You are working at the machine shop and Scott asks you to increase the strength of two previously undeformed pieces of metal. Both pieces are the same type of metal, but one has a circular cross-section of 17.5 mm in diameter, and the other one has a rectangular cross-section of 18 x 45 mm. You decided to deform the metal and at the end of the process, the specimen having a circular cross-section had a diameter of 14.9 mm and the specimen having a rectangular cross-section had deformed dimensions of 13 x 50 mm. After you finished your work, Scott asked you which of the specimen (circular or rectangular cross-section) was hardened the most after plastic deformation, and why. What was your answer?

You are working at the machine shop and Scott asks you to increase the strength of two previously undeformed pieces of metal. Both pieces are the same type of metal, but one has a circular cross-section of 17.5 mm in diameter, and the other one has a rectangular cross-section of 18 x 45 mm. You decided to deform the metal and at the end of the process, the specimen having a circular cross-section had a diameter of 14.9 mm and the specimen having a rectangular cross-section had deformed dimensions of 13 x 50 mm. After you finished your work, Scott asked you which of the specimen (circular or rectangular cross-section) was hardened the most after plastic deformation, and why. What was your answer?