Author: Sidney O. Davis
Publisher:
ISBN:
Category : Steel alloys
Languages : en
Pages : 36
Book Description
A program was conducted to obtain complete stress versus number of cycles (S-N) curves for D6AC steel heat treated to an ultimate strength of 270 KSI. Tension-tension fatigue tests were conducted on notched and unnotched specimens at 75, 450, and 550 F for stress ratios of 1 and infinity. Tensile and stress rupture data were obtained in conjunction with the fatigue data.
Elevated Termperature Fatigue Properties of D6AC High Strength Steel
Author: Sidney O. Davis
Publisher:
ISBN:
Category : Steel alloys
Languages : en
Pages : 36
Book Description
A program was conducted to obtain complete stress versus number of cycles (S-N) curves for D6AC steel heat treated to an ultimate strength of 270 KSI. Tension-tension fatigue tests were conducted on notched and unnotched specimens at 75, 450, and 550 F for stress ratios of 1 and infinity. Tensile and stress rupture data were obtained in conjunction with the fatigue data.
Publisher:
ISBN:
Category : Steel alloys
Languages : en
Pages : 36
Book Description
A program was conducted to obtain complete stress versus number of cycles (S-N) curves for D6AC steel heat treated to an ultimate strength of 270 KSI. Tension-tension fatigue tests were conducted on notched and unnotched specimens at 75, 450, and 550 F for stress ratios of 1 and infinity. Tensile and stress rupture data were obtained in conjunction with the fatigue data.
Study of Fatigue Properties of Ultra-high Strength Steel
Author: Harvey B. Nudelman
Publisher:
ISBN:
Category : Steel
Languages : en
Pages : 74
Book Description
Publisher:
ISBN:
Category : Steel
Languages : en
Pages : 74
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1278
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1278
Book Description
Aerospace Structural Metals Handbook
Author:
Publisher:
ISBN:
Category : Alloys
Languages : en
Pages : 778
Book Description
Publisher:
ISBN:
Category : Alloys
Languages : en
Pages : 778
Book Description
Elevated Temperature Properties of Steels
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 34
Book Description
ASTM A723 and D6AC gun steels were evaluated for various high-temperature physical and mechanical properties, including specific heat, thermal expansion, stress relaxation, tensile, Young's modulus. and Poisson's ratio. Most tests were conducted at ambient temperature, 200 deg C, 300 deg C. and 400 deg C.A creep law was generated from the stress relaxation data that predicted the amount of creep strain at a given temperature as a function of stress and time. These data can be used, for example, to predict the amount of autofrettage stress lost at elevated temperatures and to establish safe gun tube service lives for various firing scenarios.
Publisher:
ISBN:
Category :
Languages : en
Pages : 34
Book Description
ASTM A723 and D6AC gun steels were evaluated for various high-temperature physical and mechanical properties, including specific heat, thermal expansion, stress relaxation, tensile, Young's modulus. and Poisson's ratio. Most tests were conducted at ambient temperature, 200 deg C, 300 deg C. and 400 deg C.A creep law was generated from the stress relaxation data that predicted the amount of creep strain at a given temperature as a function of stress and time. These data can be used, for example, to predict the amount of autofrettage stress lost at elevated temperatures and to establish safe gun tube service lives for various firing scenarios.
Elevated Temperature Fatigue Properties of Two Low Alloy Steels
Author: C. A. PENROSE
Publisher:
ISBN:
Category :
Languages : en
Pages : 1
Book Description
Two low alloy steels, heat treated to yield strengths approximating 175,000 and 150,000 psi, were fatigue tested under rotating beam conditions at temperatures of 70, 400, 600, 800 and 1000 F. The fatigue data is related to the tensile properties at various test temperatures. Temper embrittlement, occurring during the course of fatigue testing and its effect on the fatigue properties, is also demonstrated. For the steels investigated, the elevated temperature tensile properties appear to be good predictors of elevated temperature fatigue behavior. However, the occurrence of a subcritical temperature phenomenon to which the specific steel is susceptible (such as temper embrittlement) will affect the fatigue behavior and destroy its fatigue-tensile relationship. (Author).
