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Magazine Problem 2
(a) Cite three reasons why ferrous alloys are used so extensively. (b) Cite three characteristics of ferrous alloys that limit their utilization.
Problem 3
What is the function of alloying elements in tool steels?
Problem 4
Compute the volume percent of graphite \(V_{\mathrm{Gr}}\) in a 2.5 wt \(\%\) C cast iron, assuming that all the carbon exists as the graphite phase. Assume densities of 7.9 and \(2.3 \mathrm{g} / \mathrm{cm}^{3}\) for ferrite and graphite, respectively.
Problem 5
On the basis of microstructure, briefly explain why gray iron is brittle and weak in tension.
Problem 6
Compare gray and malleable cast irons with respect to (a) composition and heat treatment, (b) microstructure, and (c) mechanical characteristics
Problem 7
Compare white and nodular cast irons with respect to (a) composition and heat treatment, (b) microstructure, and (c) mechanical characteristics.
Problem 9
What is the principal difference between wrought and cast alloys?
Problem 11
What is the chief difference between heattreatable and non-heat-treatable alloys?
Problem 12
Give the distinctive features, limitations, and applications of the following alloy groups: titanium alloys, refractory metals, superalloys and noble metals.
Problem 13
Cite advantages and disadvantages of hot working and cold working.
