Rene 88DT Alloy Powder Description
Rene 88DT Alloy Powder was developed to be more damage tolerant than Rene’ 95, hence the DT designation, while offering improved creep strength and fatigue crack growth resistance. The production alloy is always processed through the powder metallurgy route. The standard heat treatment consists of: a super-solvus solution of 1.0 hr at 1150°C (2100), followed by a delayed oil quench, and aging for 8.0 hr at 760°C (14OO). Its main structural characteristics are thus a fine grain size, achieved through PM consolidation, and a duplex distribution of, the coarser forming on cooling from the super solvus solution, the finer predominantly on aging. Rene 88DT is used in disk applications in advanced General Electric Co. engines.
Rene 88DT Alloy Powder Specification
Product Name
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Rene 88DT Alloy Powder
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Alloy Grade
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FGH 4096
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Related Grades
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Rene 88DT
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Composition
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C 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 Bal
Nb 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
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Size Grades
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-105+45micron
-53+15micron
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ASTM
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/
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AMS Specification
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/
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Rene 88DT Alloy Powder Applications
- Aerospace Industry: Rene alloys are often used in the manufacturing of critical components in aircraft engines and gas turbines.
- Power Generation: Due to their high-temperature strength and corrosion resistance, Rene alloys may find applications in power generation systems, particularly in components exposed to extreme conditions, such as turbine components in gas or steam turbines.
- Chemical Processing: The corrosion resistance of Rene alloys makes them suitable for use in aggressive chemical environments, making them potential candidates for chemical processing equipment.
- Automotive Industry: In some high-performance and racing applications, superalloys like Rene alloys might be used for components subjected to extreme heat and stress, such as exhaust systems.
Reference
S. T. Wlodek, M. Kelly and D. A. Alden: THE STRUCTURE OF RENE’ 88 DT. DOI:10.7449/1996/Superalloys_1996_129_136