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matrix composites
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  matrix composites
Elastic characteristics of an interfacial layer formed by polymeric matrix composites
      
Poisson's ratios for interfacial layers of polymer matrix composites
      
Mechanical properties of interface layers in polymer matrix composites for large elastic deformations
      
The effect of the concentration of the dispersed elastic filler on the lower yield stress of matrix composites based on plastic polymers is studied.
      
The effect of the concentration of the dispersed elastic filler on the lower yield stress of matrix composites based on plastic polymers is studied.
      
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he microstructure of alumina Particulates (Al2O3P) and silicons carbide particulates (SiCp) reinforced pure aluminium matrix composites was observed and analyzed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that the addition of ceramic particulate to matrix can increase ultimate tensile strength (b) and 0.2% offset yield strength of materials,but decrease elongation. The strengthening of the particulate reinforced composites can not be explained...

he microstructure of alumina Particulates (Al2O3P) and silicons carbide particulates (SiCp) reinforced pure aluminium matrix composites was observed and analyzed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that the addition of ceramic particulate to matrix can increase ultimate tensile strength (b) and 0.2% offset yield strength of materials,but decrease elongation. The strengthening of the particulate reinforced composites can not be explained only by Orowan theory as not only dislocation but also dislocation cell substructure has strengthening effect.In general,the strength of the composite can be expressed as:c=f ( m'P'dp, Vp' Φ,ψ,I),and in this study, following equation can be given by fitting test data:

利用SEM,TEM技术对Al_2O_3p,SiC_p增强纯铝基复合材料进行了组织观察和分析,认为陶瓷颗粒的加入使材料的σ_b,σ_(0.2)提高了,但延伸率有所下降;指出颗粒强化的位错机制不能用单一的Orowan机制来解释,还应考虑位错胞状亚结构的影响,并认为强度σ_c=f(m,P,dp,Vp,Φ,,I)经拟合得出本研究条件下的

he flexcural properties of single-phase γ--TiAl alloys and γ- TiAl intermetallics compound matrix composites toughened by ductile fiber have been studied by three-point bending test. X-ray diffraction, optical and scanning electron microscopies, togethter with transmission electron microscopy were employed to examine the phases of them. The composites Ti/ TiAl interface reaction production-flexural property relation has been analyzed. The results show that the transverse-rupture strength(TRS) of...

he flexcural properties of single-phase γ--TiAl alloys and γ- TiAl intermetallics compound matrix composites toughened by ductile fiber have been studied by three-point bending test. X-ray diffraction, optical and scanning electron microscopies, togethter with transmission electron microscopy were employed to examine the phases of them. The composites Ti/ TiAl interface reaction production-flexural property relation has been analyzed. The results show that the transverse-rupture strength(TRS) of composites Ti/ TiAl has been increased by a factor of 22.5%, The plastic deflection (Dp) of Ti/ TiAl is about the same compared with γ- TiAl. There are reaction production of intermetallic compound Ti3Al,Ti2Al in the interface of composites Ti / TiAl, so the plastic deflection (Dp) hasn't increased distinctly.

用三点弯曲法研究了金属间化合物γ-TiAl和用塑性Ti纤维韧化的Ti/TiAl复合材料的弯曲性能;利用X射线衍射仪,光学显微镜、扫描电镜研究了它们的相组成,并分析了Ti/TiAl复合材料弯曲性能和界面相之间的关系。结果表明:Ti/TiAl复合材料的弯曲强度提高了22.5%,挠度提高不明显,有明显韧化的效果。复合材料中Ti3Al、Ti2Al等金属间化合物相析出,是它塑性没有明显优化的原因。

AbstractThis paper provides an overview of fatigue bahavior and fatigue mechanisms in nontransforming ceramic materials,stich as silicon carbide,silicon nitride and so on. Finally,some opinions and suggestions on the further development of fatigue in ceramic matrix composites (CMC) are presented.

对SiC、Si3N4等非相交增韧陶瓷的疲劳行为和疲劳机理进行了综述。并且对进一步研究陶瓷基复合材料的疲劳提出了一些看法和建议。

 
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