Overview
Iron aluminides(Fe 3 Al) are potential candidates for high temperature applications due to its light weight, low cost and attractive properties such as high strength, resistance to oxidation, sulfidation and corrosion. However, poor ductility, inadequate creep resistance and low fracture toughness limit their commercial applications. Ductility and strength of Fe 3 Al are significantly improved not only at room temperature but also at high temperatures (up to 700C) by incorporating fine grain structure and stable nano-sized complex oxide dispersoids (Y-Ti-O and Y-Al-O) in Fe 3 Al matrix. The material (ODS Fe 3 Al) exhibited good oxidation resistance up to 1150C. The creep fatigue interaction studies indicated that ODS-Fe3Al can be used as turbine blades up to 550 and as furnace crucibles up to 1150C. Long term creep properties are being evaluated.
Key Features
- High operating temperature of 650-700C
- Light weight
- Exhibits yield strength of 1090 MPa and elongation of 16% at RT
- Exhibits yield strength of 165 MPa and elongation of 56% at 700C
- Potential candidates to replace nickel based super alloys
- Excellent oxidation and corrosion resistance
Potential Applications
- Blades for ultra super critical steam turbines
- High pressure compressor and low pressure turbine blades of gas turbines
- Other high temperature applications like furnace crucibles and plates
Status
- Basic concepts and understanding of underlying scientific principles
- Short listing possible applications
- Research to prove technical feasibility for targeted application
- Coupon level testing in stimulated conditions
Intellectual Property Development Index (IPDI)
Level
1
2
3
4
5
6
7
8
9
10
Description
Basic concepts and understanding of underlying scientific principles
Shortlisting possible applications
Research to prove technical feasibility for targeted application
Coupon level testing in simulated conditions
Check repeatability/consistency
Prototype testing in real-life conditions
Check repeatability/consistency
Reassessing feasibility (IP, competition technology, commercial)
Initiate technology transfer
Support in stabilizing production
Status
| Level | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| Description | Basic concepts and understanding of underlying scientific principles | Shortlisting possible applications | Research to prove technical feasibility for targeted application | Coupon level testing in simulated conditions | Check repeatability/consistency | Prototype testing in real-life conditions | Check repeatability/consistency | Reassessing feasibility (IP, competition technology, commercial) | Initiate technology transfer | Support in stabilizing production |
| Status |
|
|
|
|
For more details on Intellectual Property Development Indices, Click here
Technology Readiness Level (TRL)
| TRL | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
|---|---|---|---|---|---|---|---|---|---|
| Description | Basic Principles | Concept Formulation | Proof of Concept | Lab Validation | Relevant Environment | Prototype Demo | Operational Demo | System Qualified | Proven / Market Ready |
| Status |
|
|
|
|