Experimental Investigation on Ground Surface Morphology of Particulate Reinforced Titanium Matrix Composites

2013 ◽  
Vol 765-767 ◽  
pp. 3196-3199
Author(s):  
Qing Miao ◽  
Wen Feng Ding ◽  
Jiu Hua Xu ◽  
Biao Zhao ◽  
Jian He
Keyword(s):  
Wear Debris ◽  
Matrix Material ◽  
Ground Surface ◽  
Fracture Pattern ◽  
Matrix Composites ◽  
Titanium Matrix ◽  
Surface Fracture ◽  
Abrasive Wheel ◽  
Titanium Matrix Composites ◽  
Particulate Reinforced

Particulate reinforced titanium matrix composites (PTMCs) are attracting increasingly attention in various engineering applications. In this paper, comparative grinding experiments of PTMCs were carried out using WA abrasive wheel and CBN abrasive wheel. The morphology of the ground surface was observed by scanning electron microscope. The main results are summarized as follows: (1) The damage of reinforcements in the PTMCs results from the plowing and shearing during grinding in the form of crater, micron gap, broken, coating and micron crack. (2) The formation of grinding chip is a function of the collaborate removal of reinforcements and matrix material. (3) The surface fracture pattern of PTMCs using WA wheel is to form the grinding chip through severe extrusion. While using CBN wheel, the abrasion due to the formation of the wear debris is the main surface fracture pattern of PTMCs.

Microstructure and friction/wear behavior of (TiB+TiC) particulate-reinforced titanium matrix composites

Wear ◽  
2014 ◽  
Vol 318 (1-2) ◽  
pp. 68-77 ◽  
Author(s):  
Bong-Jae Choi ◽  
IL-Young Kim ◽  
Young-Ze Lee ◽  
Young-Jig Kim
Keyword(s):  
Wear Behavior ◽  
Matrix Composites ◽  
Titanium Matrix ◽  
Titanium Matrix Composites ◽  
Particulate Reinforced

Study on Mechanical Alloying of TiB2 Particulate Reinforced Titanium Matrix Composites

2018 ◽  
Vol 875 ◽  
pp. 41-46 ◽  
Author(s):  
Yue Ying Li ◽  
Fu Wen Zhu ◽  
Zhen Liang Qiao
Keyword(s):  
Mechanical Alloying ◽  
Milling Time ◽  
Volume Fraction ◽  
Matrix Composites ◽  
Titanium Matrix ◽  
Titanium Matrix Composites ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Powder Particles ◽  
Particulate Reinforced

TiB2 particulate reinforced titanium matrix composites were prepared by mechanical alloying and spark plasma sintering. Volume fraction of TiB2 powders in the composites are 5%, 10%, 15%. The effect of milling time and the volume fraction of reinforcement on microstructure and properties of the composites were studied. The results show that with increasing milling time, the size of powder particles decreases, quantity of them increases, and microstructure of the sintered samples becomes finer and more uniform. When milling time reaches 30h, the trend of powder agglomeration increases, the downward trend of the particle size becomes slowly. With the milling time, the density of titanium matrix composites is on the rise. The density of 10vol%TiB2 particulate reinforced titanium matrix composites can reach 4.799 g/cm3, with 30h milling time and sintering at 900°C. The density and hardness of the composites increase with increasing the volume fraction of TiB2. When the volume fraction of TiB2 is 15%, after milling 10h and sintered at 800°C, the density and hardness of the composites can reach 4.713g/cm3 and HV851.58.

Mechanical and Microstructural Properties of Titanium Matrix Composites Reinforced by TiN Particles

2007 ◽  
Vol 534-536 ◽  
pp. 825-828 ◽  
Author(s):  
F. Romero ◽  
Vicente Amigó ◽  
M.D. Salvador ◽  
E. Martinez
Keyword(s):  
Mechanical Properties ◽  
Microstructural Development ◽  
Matrix Composites ◽  
Microstructural Properties ◽  
Titanium Matrix ◽  
Titanium Matrix Composites ◽  
Tension Tests ◽  
Different Temperatures ◽  
Mechanical And Microstructural Properties ◽  
Particulate Reinforced

Particulate reinforced titanium composites were produced by PM route. Different volumetric percentages of TiN reinforcements were used, 5,10,15 vol%. Samples were uniaxially pressed and vacuum sintered at different temperatures between 1200-1300°C. Density, porosity, shrinkage, mechanical properties and microstructure were studied. Elastic properties and strength resistance were analysed by flexural strength and tension tests, and after the test, fractured samples were analysed as well to obtain the correlation between the fracture, interparticular or intraparticular, and the level of reinforcement addition. Hardness and microhardness test were done to obtain a better understanding of its mechanical properties. In order to study wear resistance pinon- disc tests were conducted. In addition, the influence of temperature, the reactivity between matrix and reinforcement on microstructural development were observed by optical and electron microscopy.

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