Quiz 3: Things to know


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For each chapter, understand fully each of the homework problems.

Ch. 10. Phase Transformations in Metals    

  • Why metastable microstructures occur when not cooling extremely slow.
  • Role of nucleation and diffusion in the formation of microstructures.
  • What TTT plots are and how they are derived from isothermal transformation diagrams.
  • Temperature dependence of nucleation and diffusion.
  • What ferrite+cementite microstructures form.
  • What singles out martensite from other microstructures.
  • Calculate the percentage of different microstructures that form for different ways of cooling. 
  • What is tempered martensite and how it differs from martensite and bainite.
  • Reason for different properties of different microstructures.
  • Ch. 11. Thermal Processing of Metal Alloys

  • Reasons why thermal processing is done.
  • What is austenizing and the difference between normalizing, full annealing and spheroidizing.
  • How cooling rates depend on the size of a metal piece and distance to the surface.
  • Why cooling rate is related to hardness.
  • What is hardenability and why it depends on alloying.
  • How is hardenability measured.
  • What steps are involved in precipitation hardening (aging).
  • What is solution hardening.
  • What are the conditions for precipitation hardening.
  • Calculate the temperature and time constraints of aging that will produce desired properties.
  • What is overaging. 
  • Ch. 13.  Ceramics - Structures and Properties

  • Different types of ceramics.
  • General properties of ceramics.
  • Type of bonds involved in ceramics.
  • The role of charge neutrality.
  • How the cation and anion radii influence coordination and structure.
  • How to calculate density or crystal structure given other properties.
  • Distinguish different crystal structures.
  • What are silicate ceramics and why are they important.
  • Why is the silicate tetrahedron not a unit cell.
  • Type of imperfections and resulting charges.
  • How charge defects appear when impurities are added and how to calculate them.
  • How ceramics fracture and the difference with metals..
  • What is the difference in behavior to compressive or tensile loads. 
  • The different forms of plastic deformation in crystalline and amorphous ceramics.
  • Ch. 14.  Ceramics - Applications and Processing

  • What is the glass transition temperature.
  • Identify melting, working, softening, and annealing points.
  • What is tempered glass and why it is stronger than non-tempered glass. 
  • Ch. 15.  Polymer Structures

  • What is a polymer.
  • What are the general properties of polymers.
  • Which are the primary and secondary bonding.
  • How the properties of a chain depends on whether C-C bonding is single or multiple. 
  • That polymer chains have a distribution of size and mass.
  • What are isomers.
  • How to calculate mer mass and mean mer mass for a copolymer.
  • How to calculate degree of polymerization.
  • What are linear, branched, cross-linked, and network structures and how they affect properties such as ability to crystallize, melting point, etc.
  • How molecular configuration affects properties.
  • Identify different type of radical side groups.
  • Identify graft, block, and random co-polymers.
  • Identify parts in the structure of a polymer lamellae.
  •