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A Continuous Cooling Transformation (CCT) diagram for 1080 steel (iron with 0.80 wt.% carbon) is shown on the Final Exam Template. Directly on the diagram sketch cooling curves beginning above the eutectoid temperature that will result in the following microstructures (be sure to clearly label each of your curves): Curve 1: Coarse Pearlite Curve 2: Fine Pearlite Curve 3: Martensite with no pearlite Curve 4: A mixture of martensite and pearlite.

The image below shows the microstructure of a lead-tin (Pb-Sn) alloy resulting from slow equilibrium cooling. The dark circular regions are from the proeutectic (or primary) lead-rich phase, and the light-dark lamellar structure is from the Pb-Sn eutectic. Given that the weight fraction of the proeutectic phase is 0.27, use the lever rule to calculate the composition (C0) of the Pb-Sn alloy. Write your answer and show your work on the Final Exam Template.

If the current calculated in Question 26 is maintained in the coil and the iron-silicon alloy is removed leaving only vacuum calculate the flux density generated by the coil. Please show your work and your answer on the Final Exam Template.

Semicrystalline polymers exhibit both a glass transition temperature and a melting temperature.

The 21¯1{“version”:”1.1″,”math”:”21¯1″}lies within the 1¯ 1¯ 1{“version”:”1.1″,”math”:”1¯ 1¯ 1″}.

This information applies to problems 9-11. You have three rectangular plates of aluminum alloy 6061. Plate 1 is undeformed, Plates 2 and 3, starting in the undeformed state, have been strain hardened at room temperature to the equivalent of a true strain of: 0.05 for Plate 2 and 0.20 for Plate 3. Using the information in the Table, calculate the true stress of Plate 2 required to reach a true strain of 0.05 and show your work on the Final Exam Template.  Data for Undeformed Aluminum 6061 Yield Stress 55 MPa Ultimate Tensile Strength 124 MPa Strain Hardening Constant , K 224 MPa Strain Hardening Exponent , n 0.21

A copper plate is subjected to 30% cold work in a rolling mill and subsequently heated in a furnace. The figure on the Final Exam Template shows a qualitatively correct plot of tensile strength versus temperature for the plate as it recrystallizes during heating. Add a qualitatively correct recrystallization curve to this plot representing copper that is subjected to 50% cold work in a rolling mill. Assume that heating begins well before the material begins to recrystallize and that the temperature increases until the material is fully recrystallized.

Writing your answer on the Final Exam Template, what phase(s) are present in a 80 wt.% Sn- 20 wt.% Pb alloy held at 100°C?

From your handout on magazine design, what are some things to remember for achieving a good magazine layout ?

A Downstyle headline is what?