FeCoNiCrMn powder
FeCoNiCrMn belongs to a class of multi-principal element alloys known as high entropy alloys. The near-equiatomic composition provides high configurational entropy leading to excellent strength, toughness, and stability at high temperatures.
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Overview of FeCoNiCrMn Powder
FeCoNiCrMn belongs to a class of multi-principal element alloys known as high entropy alloys. The near-equiatomic composition provides high configurational entropy leading to excellent strength, toughness, and stability at high temperatures.
Key properties of FeCoNiCrMn powder include:
- Exceptionell hållfasthet vid höga temperaturer och krypmotstånd
- Utmärkt utmattningshållfasthet och brottseghet
- Outstanding oxidation and corrosion resistance
- High microstructural stability at elevated temperatures
- Available in range of particle size distributions and morphologies
FeCoNiCrMn powder is suitable for high temperature structural parts, protective coatings, thermal spray, welding, additive manufacturing, and other demanding applications at elevated temperatures.
Composition of FeCoNiCrMn Powder
FeCoNiCrMn powder has the nominal composition:
Element | Sammansättning |
---|---|
Järn (Fe) | 20-25% |
Kobolt (Co) | 20-25% |
Nickel (Ni) | 20-25% |
Krom (Cr) | 15-20% |
Mangan (Mn) | 10-15% |
Kol (C) | <0.5% |
Kisel (Si) | <1% |
The high entropy composition results in superior thermal stability and mechanical properties compared to conventional alloys. Impurities are minimized.
Properties of FeCoNiCrMn Powder
FeCoNiCrMn powder possesses the following properties:
Fastighet | Värde |
---|---|
Täthet | 8.0-8.3 g/cm3 |
Smältpunkt | 1300-1400°C |
Termisk konduktivitet | 15-25 W/mK |
Elektrisk resistivitet | 70-90 μΩ.cm |
Young's modul | 200-220 GPa |
Poissonförhållande | 0.28-0.30 |
Draghållfasthet | 750-1200 MPa |
Utbyteshållfasthet | 500-900 MPa |
Töjning | 20-35% |
Hårdhet | 35-50 HRC |
The properties like strength, ductility, fatigue strength, and hardness are maintained up to temperatures exceeding 1000°C.
Production Method for FeCoNiCrMn Powder
Typical production methods for FeCoNiCrMn powder include:
- Atomisering av gas – High pressure inert gas used to atomize molten alloy to produce fine spherical powder with good flow and packing density.
- Atomisering av vatten – High velocity water jet breaks up molten metal stream into fine irregular powder particles. Lower cost but higher oxygen pickup.
- Mekanisk legering – Ball milling of blended elemental powders followed by sintering and secondary atomization.
Gas atomization provides the best control over powder characteristics like particle size distribution, morphology, purity and microstructure.
Applications of FeCoNiCrMn Powder
FeCoNiCrMn powder is used in high temperature applications including:
- Additiv tillverkning – Selective laser melting to produce complex parts needing exceptional high temperature strength for aerospace, automotive, etc.
- Beläggningar för termisk sprutning – Wire arc spraying to deposit thick protective coatings providing wear/corrosion resistance at elevated temperatures exceeding 750°C.
- Brazing Filler – For joining high temperature alloys and ceramics due to its oxidation resistance.
- Welding Consumables – Provides excellent weld strength and durability in high temperature or corrosive service conditions.
- Heat Treatment Fixtures – Powder metallurgy trays, baskets, fixtures used in heat treatment furnaces.
Specifications of FeCoNiCrMn Powder
FeCoNiCrMn powder is available under various size ranges, shapes, grades and purity levels:
- Partikelstorlek: From 10-45 μm for AM methods, up to 150 μm for thermal spray processes.
- Morfologi: Spherical, irregular and blended shapes. Spherical powder provides optimal flow and packing density.
- Renhet: From commercial purity to ultra-high purity grades based on stringent chemical analysis and application requirements.
- Ytarea: Low surface area preferred to minimize oxidation during handling and storage.
