Aluminium-cerium Master Alloy，Aluminium cerium Alloy，AlCe Alloy，E FORU

**Product Datasheet: Aluminium-Cerium Master Alloy (Al-Ce Alloy)** **Version:** 1.0 | **Date:** 2025-04-02 --- ### **1. General Overview** Aluminium-Cerium Master Alloy (Al-Ce Alloy) is an advanced material system gaining significant attention for its ability to enhance high-temperature performance, corrosion resistance, and castability of aluminium alloys. Cerium, as a rare earth element, forms thermally stable intermetallic compounds that improve properties at elevated temperatures while maintaining good ductility at room temperature. This alloy system is particularly promising for next-generation elevated temperature applications. --- ### **2. International Standards** Al-Ce master alloys are covered by emerging and established standards: - **ASTM:** ASTM E527 (Standard Practice for Numbering Metals and Alloys) - **AMS:** AMS 4494 (Al-Ce Alloy Castings) - **US DOE:** Critical Materials Institute specifications - **Typical Master Alloy Grades:** Al-10%Ce, Al-20%Ce, Al-30%Ce --- ### **3. Chemical Composition (Weight %)** Typical composition ranges for Al-Ce master alloy: | Element | Content (%) | Role & Remarks | |------------------|-------------------|------------------------------------------| | Cerium (Ce) | 5.0 – 30.0 | Primary alloying element | | Lanthanum (La) | 0 – 5.0 | Often present in mixed rare earth form | | Neodymium (Nd) | 0 – 3.0 | Additional rare earth element | | Iron (Fe) | ≤ 0.25 | Impurity control | | Silicon (Si) | ≤ 0.20 | Impurity control | | Other Impurities | ≤ 0.15 total | — | | Aluminium (Al) | Balance | Base metal | --- ### **4. Physical Properties** | Property | Value / Range | |---------------------------|-----------------------------------| | Density | 2.8 – 3.2 g/cm³ (varies with Ce content) | | Melting Range | 640 – 750°C | | Intermetallic Phases | Al₁₁Ce₃, Al₃Ce, Al₄Ce | | Thermal Stability | Excellent up to 400°C | | Thermal Conductivity | 100 – 150 W/m·K | | Electrical Conductivity | 35 – 45 % IACS | --- ### **5. Key Characteristics & Advantages** - **High-Temperature Strength:** Maintains mechanical properties up to 400°C - **Excellent Castability:** Improved fluidity and reduced hot tearing tendency - **Corrosion Resistance:** Enhanced resistance to atmospheric and chemical corrosion - **Thermal Stability:** Stable intermetallics resist coarsening at elevated temperatures - **Oxidation Resistance:** Forms protective oxide scales at high temperatures --- ### **6. Product Applications** - **Automotive:** Cylinder heads, pistons, turbocharger components - **Aerospace:** Engine components, high-temperature structural parts - **Additive Manufacturing:** Specialty powders for high-temperature 3D printing applications - **Electrical:** Rotors for high-temperature electric motors - **Heat Exchangers:** Components operating at elevated temperatures - **Energy:** Solar thermal receivers, heat storage components --- ### **7. Available Forms** - **Master Alloy:** Ingots, notch bars, granules - **Special Forms:** Powder for additive manufacturing, custom shapes - **Standard Sizes:** 5–15 kg ingots --- ### **8. Technical Guidelines for Use** - **Addition Rate:** 0.5–5.0% Ce to the melt (depending on application) - **Melt Temperature:** 720–780°C - **Holding Time:** 20–40 minutes with gentle stirring - **Casting Temperature:** 700–750°C for optimum results - **Heat Treatment:** Responds well to T5 and T6 temper treatments --- ### **9. High-Temperature Performance Comparison** | Alloy System | Max Service Temp (°C) | Strength Retention | Cost | Applications | |--------------|---------------------|-------------------|------|--------------| | **Al-Ce** | 400 | Excellent | Medium | Automotive, Aerospace | | **Al-Si** | 250 | Good | Low | General casting | | **Al-Cu** | 300 | Fair | Medium | Aerospace | | **Al-Ni** | 450 | Good | High | Special applications | --- ### **10. Metallurgical Mechanisms** - Forms fine, thermally stable Al₁₁Ce₃ intermetallic phases - Provides dispersion strengthening at elevated temperatures - Modifies silicon morphology in Al-Si alloys - Improves grain boundary stability - Enhances oxidation resistance through rare earth oxide formation --- ### **11. Health, Safety & Handling** - Generally low toxicity compared to other alloying elements - Use standard foundry personal protective equipment - Avoid inhalation of fine particles or fumes - Store in dry conditions to prevent surface oxidation - Follow standard industrial hygiene practices --- ### **12. Research & Development Status** - **Current Focus:** Development of high-cerium content alloys for additive manufacturing - **Emerging Applications:** Wind turbine components, power transmission lines - **Sustainability:** Cerium is more abundant and less expensive than other rare earths - **Alloy Development:** Ongoing research for optimized Ce-containing alloy systems --- ### **Disclaimer** This information is provided for technical reference only. Properties and performance may vary based on specific application conditions. The Al-Ce alloy system is still under development for many applications. Users are advised to conduct thorough trials to determine suitability for their specific processes. Always follow good foundry practices and safety guidelines. Consult with materials engineers for critical applications.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 2286 gallon liquid totes Special package is available on request.