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.

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.

Thermodynamic analysis of chemical compatibility of ceramic reinforcement materials with niobium aluminides

1990 ◽  
Vol 5 (7) ◽  
pp. 1561-1566 ◽  
Author(s):  
Ajay K. Misra
Keyword(s):  
Matrix Composites ◽  
Key Factors ◽  
Intermetallic Matrix ◽  
Reinforcement Material ◽  
The Matrix ◽  
Intermetallic Matrix Composites ◽  
Niobium Aluminide ◽  
Niobium Aluminides ◽  
Ceramic Reinforcement ◽  
Selection Of

Niobium aluminide-based intermetallic matrix composites are currently being considered as potential high-temperature structural materials. One of the key factors in the selection of a reinforcement material is its chemical stability in the matrix. In this study, chemical interactions between two niobium aluminides, Nb3Al and Nb2Al, and several potential ceramic reinforcement materials, which include carbides, borides, nitrides, and oxides, were analyzed from thermodynamic considerations. Several thermodynamically stable reinforcement materials have been identified for these two matrices.

Mechanical Properties of Fe3Al Intermetallic Matrix Composites

2000 ◽  
Vol 646 ◽  
Author(s):  
B.G. Park ◽  
S.H. Ko ◽  
Y.H. Park
Keyword(s):  
Mechanical Properties ◽  
Room Temperature ◽  
Low Cost ◽  
New Technology ◽  
Pulse Discharge ◽  
Surface Oxide Layer ◽  
Al Alloy ◽  
Matrix Composites ◽  
Intermetallic Matrix ◽  
Intermetallic Matrix Composites

ABSTRACTIron aluminides are of considerable interest due to their low cost, relatively high melting point, relatively low density, and excellent resistance to oxidation, sulfidation and molten salts. However, poor ductility and fracture toughness at room temperature hinder their use as a structural material. Refining of the microstructure is known to be one method to increase the room temperature ductility. Mechanical alloying (MA) is an easy way to obtain fine microstructures. In addition, pulse discharge sintering (PDS) is a new technology which suppresses grain growth during sintering because the sparks generated during sintering break the surface oxide layer of the powder particles and thus speed up the sintering process. Therefore, the combination of MA and PDS processes results in final products with very fine microstructures. Fe-28at.%Al alloy and its composite reinforced with 5vol.% of TiB2 particles were fabricated by the MA-PDS process. The mechanical properties of these materials were improved significantly as compared to conventionally processed materials.

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.

MECHANICAL PROPERTIES OF IN-SITUFeAl-TiB2 INTERMETALLIC MATRIX COMPOSITES

2009 ◽  
Vol 23 (06n07) ◽  
pp. 1479-1484 ◽  
Author(s):  
JONGHOON KIM ◽  
BONGGYU PARK ◽  
YONGHO PARK ◽  
IKMIN PARK ◽  
HEESOO LEE
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Matrix Composites ◽  
Intermetallic Matrix ◽  
Arc Melting ◽  
The Matrix ◽  
Matrix Reinforcement ◽  
Intermetallic Matrix Composites ◽  
Properties Of Composites

Intermetallic matrix composites reinforced with ceramic particles have received a great deal of attention. Iron aluminide is known to be a good material for the matrix in such composites. Two processes were used to fabricate FeAl - TiB 2 intermetallic matrix composites. One was liquid melt in-situ mixing, and the other was arc melting and suction casting processes. FeAl - TiB 2 IMCs obtained by two different methods were investigated to elucidate the influence of TiB 2 content. In both methods, the grain size in the FeAl alloy decreased with the presence of titanium diboride. The grain size of in-situ FeAl - TiB 2 IMCs became smaller than that of arc FeAl - TiB 2 IMCs. Significant increase in fracture stress and hardness was achieved in the composites. The in-situ process gives clean, contamination-free matrix/reinforcement interface which maintained good bonding causing high load bearing capability. This contributed to the increase in the mechanical properties of composites.

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