Quenching is often used in the manufacturing and/or heat
treatment of magnesium alloys, aluminium alloys
and steels.
Explain why quenching is used for each of these
three metals, and explain how this benefits the final
mechanical properties.
explain why we are doing a solution treatment before
aging treatment for alloys. b) describe the microstructure
difference between aged alloys with and without solution
treatment+quenching.
Metal hydrides are metal alloys that can store significant
quantities of hydrogen in their atomic lattice. For this reason,
they are considered potentially attractive for the on-board storage
of hydrogen for hydrogen fuel cell vehicles. A certain metal
hydride alloy can store 2 wt% hydrogen and has a density (including
the hydrogen) of 12 g?cm3. Treating hydrogen as an ideal gas, what
pressure would beneeded tocompressgaseous hydrogen
tothesameequivalent concentration thatit attains when absorbed in
the metal hydride?
Copper has been used for thousands of yers, either as a pure
metal or in alloys. It is frequently used today in the production
of wires and cables. Copper can be obtained through smelting or
recylcing. Determine the energy associated with each of these
processes in order to recycle 1.06 mol Cu. The smelting of copper
occurs by the balanced chemical equation:
CuO(s)+CO(g) --> Cu(s)+CO2(g)
Where deltaHfCuO is = 155/kJ/mol. Assume the process of
recycling copper is simplifed to just...