Reference no: EM131118540
1. (a) How are the following properties of iron affected when carbon is alloyed with it?
Illustrate your answer with reference to the microstructure of the steel.
- hardness
- strength
- ductility.
(b) What percentage of carbon produces the strongest plain carbon steel?
2. The ultimate tensile strength of a material was tested using 10 samples.
The results of the tests were as follows :
711 N mm-2, 732 N mm-2, 759 N mm-2, 670 N mm-2, 701 N 765 N mm-2, 743 N mm-2, 755 N mm-2, 715 N mm-2, 713 N mm-2.
(a) Determine the mean and standard deviation of these results.
(b) Express the values found in (a) in GPa.
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