Micromechanisms Of Low Cycle Fatigue In Nickel Based Superalloys At Elevated Temperatures

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Micromechanisms Of Low Cycle Fatigue In Nickel Based Superalloys At Elevated Temperatures

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Author : RM. Pelloux
language : en
Publisher:
Release Date : 1979

Micromechanisms Of Low Cycle Fatigue In Nickel Based Superalloys At Elevated Temperatures written by RM. Pelloux and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Elevated-temperature fatigue categories.

The micromechanisms of high-temperature fatigue crack initiation and crack propagation in solid-solution and precipitation-strengthened nickel-base super-alloys are reviewed. The marked decrease in fatigue strength of a given superalloy with increasing temperature cannot be solely correlated with the temperature dependence of the short-time mechanical properties. The interactions between oxidation rates and fatigue strengths are very complex. The air environment plays a large role in accelerating the initiation and propagation of fatigue cracks at elevated temperatures. Increasing temperature and decreasing frequency lead to a transition from transgranular to intergranular fracture path.

Fatigue Mechanisms

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Author : J. T. Fong
language : en
Publisher: ASTM International
Release Date : 1979

Fatigue Mechanisms written by J. T. Fong and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with categories.

Elevated Temperature Low Cycle Fatigue Of Nickel Base Superalloys In The Conventionally Cast Directionally Solidified And Single Crystal Forms

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Author : Stephen D. Antolovich
language : en
Publisher:
Release Date : 1983*

Elevated Temperature Low Cycle Fatigue Of Nickel Base Superalloys In The Conventionally Cast Directionally Solidified And Single Crystal Forms written by Stephen D. Antolovich and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983* with categories.

High temperature low cycle fatigue (LCF) has been studied for directionally solidified (DS) and conventionally cast (CC) Rene' 80. For the conventionally cast material testing was carried out on smooth bars over the temperature range 75 F (24 C) to 1800 F (982 C). It was found that at low temperatures slip was planar and carbides acted as crack initiation sites. In correspondence with the importance of carbides on the fatigue life it was found that life cosrrelated best with total strain range (as opposed to plastic strain range).

High Temperature Low Cycle Fatigue Mechanisms For A Nickel Base And A Copper Base Alloy

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Author : Chin-I. Shih
language : en
Publisher:
Release Date : 1982

High Temperature Low Cycle Fatigue Mechanisms For A Nickel Base And A Copper Base Alloy written by Chin-I. Shih and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Copper alloys categories.

A Model For Life Predictions Of Nickel Base Superalloys In High Temperature Low Cycle Fatigue

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Author : SD. Antolovich
language : en
Publisher:
Release Date : 1988

A Model For Life Predictions Of Nickel Base Superalloys In High Temperature Low Cycle Fatigue written by SD. Antolovich and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Environmental engineering categories.

Extensive characterization of low-cycle fatigue damage mechanisms was performed on polycrystalline René 80 and IN100 tested in the temperature range from 871 to 1000°C. Low-cycle fatigue life was found to be dominated by propagation of microcracks to a critical size governed by the maximum tensile stress. A model was developed which incorporates a threshold stress for crack extension, a stress-based crack growth expression, and a failure criterion. The mathematical equivalence between this mechanistically based model and the strain-life low-cycle fatigue law was demonstrated using cyclic stress-strain relationships. The model was shown to correlate the high-temperature low-cycle fatigue data of the different nickel-base superalloys considered in this study.

Aerospace Structural Metals Handbook

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Author :
language : en
Publisher:
Release Date : 1989

Aerospace Structural Metals Handbook written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Alloys categories.

Fatigue At High Temperature

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Author : R. P. Skelton
language : en
Publisher:
Release Date : 1983

Fatigue At High Temperature written by R. P. Skelton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Science categories.

The Fracture Morphology Of Nickel Base Superalloys Tested In Fatigue And Creep Fatigue At 650 C

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Author :
language : en
Publisher:
Release Date : 1981

The Fracture Morphology Of Nickel Base Superalloys Tested In Fatigue And Creep Fatigue At 650 C written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with categories.

Superalloys 2012

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Author : Eric S. Huron
language : en
Publisher: John Wiley & Sons
Release Date : 2012-10-02

Superalloys 2012 written by Eric S. Huron and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-10-02 with Technology & Engineering categories.

A superalloy, or high-performance alloy, is an alloy that exhibits excellent mechanical strength at high temperatures. Superalloy development has been driven primarily by the aerospace and power industries. This compilation of papers from the Twelfth International Symposium on Superalloys, held from September 9-13, 2012, offers the most recent technical information on this class of materials.

Nasa Technical Memorandum

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Author :
language : en
Publisher:
Release Date : 1988

Nasa Technical Memorandum written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Aeronautics categories.