Author: C. M. Hudson
Publisher:
ISBN:
Category : Airframes
Languages : en
Pages : 36
Book Description
Studies of Fatigue Crack Growth in Alloys Suitable for Elevated-temperature Applications
Author: C. M. Hudson
Publisher:
ISBN:
Category : Airframes
Languages : en
Pages : 36
Book Description
Publisher:
ISBN:
Category : Airframes
Languages : en
Pages : 36
Book Description
Studies of Fatigue Crack Growth in Alloys Suitable for Elevated-temperature Applications
Author: C. Michael Hudson
Publisher:
ISBN:
Category : Airframes
Languages : en
Pages : 0
Book Description
Publisher:
ISBN:
Category : Airframes
Languages : en
Pages : 0
Book Description
NASA Technical Note
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 332
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 332
Book Description
Fatigue-crack Propagation in Several Titanium and Stainless-steel Alloys and One Superalloy
Author: C. M. Hudson
Publisher:
ISBN:
Category : Materials at high temperatures
Languages : en
Pages : 40
Book Description
Publisher:
ISBN:
Category : Materials at high temperatures
Languages : en
Pages : 40
Book Description
Atmospheric Influence on Fatigue Crack Propagation in Titanium Alloys at Elevated Temperature
Author: S. Lesterlin
Publisher:
ISBN:
Category : Environment
Languages : en
Pages : 23
Book Description
The fatigue crack propagation behavior of a Ti-6Al-4V alloy has been investigated at room temperature and at 300°C. Tests were run in air, high vacuum, and some other environments with controlled partial pressure of water vapor and oxygen. The enhancement of the fatigue crack growth rates observed in air in comparison to high vacuum, considered as an inert environment, is clearly attributed to the presence of water vapor. Tests in a controlled environment demonstrate that very low partial pressure can accelerate crack propagation. On the basis of previous studies on Al alloys and steels, two controlling mechanisms are considered and discussed, namely, a propagation-assisted water vapor adsorption and a hydrogen-assisted propagation.
Publisher:
ISBN:
Category : Environment
Languages : en
Pages : 23
Book Description
The fatigue crack propagation behavior of a Ti-6Al-4V alloy has been investigated at room temperature and at 300°C. Tests were run in air, high vacuum, and some other environments with controlled partial pressure of water vapor and oxygen. The enhancement of the fatigue crack growth rates observed in air in comparison to high vacuum, considered as an inert environment, is clearly attributed to the presence of water vapor. Tests in a controlled environment demonstrate that very low partial pressure can accelerate crack propagation. On the basis of previous studies on Al alloys and steels, two controlling mechanisms are considered and discussed, namely, a propagation-assisted water vapor adsorption and a hydrogen-assisted propagation.
High Temperature Fatigue Crack Growth Behavior of Alloy 10
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
Elevated Temperature Effects on Fatigue and Fracture
Author: Robert S. Piascik
Publisher: ASTM International
ISBN: 0803124139
Category : Aluminum alloys
Languages : en
Pages : 231
Book Description
Publisher: ASTM International
ISBN: 0803124139
Category : Aluminum alloys
Languages : en
Pages : 231
Book Description
High temperature fatigue crack growth behavior of Alloy 10
Author: John Gayda
Publisher:
ISBN:
Category :
Languages : en
Pages : 14
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 14
Book Description
Fatigue Crack Propagation in Metals and Alloys
Author: Ulrich Krupp
Publisher: John Wiley & Sons
ISBN: 3527610677
Category : Technology & Engineering
Languages : en
Pages : 311
Book Description
This comprehensive overview of the whole field of fatigue and fracture of metallic materials covers both the theoretical background and some of the latest experimental techniques. It provides a summary of the complex interactions between material microstructure and cracks, classifying them with respect to the overall damage process with a focus on microstructurally short cracks and dynamic embrittlement. It furthermore introduces new concepts for the numerical treatment of fatigue microcrack propagation and their implementation in fatigue-life prediction models.This comprehensive overview of the whole field of fatigue and fracture of metallic materials covers both the theoretical background and the latest experimental techniques. It provides a summary of the complex interactions between material microstructure and cracks, classifying them with respect to the overall damage process. It furthermore introduces new concepts for the numerical treatment of fatigue microcrack propagation and their implementation in fatigue-life prediction models.
