The Fabrication of Titanium Aluminide Matrix Composite Sheet by Rolling and Reaction Annealing

2010 ◽  
Vol 654-656 ◽  
pp. 404-407 ◽  
Author(s):  
Lin Geng ◽  
H.L. Wang ◽  
Y.B. Song ◽  
Jie Zhang
Keyword(s):  
Matrix Composite ◽  
Titanium Aluminide ◽  
Pure Titanium ◽  
Composite Sheet ◽  
Al Composite ◽  
Tic Particle ◽  
Reaction Annealing ◽  
Deformation Compatibility ◽  
Selection Of

In this work, Ti5Si3 and TiC particle reinforced titanium aluminide matrix composite sheet was fabricated by rolling and reaction annealing using the starting materials of SiCp/Al composite and pure titanium sheet. The deformation compatibility of both starting materials and microstructure evolution during reaction synthesis were studied. The results show that titanium has the similar deformability with SiCp/Al composite via the introduction of SiC particles and the selection of proper rolling temperature. Titanium aluminide matrix composite reinforced by Ti5Si3 and TiC was synthesized by reactions during the annealing. The reactions include the formation of titanium aluminide matrix by the diffusion synthesis between titanium and aluminum, as well as reinforcements (Ti5Si3 and TiC) by in-situ reaction between SiC and titanium.

Investigation on TiCP/Al Composite Coating by TIG Cladding

2014 ◽  
Vol 490-491 ◽  
pp. 29-33 ◽  
Author(s):  
Wen Bo Tang ◽  
Cong Hui Lu ◽  
Yan Peng Li
Keyword(s):  
Wear Resistance ◽  
Composite Coating ◽  
Testing Machine ◽  
Wear Testing ◽  
Alloy Surface ◽  
Al Composite ◽  
The Matrix ◽  
Tic Particle

TiCp/Al composites coating was in-situ synthesized on the L1060 alloy surface by TIG cladding. The microstructure and the phase of the coating were analyzed by OM, SEM, ADS and XRD, and the properties was been tested by micro-hardnessmeter and wear testing machine. The results show that the composite coating has no porosity, inclusions and other defects. The microstructure of the composite coating mainly consists of TiC particle and aluminum. Microstructural evidence suggests that the formation of TiC occur not only by reaction between Ti dissolved in Al and Al4C3, but also by reaction between C dissolved in Al and Al3Ti. The hardness of the composite coating obtained by TIG cladding is up to 120HV0.2. The wear resistance of composite coating is 1.6 times more than that of the matrix.

Study on In situ Synthesis of TiC Particle Reinforced Iron Matrix Composite

2011 ◽  
Vol 20 (8) ◽  
pp. 1447-1450 ◽  
Author(s):  
Qihong Cen ◽  
Yehua Jiang ◽  
Rong Zhou ◽  
Yunhua Xu ◽  
Jianbin Wang
Keyword(s):  
Matrix Composite ◽  
In Situ Synthesis ◽  
Iron Matrix ◽  
Tic Particle

Microstructures and Properties of Ti Matrix Composite Coatings with Ex/In Situ TiC Reinforced

2012 ◽  
Vol 522 ◽  
pp. 183-186
Author(s):  
Qing Yu ◽  
Yao Ning Sun ◽  
Wen Lei Sun ◽  
Xu Dong Zhang
Keyword(s):  
Matrix Composite ◽  
Laser Cladding ◽  
Deleterious Effect ◽  
Composite Coatings ◽  
Pure Titanium ◽  
Micro Hardness ◽  
Maximum Value ◽  
Coarse Microstructure ◽  
Ti Powder

Using laser cladding technique, TiC reinforced Ti matrix composite coatings were fabricated by preplacing TiC, (Ti+C), (Ti+TiC) powders respectively on the TA2 pure titanium surface.By means of XRD, SEM and Hv-Test, microstructures and microhardness were investigated. The results show that phases of the coatings are all composed of TiC and α-Ti. Delamination phenomenon appears when laser clad pure TiC coating, which has deleterious effect on properties. TiC phase is in-situ synthesized during laser clad (Ti+C) coating, but microstructure is coarse. Microstructure of (Ti+TiC) coating is the most uniform and dense of the three coatings. The microhardness sequence of the three coatings is (Ti+TiC)>TiC>(Ti+C), and the maximum value is Hv1246, Hv1213 and Hv1135 respectively. The main reason leads to the highest micro-hardness of (Ti+TiC) coating is the Ti powder is beneficial to laser cladding and large amount of TiC reinforcement formed which is compact and uniform.

Synthesis In Situ Composite TiAl-Based with Particulate Al2O3 Reinforcement by Powder Metallurgy Route

2013 ◽  
Vol 858 ◽  
pp. 159-163
Author(s):  
Tran Duc Huy ◽  
Nguyen Hong Hai ◽  
Keiichi N. Ishihihara
Keyword(s):  
High Temperature ◽  
Titanium Aluminide ◽  
Matrix Material ◽  
High Temperature Strength ◽  
Market Place ◽  
In Situ Techniques ◽  
Specific Strength ◽  
Reaction Characteristic ◽  
Selection Of

A major effort has been made over last 20 or so years to introduce TiAl-based alloys into the market-place as engineering component. Recently, titanium aluminide based composites are competitive candidate for aerospace use due to the favorable properties of matrix material, such as low density, high specific strength and relative good properties at elevate temperature [1-4]. The amount of aluminum in titanium alloys exceeds that used in conventional alloys and can range from 10 to 48at%. This concentration of aluminum allows the formation of anin-situalumina reinforcement which is responsible for the excellent oxidation, sulfidation and carburization resistance at temperatures of 1000°C and higher. However, their brittleness and rapid crack growth rate at low to intermediate temperature hinders their application/3/. Nevertheless, nanostructure of monolithic TiAl is unstable at elevate temperatures which deteriorate the high temperature properties. In order to improve the high temperature strength of intermetallic, ceramic particles can be utilized as reinforcements [4, 5]. Recently, in-situ techniques have been utilized to fabricate TiAl-Al2O3composite through displacement reaction between TiO2and Al in planetary ball milling and subsequence heat treatment. The knowledge of reaction characteristic in the Al-TiO2system is great importance to optimize the processing/4, 6/. The chemical compatibility with the iron aluminide matrix at temperature above 1000°C is an important factor for the selection of reinforcements because extreme interfacial reaction during processing results in the degradation of mechanical properties [3, 4].

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