Compatibility of Fe–40Al with various fibers

1990 ◽  
Vol 5 (9) ◽  
pp. 1976-1984 ◽  
Author(s):  
S. L. Draper ◽  
D. J. Gaydosh ◽  
M. V. Nathal ◽  
A. K. Misra
Keyword(s):  
Mechanical Properties ◽  
Reaction Rates ◽  
Matrix Composites ◽  
Matrix Interface ◽  
Intermetallic Matrix ◽  
Heat Treated ◽  
Fiber Matrix Interface ◽  
Intermetallic Matrix Composites ◽  
Thickness Measurements ◽  
Composite Samples

Chemical reaction can occur at the fiber/matrix interface of intermetallic matrix composites, leading to a degradation of mechanical properties. Fe–40Al matrix composites were fabricated using SiC, B, W, Mo-base, and Al2O3 fibers. Composite samples were heat treated up to 1500 K to study the reaction kinetics, and reaction rates were determined from reaction zone thickness measurements. The Al2O3 and W fibers were found to be compatible with the Fe–40Al matrix, while the Mo-based fibers reacted moderately and the B and SiC fibers reacted severely. Experimental results are compared to theoretical thermodynamic predictions.

Determination of Fiber/Matrix Interface Mechanical Properties in Brittle-Matrix Composites

1990 ◽  
Vol 194 ◽  
Author(s):  
Ronald J. Kerans ◽  
Paul D. Jero ◽  
Triplicane A. Parthasarathy ◽  
Amit Chatterjee
Keyword(s):  
Mechanical Properties ◽  
Ceramic Composites ◽  
Interface Properties ◽  
Matrix Composites ◽  
Matrix Interface ◽  
Intermetallic Matrix ◽  
Fiber Matrix Interface ◽  
Fiber Matrix ◽  
Intermetallic Matrix Composites

AbstractIt has been evident for some time that the mechanical properties of the fiber/matrix interface play an important role in determining the mechanical behavior of ceramic composites (for reviews, see [1], [2], and [3[). Recently there has been a growing interest in the role of the fiber/matrix interface in intermetallic matrix composites. While ceramic and intermetallic composites are certainly very different materials, understanding the behavior of one will provide insight into the other. Furthermore, the basic issues regarding the determination of interface properties are the same. The accuracy of micromechanics models of any composite system is dependent upon the accuracy of all the constituent and interface properties. It is far preferable to measure actual materials constants rather than test-specific quantities. The tests described here are intended to measure the interfacial shear strength (or mode II toughness) and the interfacial tensile strength. The objective of this work is to briefly outline a few of the approaches which are being evaluated for and applied to ceramic composites, and which may be of interest to investigators working in intermetallic composites.

Tensile Properties of Epoxy Composites Reinforced with Continuous Sisal Fibers

2014 ◽  
Vol 775-776 ◽  
pp. 284-289 ◽  
Author(s):  
Sergio Neves Monteiro ◽  
Frederico Muylaert Margem ◽  
Wellington Pereira Inácio ◽  
Artur Camposo Pereira ◽  
Michel Picanço Oliveira
Keyword(s):  
Mechanical Properties ◽  
Tensile Properties ◽  
Epoxy Matrix ◽  
Room Temperature ◽  
Fracture Analysis ◽  
Epoxy Composites ◽  
Matrix Composites ◽  
Matrix Interface ◽  
Fiber Matrix Interface ◽  
Sisal Fibers

The tensile properties of DGEBA/TETA epoxy matrix composites reinforced with different amounts of sisal fibers were evaluated. Composites reinforce with up to 30% in volume of long, continuous and aligned sisal fibers were room temperature tested in an Instron machine. The fracture was analyzed by SEM. The results showed significant changes in the mechanical properties with the amount of sisal fibers. These mechanical properties were compared with other bend-tested composites results. The fracture analysis revealed a weak fiber/matrix interface, which could be responsible for the performance of some properties.

