2.1: Explain how one heat treatment process and two other treatment processes affect the structure, properties and behaviour of the parent material
- Explain how would you harden and quench a gear box made form 0.4% carbon steel. Pay particular attention to the structure and properties, temperature and quenching bath used.
(Maximum length 400 words)
- Explain how the following treatment processes affect the structure and properties:
- Powder coating of steel
- Dispersion strengthening of aluminium alloys
(Maximum length 400 words)
Learning Outcome 2.2
2.2: Explain how one liquid processing method and two mechanical processing methods affect the structure, properties and behaviour of the parent material
- A sand casting, a die casting, a hot rolled product and a cold rolled product are all produced form the same composition alloy. Give an outline of the differences between the four products in terms of:
- The grain structure
- Properties of tensile strength and ductility
- Explain the preferred casting method for producing the following with appropriate reasons:
- Cast iron cylinder blocks for internal combustion engines
- Aluminium alloy cylinder heads for internal combustion engines
- 10 m lengths of cylindrical steel water pipe, with a wall thickness of 20 mm
- Both hot and cold working processes are used for the manufacture of sheet metal, for example aluminium sheet of 1.5 mm thickness. Why is it necessary to use both types of processing?
(Maximum length 200 words for each question)
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2.3: Investigate how the composition and structure of metal alloys, polymers and polymer matrix composites influence the properties of parent material
- Investigate and report how the following compositions and structures influence the properties of the parent material:
- Alloying of metals
- Polymers
- Composites polymer matrix
(Maximum length 300 words)
