Please enable JavaScript to view this page.

Engineering Materials

EGR 221

Engineering Materials

EGR 221

Course Description

Prerequisite: CHM 111 and MTH 161 or equivalents. Introduces material classification based on their structure, properties and performance in various applications. Examines the micro and macro structures of metals, polymers, glasses, ceramics and composites and their structural relationship to their properties and performance in various applications Focuses on phase diagrams, microstructural changes caused by solid-state transformations, elastic and plastic behavior, the effects of the environment, and application selection criteria. (45-0)

Outcomes and Objectives

Describe the structure and atomic bonding of crystalline and amorphous solids.

Objectives:

  • Identify the ionic, covalent, metallic, hydrogen and van der Waals bonds and relate them to material structures.
  • Identify the differences in atomic/molecular structure between crystalline and noncrystalline materials.
  • Compare the various unit cell configurations and relate them to material structure and properties.
  • Distinguish between single crystal and polycrystalline materials.

Describe imperfections in solid materials.

Objectives:

  • Identify both vacancy and interstitial crystalline defects.
  • Relate crystalline imperfections to material properties.

Describe mechanical, physical and chemical properties of materials.

Objectives:

  • Identify the mechanical, physical and chemical properties of materials.
  • Relate the mechanical, physical and chemical properties of materials to material behavior.
  • Describe mechanical testing of material properties.
  • Relate ductility, working stress and hardness to manufacturing and performance criteria.

Describe strengthening mechanisms in materials.

Objectives:

  • Identify mechanisms of strengthening including solid solution strengthening, strain hardening and grain size reduction.
  • Discuss diffusion strengthening and relate it to material properties.

Describe phase diagrams.

Objectives:

  • List the various components of phase diagrams.
  • Relate the binary phase diagram to phase compositions.
  • Use the iron-carbon phase diagram to identify phase transformations and critical temperatures.

Describe the forms, mechanisms and environments of material failure.

Objectives:

  • Identify corrosion mechanisms in various materials.
  • Characterize ductile and brittle fractures, fatigue, creep and electrochemical corrosion cells.
  • List the corrosion mechanisms for metals, polymers, glasses, ceramics and composites.

Develop an ability to communicate effectively both orally and in writing.

Objectives:

  • Analyze the information within an appropriate context.
  • Organize written information into tables, charts and graphs to facilitate interpretation.
  • Correctly interpret the information contained in charts and graphs.
  • Draw conclusions from the information contained in charts and graphs.
  • Project trends from charts and graphs.
  • Use writing tasks to promote learning.

Think critically.

Objectives:

  • Compare analogous cases, issues, principles, theories, and contexts.
  • Generate and collect relevant observable or measurable information or data.
  • Organize and present information or data in tables, charts and graphs.
  • Recognize bias, narrowness, and contradictions in a point of view.
  • Evaluate the significance and quality of questions and their formulations.
  • Identify criteria or standards appropriate for evaluating ideas, theories and models.