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Engineering Materials Vol II (microstructures processing design) 2nd ed - M Ashby D Jones (1999) WW Part 3 ppsx

Engineering Materials Vol II (microstructures_ processing_ design) 2nd ed. - M. Ashby_ D. Jones (1999) WW Part 3 ppsx

Engineering Materials Vol II (microstructures_ processing_ design) 2nd ed. - M. Ashby_ D. Jones (1999) WW Part 3 ppsx

... about 0.6 mm min−1. At 30 °C the speed is2 .3 mm min−1. And the maximum growth speed, of 3. 7 mm min−1, is obtained at aninterface temperature of 24°C (see Fig. 6 .3) . At still lower temperatures ... good example to begin with is solidification – most metals are melted or solidi ed during manufacture, and we have already looked at two case studies involving solidi-fication (zone refining, and ... behaviour.6 .3 Samples cut from a length of work-hardened mild steel bar were annealed forvarious times at three different temperatures. The samples were then cooled toroom temperature and tested for...
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Engineering Materials Vol II (microstructures_ processing_ design) 2nd ed. - M. Ashby_ D. Jones (1999) WW Part 8 ppsx

Engineering Materials Vol II (microstructures_ processing_ design) 2nd ed. - M. Ashby_ D. Jones (1999) WW Part 8 ppsx

... defect in the small volume subjected to the higheststresses is small.18 .3 Modulus-of-rupture tests were done on samples of ceramic with dimensionsl = 100 mm, b = d = 10 mm. The median value of ... metal such as molybdenum (usually applied as a powder and then heated).200 Engineering Materials 2Fig. 19.9. Forming methods for glass: pressing, rolling, float-moulding and blow-moulding.rate ... indent the ceramic with a diamond and measure thehardness.This enormous hardness is exploited in grinding wheels which are made from smallparticles of a high-performance engineering ceramic...
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Engineering Materials Vol II (microstructures_ processing_ design) 2nd ed. - M. Ashby_ D. Jones (1999) WW Part 9 ppsx

Engineering Materials Vol II (microstructures_ processing_ design) 2nd ed. - M. Ashby_ D. Jones (1999) WW Part 9 ppsx

... necessitates adifferent design approach (Chapter 27).Most polymers are made from oil; the technology needed to make them from coal isstill poorly developed. But one should not assume that dependence ... this chapterwe examine three cement pastes: the primitive pozzolana; the widespread Portlandcement; and the newer, and somewhat discredited, high-alumina cement. And we con-sider the properties ... P(DP )d( DP) is the fraction of molecules with DP values between DP and DP + d( DP). The molecular weight is just mDP where m is the molecular weight of themonomer.Most polymer properties depend...
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Engineering Materials Vol II (microstructures_ processing_ design) 2nd ed. - M. Ashby_ D. Jones (1999) WW Part 12 ppsx

Engineering Materials Vol II (microstructures_ processing_ design) 2nd ed. - M. Ashby_ D. Jones (1999) WW Part 12 ppsx

... more demanding struc-tural applications, have design methods evolved.In designing with ductile materials, a safety-factor approach is used. Metals can beused under static loads within a small ... pin of a pin-jointed frame, made ofmetal, fits poorly, then the metal deforms locally, and the pin beds down, redistribut-ing the load. But if the pin and frame are made of a brittle material, ... 1982. D. W. Richardson, Modern Ceramic Engineering, Marcel Dekker, 1982. (d) PolymersDuPont Design Handbooks, DuPont de Nemours and Co., Polymer Products Department,Wilmington, Delaware 19898, USA,...
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Engineering Materials Vol II (microstructures_ processing_ design) 2nd ed. - M. Ashby_ D. Jones (1999) WW Part 14 ppsx

Engineering Materials Vol II (microstructures_ processing_ design) 2nd ed. - M. Ashby_ D. Jones (1999) WW Part 14 ppsx

... solid.(c) Lead-rich solid only. (d) Liquid only.2.6 (a) Liquid plus lead-rich solid between 1 and 2.(b) Lead-rich solid between 2 and 3. (c) Lead-rich solid plus tin-rich solid below 3 (see ... abranched shape called a dendrite. Many alloys show primary dendrites (Fig. A1 .34 ); andthe eutectic, if it forms, fills in the gaps between the branches. 36 0 Engineering Materials 2PeritectoidsDEF. ... lead–tin system it is the point XPb = 26.1 wt%, T = 1 83 C.Most alloy systems are more complicated than the lead–tin system, and show inter-mediate phases: compounds which form between components,...
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Engineering Materials Vol II (microstructures processing design) 2nd ed. - M. Ashby_ D. Jones (1999) Episode 2 potx

Engineering Materials Vol II (microstructures processing design) 2nd ed. - M. Ashby_ D. Jones (1999) Episode 2 potx

... worked or heat-treated intofinished products; and by understanding these, shape and size can, to a large extent,be predicted.Background reading M. F. Ashby and D. R. H. Jones, Engineering Materials ... removed impurity from the left-hand end of the bar and dumped it at the right-hand end; that is, we have zone refined the left-hand part of the bar.Because we need to know how long the refined section ... 2nd edition, Butterworth-Heinemann,1996.Further reading D. A. Porter and K. E. Easterling, Phase Transformations in Metals and Alloys, 2nd edition, Chapmanand Hall, 1992.G. A. Chadwick, Metallography...
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Engineering Materials Vol II (microstructures processing design) 2nd ed. - M. Ashby_ D. Jones (1999) Episode 4 pps

Engineering Materials Vol II (microstructures processing design) 2nd ed. - M. Ashby_ D. Jones (1999) Episode 4 pps

... (wt%)sy(MPa)Slowly cooled Quenched and aged2000 Al + 4 Cu + Mg, Si, Mn 130 4656000 Al + 0.5 Mg 0.5 Si 85 2107000 Al + 6 Zn + Mg, Cu, Mn 30 0 570Work hardeningCommercially pure aluminium (1000 ... equilibrium temperature. If, instead of using undersaturatedammonium chloride solution, we pour saturated solution into the mould, we get whatis called “big-bang” nucleation. As the freshly poured ... transformation in iron: the volume of martensite produced is afunction of temperature only, and does not depend on time. Note that the temperature at which martensitestarts to form is labelled M s...
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Engineering Materials Vol II (microstructures processing design) 2nd ed. - M. Ashby_ D. Jones (1999) Episode 5 pps

Engineering Materials Vol II (microstructures processing design) 2nd ed. - M. Ashby_ D. Jones (1999) Episode 5 pps

... wear and tear. Untempered martensite is far too brittle for hammerheads.Having solved the immediate problem to our satisfaction we still wondered how themanufacturer had managed to harden the ... quenched and tempered state. In other words, “run-ning the temper” of a high-speed steel makes it harder, not softer; and tools made outof high-speed steel can be run at much higher cutting speeds ... bath ofmolten salt at 450°C. Finally, the heads are removed from the tempering bath andwashed in cold water. The rather complicated austenitising treatment is needed be-cause the Standard insists...
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