Q2 (200 points): A cylindrical rod of brass has diameter of 10 mm after cold working...

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Q2 (200 points): A cylindrical rod of brass has diameter of 10 mm after cold working and has tensile strength of 400 MPa. What were the diameter and tensile strength before cold working? What is the ductility after cold working? 800 600 TS (MPa) 400 200 0 % EL 60 60 40 20 20 40 60 0 20 % Cold Work 1 40 60 % Cold Work Q3 (400 points): A cylindrical rod of brass originally 10 mm in diameter is to be cold worked by drawing. The circular cross section will be maintained during deformation. A cold-worked tensile strength in excess of 380 MPa and a ductility of at least 15%EL are desired. Furthermore, the final diameter must be 7.5 mm. Explain how this may be accomplished. Use the graphs given in previous question. Q2 (200 points): A cylindrical rod of brass has diameter of 10 mm after cold working and has tensile strength of 400 MPa. What were the diameter and tensile strength before cold working? What is the ductility after cold working? 800 600 TS (MPa) 400 200 0 % EL 60 60 40 20 20 40 60 0 20 % Cold Work 1 40 60 % Cold Work Q3 (400 points): A cylindrical rod of brass originally 10 mm in diameter is to be cold worked by drawing. The circular cross section will be maintained during deformation. A cold-worked tensile strength in excess of 380 MPa and a ductility of at least 15%EL are desired. Furthermore, the final diameter must be 7.5 mm. Explain how this may be accomplished. Use the graphs given in previous question.