Metal based functionally graded materials : engineering and by Jerzy Sobczak; Ludmil Drenchev

By Jerzy Sobczak; Ludmil Drenchev

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Extra resources for Metal based functionally graded materials : engineering and modeling

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0 Vol. %. 0 s, ROP=2265 1g/m3. 00 s Next Baok Baok Exit Exit Date: 04:Jan:01 Time: 10:01:17 c) Fig. B7. volume percentage, % Next PROCESS PARAMETERS Matrix C0030 Particles. 00 s OMEGA=30 rps. TOC=1200. deg. 0 Vol. %. 0 s, ROP=2265 1g/m3. TDie=400, deg Date: 04:Jan:01 Time: 10:01:17 d) Centrifugally cast composite C90300/graphite system with graded area in the particle rich zone: a) cross section of the real casting; b), c) and d) particle distribution obtained by numerical simulation at times t = 10 s, t = 30 s and t = 50 s (final distribution), respectively.

20 Vol % SiC Vol. % SiC 15 10 5 0 0 50 100 150 200 250 300 20 18 16 14 12 10 8 6 4 2 0 0 100 200 300 400 time, s time, s 30 30 25 25 20 20 15 10 5 15 10 5 0 0 0 100 200 300 400 500 0 time, s Fig. A9. Dynamics of SiC volume fraction Fig. A10. at H = 92 mm. % percentage of particles 120 90 H, mm 600 Fig. A8. Dynamics of SiC volume fraction at H = 73 mm. % Vol. % SiC Vol % SiC Fig. A7. Dynamics of SiC volume fraction at H = 92 mm. % 500 60 30 0 0 500 1000 1500 400 600 time, s 800 1000 Dynamics of SiC volume fraction at H = 66 mm.

A comprehensive mathematical model based on equations for both particle movement and solidification in rotating slurry, which would be capable of describing macrostructure formation in centrifugal casting of particle reinforced MMCs will be presented and short discussion on its application to the manufacture of graded structures will be analyzed. 1. Theoretical Analysis Centrifugal casting of particlereinforced MMCs involves the solidification of a suspension of liquid metal and solid particles in a horizontally or vertically rotating mold.

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