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Modern Material Science And Engineering

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. One of the bravais lattice that contains one atom in each corner of the unit cell as well as one atom in the center of the unit cell






2. A point defect found in ceramic materials that occurs when a cation diffuses onto an interstitial site on the lattice






3. A mathematical representation of the magnitude and direction of distortions in a lattice caused by dislocations






4. Large - artificially produced monocrystals






5. Lattice defects caused by the addition of a partial plane into an existing lattice structure






6. The first level of the structure of materials - describing the atoms present






7. The distance between repeated planes in a lattice






8. A numerical quantity developed by the American Society for Testing and Materials (ASTM) to characterize grain sizes in materials






9. The use of light to magnify objects up to 2000 times






10. Point defects that result from the absence of an atom at a particular site






11. Materials in which the entire structure is a single unbroken grain






12. The first set of panes in a material to experience slip under an applied stress






13. The 14 distinct crystals structure into which atoms arrange themselves in materials






14. A specific set of h






15. A means of relating the amount of spreading in a X- ray diffractogram to the thickness of the crystallites in the sample






16. The process of forming small aligned clusters of atoms that serve as the framework for crystal growth






17. A point defect that occurs in ceramics when both a cation and an anion are missing from a lattice






18. The second step in the formation of crystallites - which is dependent on temperature and can be described using the arrhenius equation






19. The interaction of waves






20. The third level of structure in materials - describing the sequencing of crystals at a level invisible to the human eye






21. Generalized equation used to predict the temperature dependence of various physics properties






22. The equations used to determine the critical resolved shear stress in a material


23. The size - shape - and arrangement of atoms in a three- dimensional lattice






24. Correlation used to estimate the yield strength of a given material - based on grain size






25. Formula that relates interplaner spacing in a lattice to constructive interference of diffracted X- rays


26. A hypothetical structure accounting for irregularities in the boundaries between crystallites






27. The edge lengths and angels of a unit cell; describes the sizes and shapes of the lattices






28. Composed of both the slip plane and the slip directions






29. Tiny clusters of arranged atoms that serve as the frameworks for subsequent crystal growth






30. A numerical system used to represent specifics planes in a lattice






31. Homogeneous nucleation: grain boundaries: lattice/surface interactions:






32. The amount of the unit cell occupied by atoms as opposed to void space






33. One of the bravais lattices that has one atom in each of the 8 corners of the unit cell and one atom on each face of the unit cell






34. Mechanism by which dislocations move in directions that are perpendicular to the slip plane






35. The smallest subdivision of a lattice that still contains the characteristics of that lattice






36. The line extending along the extra partial plane of atoms in an edge dislocation






37. The fourth level of structure in materials - describing how the microstructures fit together to form the material as a whole






38. The direction that dislocation moves in






39. The presence of both screw and edge dislocations separated by a distance in the same lattice






40. New planes formed after the material has undergone slip






41. Crystallite materials with sizes of nanometers in length






42. Microscopes that focus a high- energy beam of electrons at the source and collect the back- scattered beam of these electrons






43. The movement of dislocations through a crystal - caused when the material is placed under shear stress






44. Provides a framework for the new atoms to follow in constructing a monocrystal






45. A flaw in the structure of a material that occurs at a single site in the lattice - such as vacancies - substitutions - and interstitial defects






46. Materials whose order extends only to nearest neighbor atoms






47. The clustering of atoms around an impurity that provide a template for crystal growth






48. The lowest stress level at which a slip will begin in the material






49. The ares of a material that separate different crystallite regions






50. A nullification caused by two waves interacting out of phase