کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5468241 | 1518925 | 2017 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evolution of interfacial microstructures and mechanical properties of Cf/AZ91 composite during heat treatment
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Evolution of interfacial microstructures and mechanical properties of Cf/AZ91 composite during heat treatment Evolution of interfacial microstructures and mechanical properties of Cf/AZ91 composite during heat treatment](/preview/png/5468241.png)
چکیده انگلیسی
Cf/AZ91 composite was fabricated by liquid-solid extrusion following vacuum pressure infiltration technique (LSEVI). There were some inevitable shortcomings, such as interfacial mismatch stress, in spite of the advantages of LSEVI. Heat treatment was conducted to modify the composite. It was confirmed that the interface and mechanical properties of the Cf/AZ91 composite could be modified by heat treatment. The number of interfacial precipitates Mg17Al12 decreased and the size of the granular precipitates was reduced from about 500Â nm to about 200Â nm due to recovery. Nanocrystalline ceramic particles MgO with disordered intergranular films and dislocations, resulting from unusual deformation mechanisms and interfacial stress, were observed at the interface. The tensile strength of 2D-Cf/AZ91 composite increased from 400Â MPa to 420Â MPa after heat treatment. The strengthening of the composite after heat treatment was attributed to recovery, relief of interfacial stress and nano-sized MgO interfacial layer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vacuum - Volume 145, November 2017, Pages 245-250
Journal: Vacuum - Volume 145, November 2017, Pages 245-250
نویسندگان
Shaolin Li, Lehua Qi, Ting Zhang, Jiming Zhou, Hejun Li,