Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Engineering Posted 14 May 2018 My Price 4.00

Solidification of molten copper

Calculate the free work available to drive the following processes per kg of material. (a) Solidification of molten copper at 1080°C. (For copper, Tm = 1083°C, ?H = 13.02 kJ mol–1, atomic weight = 63.54). (b) Transformation from ß–Ti to a–Ti at 800°C. (For titanium, Te = 882°C, ?H = 3.48 kJ mol–1, atomic weight = 47.90). (c) Recrystallisation of cold-worked aluminium with a dislocation density of 1015 m–2. (For aluminium, G = 26 GPa, b = 0.286 nm, density = 2700 kg m–3). Hint – write the units out in all the steps of your working. Answers: (a) 567 J; (b) 6764 J; (c) 393 J.
 
 

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Maurice Tutor
(5)
Status NEW Posted 14 May 2018 02:05 PM My Price 4.00

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