Al composite during the aging process. In contrast to the as-cast state, the ultimate tensile strength of the C-7075Al composite obtains an increase of 120 MPa at the peak-aged period, significantly lower than those of 7075Al alloy (207 MPa) and the B-7075Al composite (151 MPa), which is attributable to the severe aggregation of elemental Mg at the interface between Cr particles and the Al matrix.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 136, February 2018, Pages 264-271
Journal: Materials Characterization - Volume 136, February 2018, Pages 264-271
نویسندگان
Tiwen Lu, Weiping Chen, Weiye Xu, Pei Wang, Mengdi Mao, Yixiong Liu, Zhiqiang Fu,