Carbon nanotube-reinforced intermetallic matrix composites: processing challenges, consolidation, and mechanical properties

2019 ◽  
Vol 104 (9-12) ◽  
pp. 3803-3820 ◽  
Author(s):  
Olusoji Oluremi Ayodele ◽  
Mary Ajimegoh Awotunde ◽  
Mxolisi Brendon Shongwe ◽  
Adewale Oladapo Adegbenjo ◽  
Bukola Joseph Babalola ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotube ◽  
Matrix Composites ◽  
Intermetallic Matrix ◽  
Composites Processing ◽  
Intermetallic Matrix Composites

scholarly journals Preparation and Mechanical Properties of Fe3Al-MWNTs Composites

2008 ◽  
Vol 17 (4) ◽  
pp. 096369350801700
Author(s):  
Laixue Pang ◽  
Jinsheng Zhang ◽  
Jing Xu
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Multiwall Carbon Nanotubes ◽  
High Yield ◽  
Matrix Composites ◽  
Intermetallic Matrix ◽  
First Results ◽  
Intermetallic Matrix Composites ◽  
Hot Pressing Sintering ◽  
Sintering Method

Multiwall carbon nanotubes (MWNT) reinforced iron aluminides (Fe3Al) intermetallic matrix composites have been prepared by a conventional (hot pressing) sintering method. Morphological, structural, compositional and mechanical properties investigations have been performed. Compressive testing shows that the composites still display high yield strength. The first results show that carbon nanotubes have been preserved in composite structure during the sintering process.

Evaluation of Mechanical Properties and Comprehensive Modeling of CMC with Stiff and Weak Matrices

2006 ◽  
Vol 45 ◽  
pp. 1435-1443 ◽  
Author(s):  
Dietmar Koch ◽  
Kamen Tushtev ◽  
Jürgen Horvath ◽  
Ralf Knoche ◽  
Georg Grathwohl
Keyword(s):  
Mechanical Properties ◽  
Mechanical Response ◽  
Ceramic Matrix Composites ◽  
High Strength ◽  
Shear Mode ◽  
Matrix Composites ◽  
Matrix Interface ◽  
Strain Behavior ◽  
Fiber Matrix Interface ◽  
Fiber Matrix

The mechanical properties of ceramic matrix composites (CMC) depend on the individual properties of fibers and matrix, the fiber-matrix interface, the microstructure and the orientation of the fibers. The fiber-matrix interface of ceramics with stiff matrices (e.g. CVI-derived SiC/SiC) must be weak enough to allow crack deflection and debonding in order to achieve excellent strength and strain to failure (weak interface composites WIC). This micromechanical behavior has been intensively investigated during the last 20 years. With the development of CMC with weak matrices (weak matrix composites WMC) as e.g. oxide/oxide composites or polymer derived CMC the mechanical response can not be explained anymore by these models as other microstructural mechanisms occur. If the fibers are oriented in loading direction in a tensile test the WMC behave almost linear elastic up to failure and show a high strength. Under shear mode or if the fibers are oriented off axis a significant quasiplastic stress-strain behavior occurs with high strain to failure and low strength. This complex mechanical behavior of WMC will be explained using a finite element (FE) approach. The micromechanical as well as the FE models will be validated and attributed to the different manufacturing routes.

Processing and Properties of Intermetallic Matrix Composites

1990 ◽  
Vol 213 ◽  
Author(s):  
D.E. Alman ◽  
N.S. Stoloff
Keyword(s):  
Mechanical Properties ◽  
Injection Molding ◽  
Matrix Composites ◽  
Intermetallic Matrix ◽  
Processing Variables ◽  
Processing Effects ◽  
Intermetallic Matrix Composites ◽  
Selection Of

ABSTRACTThis paper is concerned with the processing and mechanical properties of intermetallic-matrix composites. The effects of processing variables on fabrication of compounds including Ni3Al, NiAl, TiTaAl2, MoSi2 and their composites is described. A key concern is with processing effects on microstructure, selection of compatible ceramic reinforcing phases, and whisker alignment through injection molding.

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