1. The curve of true stress against true strain for the metal wire approximates to
Estimate the tensile strength of the wire and the work required to take 1 m3 of the wire to the point of necking
2. a. If the true stress–true strain curve for a material is defined by σ = Aεn, where A and n are constants, find the tensile strength sTS.
b. For a nickel alloy, n = 0.2 and A = 800 MN m-2. Evaluate the tensile strength of the alloy. Evaluate the true stress in an alloy specimen loaded to σTS.
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