search
Log In
0 votes

Equal amounts of a liquid metal at the same temperature are poured into three moulds made of steel, copper and aluminum. The shape of the cavity is a cylinder with 15 mm diameter. The size of the moulds are such that the outside temperature of the moulds do not increase appreciably beyond the atmospheric temperature during solidification. The sequence of solidification in the mould from the fastest to slowest is
(Thermal conductivities of steel, copper and aluminum are $60.5$, $401$ and $237$ $W$/$m-K$, respectively. Specific heats of steel, copper and aluminum are $434, 385$ and $903$ $J$/$kg-K$, respectively. Densities of steel, copper and aluminum are $7854$, $8933$ and $2700$ $kg/m^3$, respectively.)

  1. Copper - Steel - Aluminum
  2. Aluminum - Steel - Copper
  3. Copper - Aluminum - Steel
  4. Steel - Copper - Aluminum
in Materials, Manufacturing and Industrial Engineering 24.6k points
recategorized by

Please log in or register to answer this question.

Answer:

Related questions

0 votes
0 answers
0 votes
0 answers
Spot welding of two steel sheets each $2 \: mm$ thick is carried out successfully by passing $4 \: kA$ of current for $0.2$ seconds through the electrodes. The resulting weld nugget formed between the sheets is $5 \: mm$ in diameter. Assuming cylindrical shape for the nugget, the thickness of ...
asked Feb 24, 2017 in Materials, Manufacturing and Industrial Engineering Arjun 24.6k points
...