Engineering Materials Vol II (microstructures processing design) 2nd ed - M Ashby D Jones (1999) WW Part 1 pptx

... 78 12 0. 21 140 17 65 482 60 12 0 .1 0.2 20–50 15 70 460 40 12 0 .1 0.2 50 17 0 17 50 460 40 12 0 .1 0.5 50 17 0 16 80 500 12 –30 10 18 0–0 .18 6–20 14 03 0.5–0.9 > ;10 0 13 56 385 397 17 0.5 30 10 0 11 90 12 1 ... group First edition 19 86 Reprinted with corrections 19 88 Reprinted 19 89, 19 92 Second edition 19 98 Reprinted 19 99 © Michael F. Ashby and David...

Ngày tải lên: 11/08/2014, 02:22

... worked or heat-treated into finished 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 lon...

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... 60 620 18 0 0 16 0 4 13 5 9 11 5 13 11 5 26 645 18 0 0 16 0 1. 5 13 5 3.5 11 5 5 11 5 10 Estimate the time that it takes for recrystallisation to be completed at each of the three temperatures. Estimate the ... about 0.6 mm min 1 . At 30°C the speed is 2.3 mm min 1 . And the maximum growth speed, of 3.7 mm min 1 , is obtained at an interface temperature of 24°C (see Fig. 6...

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... environment. Fine-grained castings Many engineering components – from cast-iron drain covers to aluminium alloy cylin- der heads – are castings, made by pouring molten metal into a mould of the ... be watched. The casting “material” used is ammonium chloride solution, made up by heating water to 50°C and adding ammonium chloride crystals until the solution just becomes saturated. The soluti...

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... processing method could be introduced with economic benefits. Background reading M. F. Ashby and D. R. H. Jones, Engineering Materials I, 2nd edition, Butterworth-Heinemann, 19 96. Further reading S. ... MPa? Answer: 16 .2 mm, or less. 14 .4 Aluminium sheet is to be rolled according to the following parameters: sheet width 300 mm, starting thickness 1 mm, reduced thickness 0....

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... Publishers, 19 82. D. W. Richardson, Modern Ceramic Engineering, Marcel Dekker, 19 82. Problems 18 .1 In order to test the strength of a ceramic, cylindrical specimens of length 25 mm and diameter 5 mm are ... 10 0 mm, b = d = 10 mm. The median value of σ r (i.e. σ r for P s = 0.5) was 300 MPa. The ceramic is to be used for components with dimensions l = 50 mm, b = d = 5 mm l...

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... necessitates a different design approach (Chapter 27). Most polymers are made from oil; the technology needed to make them from coal is still poorly developed. But one should not assume that dependence ... this chapter we examine three cement pastes: the primitive pozzolana; the widespread Portland cement; and the newer, and somewhat discredited, high-alumina cement. And we con- sider the pro...

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... unnormalised across the top and normalised by T g along the bottom. (The normalisations make the diagrams more general: similar polymers should have similar normalised diagrams.) The diagram is divided, ... allowing them to be formed by injection moulding, vacuum forming, blow moulding and compression moulding. Thermosets, on the other hand, are heated, formed and cured simultaneously, usual...

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... into board such as laminated plywood, chipboard and fibre-building board. Summary: wood compared to other materials The mechanical properties of wood (a structural material of first importance ... joined by cementing, by welding and by various sorts of fasteners, many themselves moulded from polymers. Joining, of course, can sometimes be avoided by integral design, in which coupled components...

Ngày tải lên: 11/08/2014, 02:22

... Richardson, Modern Ceramic Engineering, Marcel Dekker, 19 82. (d) Polymers DuPont Design Handbooks, DuPont de Nemours and Co., Polymer Products Department, Wilmington, Delaware 19 898, USA, 19 81. ICI ... more demanding struc- tural applications, have design methods evolved. In designing with ductile materials, a safety-factor approach is used. Metals can be used under static loads wit...

Ngày tải lên: 11/08/2014, 02:22