University | Global School of Technology & Management (GSTM) |
Subject | Diploma in Mechanical Engineering |
Module: Materials Engineering
Question 1
- What are the classifications of Engineering Materials? Give 2 examples each.
- Define/Compare their three Material Properties.
Question 2
- Explain with the aid of diagrams Hexagonal Close Packaging, Face Centred Cubic Packaging & Body Centred Cubic Packaging.
- Define/Compare three Material Properties of materials with the above packaging
Question 3
- Explain with the aid of diagrams the progress of the Tensile test.
- Comment and draw a stress-strain diagram for stainless steel.
Question 4
- Comment on the impact of temperature on material test with two examples.
- Draw their DBTT and explain why low DBTT is preferred.
Question 5
- Explain three basic steps of heat treatment.
- Explain any two heat treatment processes and the mechanical properties that can be achieved.
Question 6
- Explain the difference between Case Hardening & Surface Hardening.
- Give 2 examples each with an explanation.
Question 7
- Explain with the aid of a phase diagram allotropies of Iron.
- Explain with reasons two properties of any of the iron allotropies.
Question 8
- Explain with the aid of a diagram the Iron-Carbon Phase Diagram.
- Plot & Explain Cementite in Iron-Carbon Phase Diagram.
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