Metals & alloys · Nickel & cobalt alloys
Ni–20Al reference
A nickel–aluminium reference composition used to explore γ/γ′ ordering, intermetallic stability and high-temperature phase relations.
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01
Overview
- Material class
- Metals & alloys
- Category
- Nickel & cobalt alloys
- Family
- Nickel Superalloy
- Product forms
- Casting, Powder/feedstock
Composition
| Constituent | Min | Max | Typical | Note |
|---|---|---|---|---|
| Ni | 80 | |||
| Al | 20 |
02
Properties and conditions
Engineering properties
| Property | Value | Unit | Condition |
|---|---|---|---|
| Density | ~7.2–7.8 | g/cm³ | phase-fraction dependent |
| Elastic modulus | composition dependent | GPa | Representative; verify product form and condition |
| Primary phases | γ, γ′ and/or β | temperature dependent | |
| Melting range | model dependent | °C | Representative; verify product form and condition |
| Oxidation response | Al-content dependent | not a certified property |
Conditions
Representative supplied condition
Condition not fully specified in the source record.
03
Processing and use
Processing
- Composition basis must be stated because atomic and mass percent differ strongly.
- Microstructure depends on thermal path and phase field.
Applications
- Order–disorder studies
- Superalloy phase teaching
- Binary phase-diagram exploration
Selection considerations
- Not a commercial superalloy.
- Use for phase-behaviour screening only.
Open in an analysis tool
04
Standards and related materials
Standards and designations
| System | Designation | Note |
|---|---|---|
| MATAMET | Ni–20Al reference | Research composition; not a procurement grade |
05
Sources and context
Sources
- IMMES Simulation Lab reference compositionExisting reference
- U.S. Department of Energy critical materials programStrategic reference
Confirm the applicable specification, product form and condition before using values for design or procurement.
Supply and sustainability
Laboratory melt or powder blend rather than a standard commercial grade.
Research reference for reducing experimental iteration in alloy design.
Strategic context
Established engineering material with documented processing–performance relationships.