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Tas s6 engineering studies phases and phase diagrams rl
Phases of metals
Subject
Engineering Studies
263 Documents
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| NSW Department of Education
Stage 6 – Engineering Studies
Material Science
This activity is designed to develop student’s knowledge of phases in materials and the
conditions which cause phase transitions such as temperature and pressure.
Outcomes
P1 explains the relationship between properties, structure, uses and applications
of materials in engineering
P2 describes the types of materials, components and processes and explains their
implications for engineering development
Engineering Studies Stage 6 Syllabus (2011) © NSW Education Standards Authority
(NESA) for and on behalf of the Crown in right of the State of New South Wales,
2013.
Delivery strategies
This resource is adaptable and could be used in online platforms such as Google
classroom. Links to the videos and websites could be posted for students to access for
learning at home. The activities and questions are designed for general preliminary
materials content, but could be adjusted to suit module specific HSC materials content.
education.nsw.gov
Focus area Phases and phase diagrams
Syllabus Content Students learn about:
Classification of materials
Properties of materials
o Physical and mechanical properties
Structure of materials
o Atomic structure
o Bonding
o Crystalline and non-crystalline structures
Resources Introduction to Materials Science and Engineering UNSW
Complete module 2A introduction to phase diagrams and metal alloys and
module 2B phase transformations
Activities/
questions
1. What is a ‘phase’?
2. What happens to titanium if it is heated above 882°C?
3. What is polymorphism?
4. List three examples of polymorphic materials.
5. What is the stable phase of H 2 O at 60°C and 0 atm?
6. What is an alloy?
7. What is the difference between wt% and at%?
8. What is the difference between a substitutional solid solution and
an interstitial solid solution?
9. What is a phase transformation?
10. What is a eutectic reaction?
11. Draw and label a microstructure diagram of hypoeutectic Pb-Sn and
hypereutectic Pb-Sn.
Suggested
answers
Suggested answers.
1. A phase is a region of a material with uniform physical and
chemical properties.
2. When titanium is heated above 882°C it changes from a
hexagonally close-packed structure to a body-centred cubic
structure.
3. Polymorphism refers to the ability of a solid material to exist in more
than one form of crystal structure.
4. Titanium, Pb-Sn, steel
5. Water vapour.
6. An alloy is a solid solution of a metal with one or more metal or non-
metal elements.
7. wt% is short for weight % and is the mass of one of the components
expressed as a total mass of the sample. at% is short for atomic %
and is the number of atoms of one component expressed as a
percentage of the total number of atoms in the sample.
1 Stage 6 Engineering studies – Phase diagrams – Teacher resource
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Tas s6 engineering studies phases and phase diagrams rl
Subject: Engineering Studies
263 Documents
Students shared 263 documents in this course
Was this document helpful?
| NSW Department of Education
Stage 6 – Engineering Studies
Material Science
This activity is designed to develop student’s knowledge of phases in materials and the
conditions which cause phase transitions such as temperature and pressure.
Outcomes
P1.2 explains the relationship between properties, structure, uses and applications
of materials in engineering
P2.1 describes the types of materials, components and processes and explains their
implications for engineering development
Engineering Studies Stage 6 Syllabus (2011) © NSW Education Standards Authority
(NESA) for and on behalf of the Crown in right of the State of New South Wales,
2013.
Delivery strategies
This resource is adaptable and could be used in online platforms such as Google
classroom. Links to the videos and websites could be posted for students to access for
learning at home. The activities and questions are designed for general preliminary
materials content, but could be adjusted to suit module specific HSC materials content.
education.nsw.gov.au
