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Turbine wheel incorporating nickel-based alloy

A technology for turbine impellers and nickel-based alloys, which can be used in gas turbine devices, mechanical equipment, engine components, etc., and can solve problems such as expensive and poor high-temperature performance

Pending Publication Date: 2020-03-27
盖瑞特动力科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing alloys for this application all suffer from various drawbacks: for example, the Mar-M-246 nickel-based alloy is relatively expensive, while the IN-713C nickel-based alloy exhibits poor high-temperature performance

Method used

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  • Turbine wheel incorporating nickel-based alloy
  • Turbine wheel incorporating nickel-based alloy
  • Turbine wheel incorporating nickel-based alloy

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Embodiment Construction

[0014] The following detailed description is merely exemplary in nature and is not intended to limit the invention or the application and uses of the invention. As used herein, the word "exemplary" means "serving as an example, instance, or illustration." Accordingly, any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. All embodiments described herein are exemplary embodiments provided to enable a person skilled in the art to make or use the invention and not to limit the scope of the invention as defined by the claims. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description.

[0015] Unless specifically stated or obvious from context, as used herein, the term "about" is understood as within a range of normal tolerance in the art, eg, within 2 standard deviations ...

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PUM

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Abstract

Turbocharger turbine wheels including nickel-based alloys are disclosed herein. In one exemplary embodiment, a turbocharger turbine wheel includes as, at least part of its constituency, a nickel-basedalloy that includes, on a weight basis of the overall alloy: about 10.5% to about 11.5% cobalt, about 9.0% to about 10.0% chromium, about 5.75% to about 6.25% aluminum, about 2.8% to about 3.3% tantalum, about 4.0% to about 4.5% molybdenum, about 2.2% to about 2.4% titanium, about 0.13% to about 0.15% carbon, about 0.03 to about 0.09% zirconium, and a majority of nickel. The nickel-based alloy excludes tungsten except in unavoidable trace amounts. The turbocharger turbine wheel may be configured for operating at about 980 DEG C to about 1020 DEG C.

Description

technical field [0001] The present disclosure generally relates to metal alloys with improved high temperature oxidation and fatigue resistance for turbocharger applications. More specifically, the present disclosure relates to nickel-based alloys and turbine wheels including nickel-based alloys. Background technique [0002] Turbine wheels, typically cast nickel-based alloys, used in turbochargers are high-speed rotating components that are exposed to high temperature combustion gases at temperatures between about 980°C and about 1020°C (depending on the application). In order to withstand such high temperatures, the nickel base alloy material should be resistant to oxidation and load fatigue when rotating in the range of about 200,000-300,000 RPM. Existing alloys for this application all suffer from various drawbacks: for example, the Mar-M-246 nickel-based alloy is relatively expensive, while the IN-713C nickel-based alloy exhibits poor high temperature performance. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/05F01D5/02
CPCC22C19/056F01D5/02C22C19/057F05D2300/175F05D2220/40F02C6/12F01D5/28F05D2300/13C22C2202/00F05D2300/608F05D2300/17F05D2300/5023F05D2300/518F05D2240/24
Inventor P.C.西塔拉姆劳M.威尔逊V.里肯科瓦M.J.莫里西
Owner 盖瑞特动力科技(上海)有限公司