Application
This unit of competency defines the knowledge and skills required to interpret phase diagrams and so predict the microstructures of binary alloys.
It applies to the interpretation of cooling phase diagrams as used in metallurgy. The application will primarily be to phase diagrams of metals and alloys showing temperature and composition variables.
It applies where a technician will be required to recommend a phase transition process in order to obtain a required microstructure, or to predict a microstructure from a known phase transition process.
No licensing, legislative or certification requirements apply to this unit at the time of publication.
What You'll Learn
1. Determine job requirements
- 1.1 Follow standard operating procedures (SOPs)
- 1.2 Comply with work health and safety (WHS) requirements at all times
- 1.3 Identify job requirements from work information
2. Identify the microstructures from an equilibrium cooling phase diagram
- 2.1 Obtain phase diagram for metal or alloy from internal or external sources
- 2.2 Identify number, composition, proportion and structural arrangement of phases in binary alloys
- 2.3 Identify structural changes due to varying proportion of alloying elements and temperature
- 2.4 Identify the phase changes and final microstructures of binary alloys cooled under equilibrium conditions from the melt or during heat treatment operations
3. Identify the microstructures from a non-equilibrium cooling phase diagram
- 3.1 Identify number, composition, proportion and structural arrangement of phases in binary alloys
- 3.2 Identify structural changes due to varying proportion of alloying elements and temperature
- 3.3 Identify the phase changes and final microstructures of binary alloys cooled under equilibrium conditions from the melt or during heat treatment operations
4. Recognise characteristic microstructures of binary alloys
- 4.1 Recognise characteristic structures of dendrites (homogeneous and cored) columnar and equiaxed grains
- 4.2 Recognise characteristic structures resulting from eutectic, eutectoid and peritectic reactions
- 4.3 Recognise characteristic structures resulting from solid state precipitation
Assessment Requirements
Performance Evidence
Evidence required to demonstrate competence in this unit must be relevant to and satisfy the requirements of the elements and performance and include:
following work instructions, standard operating procedures (SOPs) and safe work practices
identifying and interpreting the microstructures from an equilibrium and non-equilibrium cooling phase diagrams criteria on at least two occasions
producing a basic cooling phase diagram from supplied data criteria on at least two occasions
estimating composition from the structure of a phase diagram
predicting structure from the composition from a phase diagram.
Note: Where a volume and/or frequency is not specified, demonstration must be provided at least once.
Knowledge Evidence
Evidence required to demonstrate the required knowledge for this unit must be relevant to and satisfy the requirements of the elements and performance criteria and include knowledge of:
safe work practices and procedures
scientific techniques and principles of cooling phase diagrams
methods of construction of phase diagrams for binary alloys
phase changes that occur in binary alloy systems as recorded by the appropriate phase diagrams
equilibrium and non-equilibrium cooling of binary alloys and the resulting microstructures in cast and heat-treated material.
Assessment Conditions
Assessors must:
have vocational competency in interpreting basic binary phase diagrams at least to the level being assessed with relevant industry knowledge and experience
satisfy the assessor requirements in the Standards for Registered Training Organisations 2015 or its replacement and comply with the National Vocational Education and Training Regulator Act 2011, its replacement or equivalent legislation covering VET regulation in a non-referring state/territory as the case requires.
Where possible, assessment must occur in operational workplace situations. Where this is not possible or where personal safety or environmental damage are limiting factors, assessment must occur in a sufficiently rigorous simulated environment that reflects realistic operational workplace conditions that cover all aspects of workplace performance, including environment, task skills, task management skills, contingency management skills and job role environment skills.
Conditions for assessment must include access to all tools, equipment, materials and documentation required including relevant workplace procedures, product and manufacturing specifications.
Assessment processes and techniques must be appropriate to the language, literacy and numeracy requirements of the work being performed and the needs of the candidate.
Foundation Skills
- text: This section describes those language, literacy, numeracy and employment skills that are essential to performance. Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.
Parent Qualifications
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Request Early AccessLast updated from training.gov.au: 25 February 2026