Bột Titanium Ti64eli là một vật liệu kỹ thuật quan trọng được sử dụng trong các ngành công nghiệp khác nhau do các đặc tính và đặc điểm độc đáo của nó. Bài viết này cung cấp một cái nhìn tổng quan về kỹ thuật toàn diện về bột Titanium Ti64eli bao gồm các thành phần, tính chất, ứng dụng, thông số kỹ thuật, giá cả, lợi thế và hạn chế của nó.
Overview of Titanium Ti64ELI Powder
Titanium Ti64ELI powder, also known as Titanium 6Al-4V ELI powder, is a titanium alloy containing aluminum and vanadium as alloying elements. It has excellent strength-to-weight ratio, fatigue resistance, fracture toughness, and corrosion resistance. Ti64ELI powder is the extra-low interstitial variant of Ti64 with lower levels of oxygen, nitrogen, carbon, and iron.
Ti64ELI is used for additive manufacturing, metal injection molding, hot and cold isostatic pressing, and other powder metallurgy processes. It can be 3D printed into fully dense, complex parts with fine microstructures and mechanical properties comparable to wrought Ti64 products. Ti64ELI’s combination of light weight, strength, and corrosion resistance make it suitable for aerospace, medical, dental, sporting goods, automotive, and marine applications.
Some key features of Titanium Ti64ELI powder include:
- Khả năng tương thích sinh học và osseointegration tuyệt vời
- Ability to 3D print intricate geometries not possible with casting/machining
- Consistent composition and microstructure in 3D printed parts
- Sức mạnh mệt mỏi tốt và độ dẻo dai
- Lower interstitial elements than Ti64 for superior ductility
- Compatibility with hot isostatic pressing (HIP) and heat treatments
- Conformance to ASTM standards for chemistry and particle size
Composition of Titanium Ti64ELI Powder
The typical chemical composition of titanium Ti64ELI powder is:
| Yếu tố | Cân nặng % |
|---|---|
| Titanium (TI) | Sự cân bằng |
| Nhôm (AL) | 5.5-6.75% |
| Vanadi (V) | 3.5-4.5% |
| Oxy (O) | ≤ 0.13% |
| Nitơ (N) | ≤ 0.05% |
| Carbon (c) | ≤ 0.08% |
| Sắt (Fe) | ≤ 0.25% |
The key alloying elements are aluminum and vanadium. Aluminum increases strength and decreases density. Vanadium improves strength and ductility. The low interstitial elements oxygen, nitrogen and carbon in Ti64ELI give it better ductility compared to Ti64.
Properties of Titanium Ti64ELI Powder
Titanium Ti64ELI powder has the following properties:
| Tài sản | Giá trị |
|---|---|
| Tỉ trọng | 4.43 g/cm3 |
| Độ nóng chảy | 1604-1660 ° C. |
| Dẫn nhiệt | 6,7 w/m-k |
| Điện trở suất | 170 μω-cm |
| Mô -đun Young ’ | 114 GPa |
| Sức căng | 895-930 MPa |
| Sức mạnh năng suất | 825-875 MPa |
| Kéo dài | 10-15% |
| Tỷ lệ của Poisson | 0.32-0.34 |
| Sức mạnh mệt mỏi | 400 MPa |
Key highlights:
- Mật độ thấp so với thép
- Retains strength and toughness at cryogenic temperatures
- Stronger than commercially pure titanium
- Lower ductility than wrought Ti64 but sufficient for most applications
- Excellent corrosion resistance due to stable protective oxide layer
Applications of Titanium Ti64ELI Powder
Titanium Ti64ELI powder is used to manufacture parts for the following applications:
Không gian vũ trụ: Engine components, airframes, turbines, fasteners, gears, hydraulic systems
Medical and Dental: Orthopedic implants, prosthetics, surgical instruments, dental implants
Ô tô: Valves, connecting rods, racing car components
Marine: Propellers, pumps, shafts, pipes, fittings
Chemical: Heat exchangers, valves, pipes for handling corrosive chemicals
Sporting Goods: Golf clubs, bicycle frames, tennis rackets, lacrosse sticks
Sản xuất phụ gia: 3D printed parts for aerospace, automotive, and medical sectors
Ti64ELI is preferred over Ti64 in AM due to lower interstitial elements that cause embrittlement in 3D printed Ti64 parts. It also has high biocompatibility for medical implants.
Specifications of Titanium Ti64ELI Powder
Titanium Ti64ELI powder is available in the following specifications:
| Tham số | Details |
|---|---|
| Kích thước hạt | 15-45 micron |
| Phương pháp sản xuât | nguyên tử hóa khí |
| Hình dạng hạt | Hình cầu |
| Phân bố kích thước | D10: 20 microns, D50: 35 microns, D90: 40 microns |
| Mật độ rõ ràng | ~2.2 g/cc |
| Chạm vào mật độ | ~3.2 g/cc |
| Khả năng chảy | Xuất sắc |
| Tiêu chuẩn | ASTM B348 Grade 23 |
Larger particle sizes of 63-106 microns can be custom produced based on application requirements. Finer particle sizes are available for metal injection molding feedstock.
