کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5458819 | 1516167 | 2017 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Aging behavior and tensile response of a SiCw reinforced eutectoid zinc-aluminium-copper alloy matrix composite
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Aging behavior and tensile response of a SiCw reinforced eutectoid zinc-aluminium-copper alloy matrix composite Aging behavior and tensile response of a SiCw reinforced eutectoid zinc-aluminium-copper alloy matrix composite](/preview/png/5458819.png)
چکیده انگلیسی
A SiC whisker-reinforced eutectoid zinc-aluminum-copper alloy matrix composite (SiCw/ZAC) was fabricated via a vacuum pressure infiltration technique and investigated comprehensively by comparison with the unreinforced ZAC alloy. The microstructure of the composite was composed of SiC whiskers, Al3Cu5Zn phases and eutectoids of α (Al-rich solid solution) and η (Zn-rich solid solution) with an amount of Al3Cu5Zn phase 1.5 times that in the ZAC alloy. The density and coefficient of thermal expansion of the composite were 4.81 g/cm3 and 21.45 ppm/K, respectively, lower than those of the ZAC alloy. Compared with the ZAC alloy, the composite had a lower peak aging temperature but a much higher peak aging hardness. The addition of SiCw dramatically increased the strength and elastic modulus of the ZAC alloy but greatly decreased the ductility. The ZAC alloy was ductile and fractured in the mode of microvoid coalescence. In contrast, the SiCw/ZAC composite was brittle. In addition to SiC whiskers, brittle Al3Cu5Zn phases were also the nucleation sites of microcracks and hence also responsible for the much lower ductility of the composite.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 727, 15 December 2017, Pages 375-381
Journal: Journal of Alloys and Compounds - Volume 727, 15 December 2017, Pages 375-381
نویسندگان
Wenlong Zhang, Xiang Ma, Dongyan Ding,