A bar of a steel alloy that exhibits the stress–strain behavior shown in Figure 7.33 is su...

A bar of a steel alloy that exhibits the stress–strain behavior shown in Figure 7.33 is subjected to a tensile load; the specimen is 300 mm (12 in.) long and has a square cross section 4.5 mm (0.175 in.) on a side.

(a) Compute the magnitude of the load necessary to produce an elongation of 0.45 mm (0.018 in.).

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(b) What will be the deformation after the load has been released?

Figure 7.33 Tensile stress–strain behavior for a steel alloy.