Suppliers and Pricing of Titanium Ti64ELI Powder
Some of the major suppliers and pricing details for titanium Ti64ELI powder include:
| Nhà cung cấp | Prices |
|---|---|
| Ap & amp; c | $88/kg for orders >1000 kg |
| ARK BY | $75/kg for orders >500 kg |
| TLS Technik | €100/kg for orders >100 kg |
| Công nghệ LPW | £70-90/kg for orders >100 kg |
| Bột CNPC | $80-100/kg for >100 kg |
Prices vary from $70-100 per kg based on order quantity, particle size distribution, and location. Small quantity and research samples can cost over $500/kg.
Comparison Between Titanium Ti64 and Ti64ELI Powders
Here is a comparison between Ti64ELI and Ti64 titanium alloys:
| Tham số | Ti64ELI | Ti64 |
|---|---|---|
| Interstitial O, C, N | Thấp hơn | Cao hơn |
| Độ dẻo | Cao hơn | Thấp hơn |
| Độ dẻo dai | Tốt hơn | Nghèo |
| Khả năng hàn | Xuất sắc | Vừa phải |
| Chống ăn mòn | Có thể so sánh | Có thể so sánh |
| Sức mạnh | Có thể so sánh | Có thể so sánh |
| Trị giá | Cao hơn | Thấp hơn |
| AM suitability | Xuất sắc | Vừa phải |
Advantages of Ti64ELI over Ti64:
- Độ dẻo tốt hơn và độ bền gãy xương
- Lower tendency to crack during additive manufacturing
- Can be heat treated to higher strength levels
- More resistant to hydrogen absorption and embrittlement
Limitations of Ti64ELI vs Ti64:
- Higher cost due to raw material purity and processing
- Not recommended for high temperature applications over 300°C
- Less alloy development data available compared to Ti64
Pros and Cons of Titanium Ti64ELI Powder
Advantages:
- Tỷ lệ sức mạnh trên trọng lượng tuyệt vời
- Bio-inertness allows use for medical implants
- Withstands sterilization and autoclaving
- Chống lại sự ăn mòn trong môi trường khắc nghiệt
- Compatible with traditional and additive processes
- Heat treatable to tailor properties
- Can be plated for aesthetics and bonding
Disadvantages:
- More expensive than stainless steels and aluminum alloys
- Lower stiffness than steel, prone to springback
- Poor shear strength compared to steels
- Titanium dust poses fire hazard
- Difficult to machine due to low thermal conductivity
- Susceptible to galling and seizing during machining
- Surface treatments mandatory for adhesive bonding
- Requires inert gas shielding during AM and welding
Câu hỏi thường gặp
Q: What is the difference between Ti64ELI and Ti64?
A: Ti64ELI has lower interstitial oxygen, nitrogen and carbon compared to Ti64. This gives Ti64ELI better ductility and fracture toughness.
Q: What are the applications of Ti64ELI powder?
A: Key applications are aerospace components, medical implants, automotive parts, and 3D printing. It is widely used in industries where high strength, low weight and corrosion resistance are required.
Q: What particle size is used for AM?
A: Particle sizes of 15-45 microns are recommended for powder bed fusion AM processes like selective laser melting (SLM) and electron beam melting (EBM).
Q: What are the advantages of Ti64ELI over stainless steel?
A: Ti64ELI has higher strength-to-weight ratio, better corrosion resistance, and superior biocompatibility compared to stainless steels. However, Ti64ELI is also more expensive.
Q: What post-processing is required on Ti64ELI AM parts?
A: AM parts may need hot isostatic pressing (HIP), heat treatments, and machining to achieve the required dimensions, surface finish, and material properties.
Q: Can Ti64ELI parts be welded for repair or joining?
A: Yes, Ti64ELI has excellent weldability. Laser welding, electron beam welding, and arc welding can be used to weld Ti64ELI parts. Proper shielding is necessary to prevent oxidation.
Phần kết luận
In summary, titanium Ti64ELI powder offers an excellent combination of high strength, low weight, corrosion resistance, biocompatibility, processability, and heat treatability. Its applications span aerospace, medical, automotive, chemical, and consumer sectors. With additive manufacturing, complex Ti64ELI parts can be 3D printed directly from CAD data for on-demand production of lightweight structural components. However, Ti64ELI is costlier than Ti64 and challenging to machine. Overall, Ti64ELI presents capabilities beyond the limits of conventional titanium alloys.
