Microstructure of a Cast Age-Hardenable Nickel-Chromium Alloy

Decker, R. F.; Bieber, C.

doi:10.1520/stp43671s

Cited by 5 publications

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“…This limit is based on electron vacancy theory and is designated as (Nvl• They determined that a (Nv) of about 2.35 was a safe upper limit. Control of chemistry levels to this (Ny) limit has produced Udimet 700 alloy free of sigma-phase formation after exposure for 1500 hr at 1500 F. The original limit that was proposed by Boesch and Slaney has been somewhat modified by other investigators (2,3) and is currently receiving detailed treatment by Quigg and associates (4). Corrosion evaluation of superalloys has taken many forms and pertinent results of numerous investigators were presented at a corrosion symposium (5).…”

Section: Laboratory Evaluation Of High Strength Alloysmentioning

confidence: 99%

Metallurgical Development for Added Reliability of Industrial Gas Turbine Rotating Blades

Wall

1968

ASME 1968 Gas Turbine Conference and Products Show

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Increased reliability of industrial gas turbine rotating blades in the hot section of turbines has been achieved by utilization of advanced metallurgical techniques. These techniques include vacuum melting master alloy heats, minimizing residual stresses in blades after machining, and increasing the quality of nondestructive inspection of blades during and after fabrication. In addition, long time stress-rupture tests, corrosion evaluation, and microstructural studies on advanced alloys have provided necessary information for selection of turbine blade alloys for future generations of turbines.

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Section: Laboratory Evaluation Of High Strength Alloysmentioning

confidence: 99%

Metallurgical Development for Added Reliability of Industrial Gas Turbine Rotating Blades

Wall

1968

ASME 1968 Gas Turbine Conference and Products Show

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Carbide phases in nickel base superalloy: nucleation properties of MC type carbide

Youdelis¹,

Kwon²

1983

Metal Science

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The Development of Electron Microscopic Methods for the Study of Metals

Bigelow

1962

Symposium on Advances in Electron Metallography and Electron Probe Microanalysis

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Although the first electron microscopes were built in the early 1930's, electron microscopy did not become established as a widely used experimental method until after 1945 when reliable, refined commercial instruments became generally available. During the period from about 1945 to 1955, biological applications of electron microscopy greatly outnumbered nonbiological applications and exerted a dominating influence on developments in instrumentation and techniques. During the past few years, however, there has been a tremendous increase in the use of electron microscopy in nonbiological areas, and especially in metallurgy. This recent trend has begun to exert a strong influence on the general course of developments in the field of electron microscopy and is contributing much new and valuable information about the structures of metals. Subcommittee XI on Electron Microstructural Studies of Metals (of ASTM Committee E-4 on Metallography) has contributed actively to this progress in nonbiological applications of electron microscopy through its program of work on the development of techniques for electron microscopic studies of metals (1–8).

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Microstructure of a Cast Age-Hardenable Nickel-Chromium Alloy

Cited by 5 publications

References 0 publications

Metallurgical Development for Added Reliability of Industrial Gas Turbine Rotating Blades

Metallurgical Development for Added Reliability of Industrial Gas Turbine Rotating Blades

Carbide phases in nickel base superalloy: nucleation properties of MC type carbide

The Development of Electron Microscopic Methods for the Study of Metals

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