Publisher: John Wiley & Sons
ISBN: 3527610677
Category : Technology & Engineering
Languages : en
Pages : 311
Book Description
This comprehensive overview of the whole field of fatigue and fracture of metallic materials covers both the theoretical background and some of the latest experimental techniques. It provides a summary of the complex interactions between material microstructure and cracks, classifying them with respect to the overall damage process with a focus on microstructurally short cracks and dynamic embrittlement. It furthermore introduces new concepts for the numerical treatment of fatigue microcrack propagation and their implementation in fatigue-life prediction models.This comprehensive overview of the whole field of fatigue and fracture of metallic materials covers both the theoretical background and the latest experimental techniques. It provides a summary of the complex interactions between material microstructure and cracks, classifying them with respect to the overall damage process. It furthermore introduces new concepts for the numerical treatment of fatigue microcrack propagation and their implementation in fatigue-life prediction models.
High Temperature Fatigue Crack Growth Behavior of Alloy 10
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781721259212
Category :
Languages : en
Pages : 34
Book Description
Methods to improve the high temperature, dwell crack growth resistance of Alloy 10, a high strength, nickel-base disk alloy, were studied. Two approaches, heat treat variations and composition modifications, were investigated. Under the heat treat approach, solution temperature, cooling rates, and stabilization, were studied. It was found that higher solution temperatures, which promote coarser grain sizes, coupled with a 1550 F stabilization treatment were found to significantly reduce dwell crack growth rates at 1300 F Changes in the niobium and tantalum content were found to have a much smaller impact on crack growth behavior. Lowering the niobium:tantalum ratio did improve crack growth resistance and this effect was most pronounced for coarse grain microstructures. Based on these findings, a coarse grain microstructure for Alloy 10 appears to be the best option for improving dwell crack growth resistance, especially in the rim of a disk where temperatures can reach or exceed 1300 T. Further, the use of advanced processing technologies, which can produce a coarse grain rim and fine grain bore, would be the preferred option for Alloy 10 to obtain the optimal balance between tensile, creep, and crack growth requirements for small gas turbine engines. Gayda, John Glenn Research Center NASA/TM-2001-210814, E-12729, NAS 1.15:210814
Publisher: Createspace Independent Publishing Platform
ISBN: 9781721259212
Category :
Languages : en
Pages : 34
Book Description
Methods to improve the high temperature, dwell crack growth resistance of Alloy 10, a high strength, nickel-base disk alloy, were studied. Two approaches, heat treat variations and composition modifications, were investigated. Under the heat treat approach, solution temperature, cooling rates, and stabilization, were studied. It was found that higher solution temperatures, which promote coarser grain sizes, coupled with a 1550 F stabilization treatment were found to significantly reduce dwell crack growth rates at 1300 F Changes in the niobium and tantalum content were found to have a much smaller impact on crack growth behavior. Lowering the niobium:tantalum ratio did improve crack growth resistance and this effect was most pronounced for coarse grain microstructures. Based on these findings, a coarse grain microstructure for Alloy 10 appears to be the best option for improving dwell crack growth resistance, especially in the rim of a disk where temperatures can reach or exceed 1300 T. Further, the use of advanced processing technologies, which can produce a coarse grain rim and fine grain bore, would be the preferred option for Alloy 10 to obtain the optimal balance between tensile, creep, and crack growth requirements for small gas turbine engines. Gayda, John Glenn Research Center NASA/TM-2001-210814, E-12729, NAS 1.15:210814