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DP2794 Rene 88DT Alloy Powder

Catalog No.DP2794
AppearanceGray metallic powder
GradeAlloy Grade: FGH 4095 Related Grades: Rene 88DT

TFM offers Rene 88DT Alloy Powder, expertly designed for use in 3D printing technologies. As the additive manufacturing sector evolves, TFM is committed to expanding and enhancing its range of powder products to meet the industry’s growing needs.

Overview of Rene 88DT Alloy Powder

Rene 88DT Alloy Powder is engineered to enhance damage tolerance compared to its predecessor, Rene’ 95, as indicated by the “DT” designation. This alloy boasts improved resistance to creep and fatigue crack growth. It is exclusively produced using powder metallurgy techniques, ensuring precise control over its properties. The standard heat treatment for Rene 88DT involves:

  • Super-Solvus Solution: 1 hour at 1150°C (2100°F), followed by a delayed oil quench.
  • Aging: 8 hours at 760°C (1400°F).

This process results in a fine grain structure due to powder metallurgy consolidation, with a duplex distribution of grain sizes. Coarser grains form during the cooling phase from the super-solvus solution, while finer grains develop during the aging process. Rene 88DT is primarily used in disk applications within advanced General Electric Co. engines.

Specifications of Rene 88DT Alloy Powder

Product NameRene 88DT Alloy Powder
Alloy GradeFGH 4096
Related GradesRene 88DT
CompositionC 0.02-0.05
Cr 15-16.5
Co 12.5-13.5
W 3.8-4.2
Mo 3.8-4.2
Al 2.0-2.4
Ti 3.5-3.9
Fe 0.5 max
Ni BalNb 0.6-1.0
Ta 0.02max
B 0.006-0.015
Zr 0.025-0.05
Ce 0.005-0.01
Si 0.2max
Mn 0.15max
P 0.015max
S 0.015max
Size Grades-105+45micron

-53+15micron

ASTM/
AMS Specification/

Applications and Benefits

Rene 88DT Alloy Powder is highly stable, making it suitable for prolonged use at temperatures up to 650°C (1200°F). Its enhanced properties stem from its high content and minimal positive mismatch, resulting in fine, coherent precipitation. The super-solvus annealing practice utilized ensures the removal of large sub-solvus phases, which are known to promote crack nucleation and disrupt the formation of serrated grain boundaries. Consequently, Rene 88DT’s microstructure lacks primary sub-solvus phases, with secondary and tertiary phases forming predominantly during aging.

This alloy’s unique characteristics and processing methods make it ideal for demanding applications, particularly in advanced turbine engines where high performance and reliability are critical.

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FAQ

  • Metal powders are fine particles of metals produced through various processes such as atomization, reduction, or electrolysis. They are used in applications like additive manufacturing, powder metallurgy, and coatings.

  • Alloy powders consist of two or more metallic elements combined to enhance properties like strength, corrosion resistance, and ductility, whereas pure metal powders contain only a single element.

  • The shape affects flowability, packing density, and spreadability. Spherical particles are preferred in additive manufacturing due to their superior flow characteristics.

  • Spherical powders are typically produced using gas atomization, where molten metal is atomized into fine droplets that solidify into spherical shapes.

  • Spherical powders offer better flowability and packing density, leading to improved layer uniformity and mechanical properties in 3D-printed components.

  • Factors include particle size distribution, shape, chemical composition, purity, and production method.

  • Yes, metal powders can pose hazards such as toxicity, reactivity, combustibility, and instability. Proper handling, storage, and safety protocols are essential.

  • In powder metallurgy, metal powders are compacted and sintered to produce components with complex shapes and tailored properties, often with minimal waste.

  • Yes, unused or excess metal powders from manufacturing processes can often be collected, sieved, and reused, provided they meet quality standards.

  • The combination of different metals in alloy powders can enhance properties such as strength, hardness, corrosion resistance, and thermal stability, depending on the application requirements.

  • Spherical alloy powders are used in aerospace, automotive, medical implants, and tooling industries for manufacturing high-performance components via additive manufacturing and powder metallurgy.

Production methods like gas atomization, water atomization, and mechanical milling influence particle size, shape, and purity, which in turn affect the performance of the powders in various applications.

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