Publisher:
ISBN:
Category :
Languages : en
Pages : 1
Book Description
Two low alloy steels, heat treated to yield strengths approximating 175,000 and 150,000 psi, were fatigue tested under rotating beam conditions at temperatures of 70, 400, 600, 800 and 1000 F. The fatigue data is related to the tensile properties at various test temperatures. Temper embrittlement, occurring during the course of fatigue testing and its effect on the fatigue properties, is also demonstrated. For the steels investigated, the elevated temperature tensile properties appear to be good predictors of elevated temperature fatigue behavior. However, the occurrence of a subcritical temperature phenomenon to which the specific steel is susceptible (such as temper embrittlement) will affect the fatigue behavior and destroy its fatigue-tensile relationship. (Author).
Investigation of Fatigue Properties at Room Temperature of High Strength Steels Having High Tempering Temperatures
Author: Harold N. Cummings
Publisher:
ISBN:
Category : Steel
Languages : en
Pages : 95
Book Description
Publisher:
ISBN:
Category : Steel
Languages : en
Pages : 95
Book Description
U.S. Government Research Reports
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1600
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1600
Book Description
High Temperature Fatigue
Author: R.P. Skelton
Publisher: Springer Science & Business Media
ISBN: 940093453X
Category : Technology & Engineering
Languages : en
Pages : 330
Book Description
About 35 years ago, thermal fatigue was identified as an important phenomenon which limited the lifetime of high temperature plant. In the intervening years many investigations have been carried out, primarily to give guidance on likely endurance (especially in the presence of time dependent deformation) but latterly, with the introduction of sophisticated testing machines, to provide knowledge of the underlying mechanisms of failure. A previous edited book (Fatigue at High Temperature, Elsevier Applied Science Publishers, 1983) summarised the state-of-the-art of high temperature fatigue testing and examined the factors influencing life, such as stress state, environment and microstructural effects. It also considered, in some detail, cyclic crack growth as a more rigorous approach to life limitation. The aim of the present volume (which in style and format follows exactly the same lines as its predecessor) is once again to pursue the desire to translate detailed laboratory knowledge into engineering design and assessment. There is, for example, a need to consider the limitations of the laboratory specimen and its relationship with engineering features. Many design procedures still rely on a simple endurance approach based on failure of a smooth specimen, and this is taken to indicate crack initiation in the component. In this volume, therefore, crack propagation is covered only incidentally, emphasis being placed instead on basic cyclic stress strain properties, non-isothermal behaviour, metallography, failure criteria and the need for agreed testing procedures.
Publisher: Springer Science & Business Media
ISBN: 940093453X
Category : Technology & Engineering
Languages : en
Pages : 330
Book Description
About 35 years ago, thermal fatigue was identified as an important phenomenon which limited the lifetime of high temperature plant. In the intervening years many investigations have been carried out, primarily to give guidance on likely endurance (especially in the presence of time dependent deformation) but latterly, with the introduction of sophisticated testing machines, to provide knowledge of the underlying mechanisms of failure. A previous edited book (Fatigue at High Temperature, Elsevier Applied Science Publishers, 1983) summarised the state-of-the-art of high temperature fatigue testing and examined the factors influencing life, such as stress state, environment and microstructural effects. It also considered, in some detail, cyclic crack growth as a more rigorous approach to life limitation. The aim of the present volume (which in style and format follows exactly the same lines as its predecessor) is once again to pursue the desire to translate detailed laboratory knowledge into engineering design and assessment. There is, for example, a need to consider the limitations of the laboratory specimen and its relationship with engineering features. Many design procedures still rely on a simple endurance approach based on failure of a smooth specimen, and this is taken to indicate crack initiation in the component. In this volume, therefore, crack propagation is covered only incidentally, emphasis being placed instead on basic cyclic stress strain properties, non-isothermal behaviour, metallography, failure criteria and the need for agreed testing procedures.
Technical Abstract Bulletin
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 912
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 912
Book Description