期刊
MATERIALS
卷 9, 期 2, 页码 -出版社
MDPI
DOI: 10.3390/ma9020115
关键词
syntactic foams; metal foams; metal matrix composites; high strain rate; strain rate sensitivity; split-Hopkinson pressure bar
类别
资金
- German-Egypt Research Fund [EGY 08/008]
- US-Egypt grant through National Science Foundation [IIA-1445686]
- Office Of The Director
- Office Of Internatl Science &Engineering [1445686] Funding Source: National Science Foundation
The present study investigates the mechanical performance of syntactic foams produced by means of the metal powder injection molding process having an Invar (FeNi36) matrix and including cenospheres as hollow particles at weight fractions (wt.%) of 5 and 10, respectively, corresponding to approximately 41.6 and 60.0 vol.% in relation to the metal content and at 0.6 g/cm(3) hollow particle density. The synthesis process results in survival of cenospheres and provides low density syntactic foams. The microstructure of the materials is investigated as well as the mechanical performance under quasi-static and high strain rate compressive loads. The compressive stress-strain curves of syntactic foams reveal a continuous strain hardening behavior in the plastic region, followed by a densification region. The results reveal a strain rate sensitivity in cenosphere-based Invar matrix syntactic foams. Differences in properties between cenosphere- and glass microsphere-based materials are discussed in relation to the findings of microstructural investigations. Cenospheres present a viable choice as filler material in iron-based syntactic foams due to their higher thermal stability compared to glass microspheres.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据