Iron (Fe) is among the most abundant elements in the earth’s crust. It is a constituent in structural materials where strength/weight is a design Figure of Merit. Its grain orientation is highly influenced by the alloying elements that affect the strength of iron and its alloys (steels). For example, steel (Fe-C) is one
Iron (Fe) is among the most abundant elements in the earth’s crust. It is a
constituent in structural materials where strength/weight is a design Figure of
Merit. Its grain orientation is highly influenced by the alloying elements that
affect the strength of iron and its alloys (steels). For example, steel (Fe-C) is one
of the strongest alloys due to the advantageous position of carbon as an
interstitial solid in the Fe atoms matrix. Carbon (C) slightly distorted and
provided tension to the Iron (Fe) matrices, which later increased its toughness
and strength.
(i) Give two example of non-ferrous metals, which each have substitutional
and interstitial solid solutions, respectively. Explain the process of how
this metal is collected from the raw ores.
(ii) Briefly describe the application of both metals alloys and why these alloys
are suitable for that applications.
(iii) With the information of the actual freezing point, explain the solidification
process and cooling curve of the chosen metal alloys and their pure metal.
(iv) Compare the melting point of the chosen metal alloys with 202steel alloy.
Critically explain which alloys are better at higher temperature
applications and why?
(v) Give examples of data that show the universal use of steel and the
continuing need for improved steel materials technology.
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