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March 1, 2006Journal of Propulsion and Power2,568 citationsOpen Access

Nickel-Based Superalloys for Advanced Turbine Engines: Chemistry, Microstructure and Properties

TPTresa M. PollockSTSammy Tin

Key Points

  • This review summarizes the chemistry, microstructure, and mechanical properties of nickel-based superalloys used in turbine engines.
  • Discussed major and minor alloying additions in multicomponent nickel-based superalloys.
  • Summarized microstructural stability and phases during processing and service.
  • Reviewed mechanical properties including tensile, creep, and fatigue characteristics.
  • Identified key factors affecting the microstructure and mechanical performance at elevated temperatures.
  • Outlined recent advancements in processing techniques that enhance the durability of superalloys.
  • Highlighted deformation mechanisms observed in nickel-based superalloys under stress.

Abstract

The chemical, physical, and mechanical characteristics of nickel-based superalloys are reviewed with emphasis on the use of this class of materials within turbine engines. The role of major and minor alloying additions in multicomponent commercial cast and wrought superalloys is discussed. Microstructural stability and phases observed during processing and in subsequent elevated-temperature service are summarized. Processing paths and recent advances in processing are addressed. Mechanical properties and deformation mechanisms are reviewed, including tensile properties, creep, fatigue, and cyclic crack growth. I.

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Cite This Study

Pollock et al. (2006) studied this question.

synapsesocial.com/papers/69dc355d1eeef32283c0fa7bhttps://doi.org/10.2514/1.18239
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