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 Wysłany: ¦ro 15:10, 12 Sty 2011 Temat postu: air jordans Die TiC AlSiCuMg Preparation and prop |
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Die TiC / AlSiCuMg Preparation and properties of composite materials
No. 30 College Road, Beijing City (100083), Tel :0113 -62332508 Received: 200t one by one 05 trial data are the average of three tests. Kinds of casting and non-ferrous Taijin 4atic 2001 b The morphology of particles selected electron diffraction spots Purchase thatch calibration results of Figure 2TiC/AISi9Cul4L (TiCj = 4% J TEM composite casting MSigCu1.4MgO.5 Taijin as Table 1 and (nc】 = 4% of the Recovering the temperature mechanical properties of different materials can be seen from Table 1. Die w (TiC) = 4% tensile strength multiple units for the 354MPa, than the matrix alloy increased 26%; 260 ℃ tensile strength of the composites 272MPa. than the matrix alloy increased 46%, the elongation of composites and matrix alloy considerable. TiC particle reinforced endogenous A1Si9Cul, 4M.5 composites between strength and grain size increment The relationship between Holl-Peexh be described. Hol1Pecth between alloy strength increment described the relationship between grain size and the formula 【J △ YM ≈ D1 / 2 ≈ kd (b -). / 6 (1) r where , △ YM for the alloy strength increment. k, and a number of factors are relevant factors, D is the grain size, d is the particle size increased. to enhance the volume fraction of particles in the alloy melt A1Si9Cu1.4Mg0.5 Health and a certain amount of TiC particles can significantly refine the matrix grains (ie, reduce the D value), which alloy strength can be improved. 260 ℃ when the tensile strength is much higher than the matrix alloy due to dispersed in the matrix in TiC particles played a \thermal stability. From (1) we can, reducing the particle size increase will help improve the strength of composite materials. Figure 3 shows that the automatic image analyzer AISi9Cu1.4M5 endogenous molten alloy particles 600 TiC derived from statistical analysis of particle size distribution can be seen from Figure 3, in AISi9CuI4mgo.5 Taijin endogenous melt a considerable portion of TiC particle size of less than 1, they produce Oro ~ ma strengthened. improve the alloy strength from the type (I) can also be seen to enhance the volume fraction of reinforcing particles, help to improve the strength, but tests Taijin found,air jordans, with increased endogenous TiC particles,ugg stivali, melt viscosity increases by a big margin. Nien increase the potential degree of pan will cause the melt flow rate of decline. not conducive to the casting process TiC/A1Si9Cu1.4Mgo.5 composites elongation of composite materials to keep cap near the substrate because the TiC particles generated in situ matrix near the interface with a good spherical particles (see Figure 2a). particles more uniform distribution of internal stress is clear, nearly spherical TiC particles on the plastic to keep material very beneficial and a good sharp plus particulate reinforced metal matrix composites,moncler daunenjacke, due to sharp particles residual stress distribution is very uneven. When was the applied load, the load passes through the interface between composite particles, easy to make sharp corners of the residual stress concentration at the fracture of particles significantly reduced the formation of hollow plastic composite materials' belly l4l2l. 8 good s payment of child care training 42 laps 3AiSi9CuI4MgO5 endogenous body size distribution of TiC particles 3 Conclusion die w (TiC) = 4% of the composite tensile strength is 354blPa,stivali ugg, than the matrix alloy by 26%; 260 when the composite material The tensile strength of 272MPa,ugg milano, than the matrix alloy increased by 46%. elongation of the composite alloy with AISi9Cul4Mg0.5 considerable. show that the die-casting (TiC) = 4% of the AISi9Cu1.4Mg05 composite materials can meet the rotation-side electric car motors Structural requirements cover the use of Yang Bin References 1. Soil front. Cui Hua such a stir on the cast in situ reaction / A 【and TiC / AI re-sets the impact of material microstructure Emirates observe Materials .1999.19 (4 ) :16-2 【2 two Sea. Soil l SUI. aluminum baking sheets and other key body in situ TiC particles in the reaction mechanism of rare materials and on the way .1997, .26 (6j: 12 ~ 17 +3 CirceTWWithe ~ PJA Ⅱ Intmducti ~ mtoMe ~ alMari ~ Comp ~ ~ i.tesUK: Cambri the eUnive ~ ilyPss.1993 (Editor: Liu Wei
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