MFGE 337.HW#4.Forming.W16 (1)

MFGE 337.HW#4.Forming.W16 (1) - Assignment#4 MFGE 337 Metal...

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Assignment #4 Metal Forming (66 pts total) MFGE 337 Materials & Manufacturing Processes Multiple Choice (1 pt for each answer = 18 pts): 17.1 Which of the following are bulk deformation processes (three correct answers): (a) bending, (b) deep drawing, (c) extrusion, (d) forging, (e) rolling, and (f) shearing? 17.2 Hot working of metals refers to which one of the following temperatures relative to the melting point of the given metal on an absolute temperature scale: (a) room temperature, (b) 0.2 T m , (c) 0.4 T m , or (d) 0.6 T m ? 17.3 Which of the following are advantages and characteristics of hot working relative to cold working (four correct answers): (a) fracture of workpart is less likely, (b) friction is reduced, (c) increased strength properties, (d) isotropic mechanical properties, (e) less overall energy is required, (f) lower deformation forces is required, and (g) more significant shape changes are possible, and (h) strain-rate sensitivity is reduced? 17.4 Increasing strain rate tends to have which one of the following effects on flow stress during hot forming of metal: (a) decreases flow stress, (b) has no effect, or (c) increases flow stress? 18.1 The starting workpiece in steel hot rolling of plate and sheet stock is which of the following (one best answer): (a) bar stock, (b) billet, (c) bloom, (d) slab, or (e) wire stock? 18.2 Which of the following stress or strength parameters is used in the computation of rolling force (one best answer): (a) compression strength, (b) average flow stress, (c) final flow stress, (d) tensile strength, or (e) yield strength?
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  • Spring '14
  • Strength of materials, Tensile strength, Metalworking, Work hardening, flow stress

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