Titanium Alloy Ti64

Titanium alloys are revered for their impressive strength-to-weight ratios, exceptional corrosion resistance, and excellent biocompatibility. Among these alloys, Ti64, also known as titanium alloy Ti64, stands out due to its widespread applications and favorable properties. This article delves deep into the intricacies of Ti64, providing a detailed overview, exploring its composition, properties, applications, and various grades. Furthermore, we will compare different metal powder models, discuss the pros and cons, and address frequently asked questions about this remarkable alloy.

Overview of Titanium Alloy Ti64

Ti64 is a titanium alloy consisting of 6% aluminum and 4% vanadium. Its combination of light weight and high strength makes it a popular choice in aerospace, medical, and industrial applications. The alloy exhibits excellent mechanical properties, superior corrosion resistance, and good thermal stability, making it versatile and reliable for various demanding environments.

Composition of Titanium Alloy Ti64

The unique properties of Ti64 stem from its precise elemental composition. Here’s a closer look at what makes up this alloy:

องค์ประกอบComposition (%)
ไทเทเนียม90
อลูมิเนียม6
วาเนเดียม4
เหล็ก≤ 0.25
ออกซิเจน≤ 0.20
คาร์บอน≤ 0.08
ไนโตรเจน≤ 0.05
ไฮโดรเจน≤ 0.015
อื่นๆ≤ 0.40
titanium alloy Ti64

Properties of Titanium Alloy Ti64

Ti64 is renowned for its excellent mechanical properties. Here are some key characteristics:

ทรัพย์สินมูลค่า
ความหนาแน่น4.43 g/cm³
ความแข็งแรงเชิงดึง900 MPa (min)
จุดคราก830 MPa (min)
โมดูลัสของความยืดหยุ่น113.8 GPa
การยืด14%
ความแข็ง349 HV
จุดหลอมเหลว1604°C

Characteristics of Titanium Alloy Ti64

  • High Strength-to-Weight Ratio: Ti64 is strong yet lightweight, making it ideal for applications where weight savings are crucial.
  • Excellent Corrosion Resistance: The alloy resists corrosion in various environments, including marine and acidic conditions.
  • Good Thermal Stability: Ti64 maintains its properties at elevated temperatures, suitable for high-temperature applications.
  • Biocompatibility: Its non-toxic nature makes it suitable for medical implants and devices.
  • Workability: While machining can be challenging, it can be forged, welded, and heat-treated effectively.

Applications of Titanium Alloy Ti64

Ti64’s unique properties enable its use in a variety of fields. Here are some notable applications:

แอปพลิเคชันคำอธิบาย
อวกาศUsed in airframes, jet engines, and spacecraft due to its strength and lightweight nature.
Medical DevicesCommonly used for implants and prosthetics owing to its biocompatibility and corrosion resistance.
ยานยนต์Employed in high-performance vehicles for components like connecting rods and exhaust systems.
นาวิกโยธินSuitable for shipbuilding and offshore structures due to its resistance to seawater corrosion.
อุตสาหกรรมUsed in chemical processing plants and heat exchangers for its durability and corrosion resistance.

Specifications, Sizes, Grades, and Standards

Titanium alloy Ti64 is available in various grades and specifications to suit different applications. Here’s a summary:

เกรดสเปกSize Range (mm)มาตรฐาน
5Ti-6Al-4VSheets: 0.5-100ASTM B265, AMS 4911
23Ti-6Al-4V ELIBars: 10-400ASTM F136, ISO 5832-3
24Ti-6Al-4VPlates: 5-100ASTM B265, AMS 4907
35Ti-6Al-4VTubes: 10-200ASTM B337, ASTM B338
44Ti-6Al-4VForgings: 50-500AMS 4928, AMS 4967

Suppliers and Pricing Details

Finding a reliable supplier is crucial for procuring high-quality Ti64. Here’s a list of some notable suppliers and indicative pricing:

ซัพพลายเออร์ประเทศPrice Range (USD/kg)Contact
ATIสหรัฐอเมริกา100-200www.atimetals.com
VSMPO-AVISMARussia90-180www.vsmpo.ru
Baoji Titaniumประเทศจีน80-170www.baoji-titanium.com
Titanium IndustriesGlobal95-185www.titanium.com
TIMETสหรัฐอเมริกา105-195www.timet.com

Comparing Pros and Cons of Titanium Alloy Ti64

While Ti64 offers many benefits, it’s essential to weigh its advantages against its limitations:

Aspectข้อได้เปรียบข้อจำกัด
ความแข็งแรงอัตราความแข็งแรงต่อน้ำหนักที่สูงExpensive compared to other metals
ความต้านทานการกัดกร่อนExcellent in harsh environmentsRequires special machining techniques
เสถียรภาพของอุณหภูมิMaintains properties at high temperaturesProne to galling and wear without proper lubrication
ชีวสาระบรรจบSafe for medical implantsCan be challenging to weld
ความไม่ยืดหยุ่นVersatile in forming, forging, and heat-treatingLimited availability of high-grade material

Metal Powder Models for Titanium Alloy Ti64

Metal powders are essential for additive manufacturing and other powder metallurgy applications. Here are some specific models of Ti64 powder, each tailored for different uses:

  1. Ti64-G1: General-purpose powder with a wide particle size distribution suitable for various AM processes.
  2. Ti64-G2: Enhanced flowability and higher density, ideal for laser powder bed fusion.
  3. Ti64-HIP: Optimized for hot isostatic pressing, providing high density and mechanical properties.
  4. Ti64-SP: Spherical powder designed for selective laser sintering with excellent flow characteristics.
  5. Ti64-E: Electron beam melting powder with controlled oxygen content for high-performance applications.
  6. Ti64-FS: Fine spherical powder for binder jetting and cold spray applications.
  7. Ti64-AM: Customized for additive manufacturing with a narrow particle size range for consistent printing quality.
  8. Ti64-CP: Chemically pure powder suitable for medical implants requiring high biocompatibility.
  9. Ti64-HT: High-temperature grade for applications requiring enhanced thermal stability.
  10. Ti64-LF: Low-fluoride variant for aerospace applications requiring minimal contamination.

Advantages and Limitations Compared to Other Titanium Alloys

When compared to other titanium alloys, Ti64 stands out but also has some trade-offs:

Titanium AlloyAdvantages Over Ti64Limitations Compared to Ti64
Ti-3Al-2.5VBetter formability and weldabilityLower strength and thermal stability
Ti-5Al-2.5SnHigher temperature capabilitiesLess biocompatibility and workability
Ti-6Al-2Sn-4Zr-2MoSuperior high-temperature performanceHigher cost and lower availability
Ti-6Al-7NbBetter biocompatibilityLower strength
Ti-8Al-1Mo-1VExcellent high-temperature strengthMore difficult to process and machine
titanium alloy Ti64

คำถามพบบ่อย

To address common queries about Ti64, here’s a handy FAQ section:

QuestionAnswer
What makes Ti64 so popular in aerospace applications?Its high strength-to-weight ratio and excellent corrosion resistance make it ideal.
Is Ti64 suitable for medical implants?Yes, its biocompatibility and non-toxicity make it a preferred choice for implants.
How does Ti64 compare to pure titanium?Ti64 is stronger and more heat-resistant but slightly heavier than pure titanium.
Can Ti64 be welded easily?Welding Ti64 can be challenging and requires specific techniques to avoid contamination.
What are the main challenges in machining Ti64?Its hardness and tendency to gall require specialized tools and techniques.
Is Ti64 resistant to seawater corrosion?Yes, it exhibits excellent resistance to seawater corrosion, making it suitable for marine use.
How is Ti64 powder used in additive manufacturing?It is used in various processes like SLS, EBM, and laser powder bed fusion.
What is the typical price range for Ti64?Depending on the supplier and specifications, it ranges from $80 to $200 per kg.
Are there any environmental concerns with Ti64?The production process can be energy

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