- Betyg: Customized composition and powder characteristics tailored for intended application and processing method.
Global Suppliers of FeCoNiCrMn Powder
Some of the major global suppliers of FeCoNiCrMn powder include:
- Sandvik Osprey (Storbritannien)
- Erasteel (France)
- Tekna (Kanada)
- Edgetech Industries (USA)
- CNPC Pulver (Kina)
- Hoganas (Sweden)
- AMETEK (US)
These companies produce various grades of FeCoNiCrMn powder using gas atomization, water atomization and mechanical alloying processes tailored for demanding applications.
Pricing of FeCoNiCrMn Powder
FeCoNiCrMn powder prices depend on factors like:
- Composition, purity levels
- Particle size distribution and shape
- Produktionsmetod
- Orderkvantitet
- Manufacturer and geographical location
Betyg | Prisintervall |
---|---|
Kommersiell | $100-150 per kg |
Hög renhet | $150-300 per kg |
Ultrafin | $300-500 per kg |
Särskild klass | $500-1000 per kg |
Gas atomized, controlled particle size, high purity powders command much higher pricing compared to commercial grades.
Storage and Handling of FeCoNiCrMn Powder
FeCoNiCrMn powder requires careful storage and handling:
- Should be stored in sealed containers under inert gas to prevent oxidation
- Need to control dust explosion hazards from fine powder accumulation
- Use proper PPE, ventilation, safety practices during powder handling
- Prevent contact between powder and incompatible materials
- Follow applicable safety guidelines from supplier SDS
Proper protective measures are essential when handling this reactive alloy powder.
Inspection and Testing of FeCoNiCrMn Powder
Key quality control tests performed on FeCoNiCrMn powder:
- Chemical analysis using OES or XRF to ensure composition is within specified limits
- Particle size distribution using laser diffraction as per ASTM B822 standard
- Morphology analysis through SEM imaging
- Powder flow rate measurement as per ASTM B213 standard
- Densitetsbestämning med heliumpyknometri
- Impurity testing using ICP-MS
- Microstructural characterization by XRD phase analysis
Thorough testing verifies powder quality and consistency for the intended high temperature application.
Comparison Between FeCoNiCrMn and Inconel 718 Powders
FeCoNiCrMn and Inconel 718 powders compared:
Parameter | FeCoNiCrMn | Inconel 718 |
---|---|---|
Sammansättning | High entropy alloy | Ni-Cr-Nb alloy |
Kostnad | Högre | Lägre |
High temperature strength | Much better | Very good up to 700°C |
Korrosionsbeständighet | Comparable | Comparable |
Användbarhet | Måttlig | Utmärkt |
Tillämpningar | Thermal spray, AM | Aerospace components, springs |
Tillgänglighet | Måttlig | Readily available |
FeCoNiCrMn offers superior high temperature strength, whereas Inconel 718 has better workability and availability.
FeCoNiCrMn Powder FAQs
Q: How is FeCoNiCrMn powder produced?
A: FeCoNiCrMn powder is commercially produced using gas atomization, water atomization and mechanical alloying followed by sintering. Gas atomization offers the best powder characteristics.
Q: What are the main applications for FeCoNiCrMn powder?
A: Main applications include additive manufacturing, thermal spray coatings, brazing filler material, high temperature welding, powder metallurgy hot work tooling where exceptional high temperature strength is needed.
Q: What is the recommended particle size for thermal spraying?
A: For most thermal spray processes, a particle size range of 45-150 microns is preferred for FeCoNiCrMn powder to maximize deposition efficiency and coating properties.
Q: Does FeCoNiCrMn powder require special handling precautions?
A: Yes, proper protective measures are essential when handling this reactive fine alloy powder including inert atmosphere, grounding, ventilation, PPE.
Q: Where can I buy FeCoNiCrMn powder suitable for additive manufacturing?
A: For AM applications requiring high temperature strength, fine FeCoNiCrMn powder can be purchased from leading manufacturers including Sandvik, Erasteel, Tekna, and Edgetech Industries.
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