4. For a fixed proportion of each phase in a two-phase specimen, how does phase boundary area vary with the shape of the second phase particles? Imagine you have a specimen where all the second phase particles are spheres and another in which all the second phase particles are flat plate-like particles: a. what would be the difference in phase boundary area for the specimen with spherical particles compared to the one with plate-like particles? b. what would be the difference in macroscopic physical properties for the specimen with spherical particles compared to the one with plate-like particles? 5. One way of making a metal bowl is to beat a flat sheet of metal into a bowl shape. What microscopic metallographic properties would you want for the metal used to make the bowl (think about single or multi-phased, small or large grained)? Explain why each of these properties is desirable