materials and manufacturing process ALL ANSWERS MUST BE IN SI UNITS! 1. There ar
ID: 2998395 • Letter: M
Question
materials and manufacturing process
ALL ANSWERS MUST BE IN SI UNITS! 1. There are two principal types of metal alloys. a. Draw pictures showing the two types of alloy atomic configurations. Identify the atoms by size or color. 2. A metal alloy contains two phases. a. Are the compositions of the phases the same or different? ____________ b. In general, are the crystal structures the same or different? ____________ c. If there is a mixture of phases, will the physical properties be LOCALLY anisotropic or isotropic? ________________ 3. You have a TWO stage, TANDEM rolling mill. Read the textbook, pages 318-327, and in particular Fig. 3.11. The TANDEM configuration allows up to 60% maximum reduction in each stage. You have a billet of copper 5m long by 0.5m wide by 0.25m. The copper was heated before entering the first stage so it is malleable. The initial feed rate is 0.1 m/s. You set the thickness to 60% thickness reduction for both stages. There are no width-constraining rollers. THINK first! a. What is the width and thickness of the copper billet coming out of the first stage? b. What is the width and thickness of the copper billet coming out of the second stage? c. What is the speed of the copper strip at the exit of the first stage? d. What is the speed of the copper strip at the exit of the second stage?Explanation / Answer
The principal type of metal alloys, the classification is based on the position occupied by solute atoms in the solvent matrix. In case of interstitial alloys the position occupied by solute atoms is interstitial sites and in second main category solute atoms occupy the parent solvent atoms position. The choice of the positions is mainly determined from the relate sizes of the atoms of solute and solvent atoms, also total amount of strain that can be accommodated into the material (solvent matrix).
2. a) Composition of the phases are different may not be the same
b) In general same crystal structures forms solid solutions
c) Locally anisotropic properties, in bulk whole material is isotropic in nature (observed in polycrystalline material)
Third question is not properly framed
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