Creep, Rupture, and Notch Sensitivity Properties of S-816 Alloy up To 1650 F Under Fatigue and Static Stress

2009 ◽  
pp. 69-69-21 ◽  
Author(s):  
F. Vitovec ◽  
B. J. Lazan
Keyword(s):  
Creep Rupture ◽  
Static Stress ◽  
Notch Sensitivity

Sensitivity of the Creep-Rupture Properties of Waspaloy Sheet to Sharp-Edged Notches in the Temperature Range 1000–1400 Deg F

1972 ◽  
Vol 94 (1) ◽  
pp. 13-21 ◽  
Author(s):  
D. J. Wilson
Keyword(s):  
Necessary Conditions ◽  
Rupture Life ◽  
Creep Rupture ◽  
Optimum Combination ◽  
Time Dependent ◽  
Notch Sensitivity ◽  
Notched Specimen ◽  
Solution Treated ◽  
Material Solution ◽  
Rupture Properties

Time-dependent notch sensitivity of Waspaloy was observed at test temperatures from 1000 to 1300 deg F. Its occurrence in this range was dependent on the heat treatment. “Overaging” eliminated the notch sensitivity. Optimum combination of smooth and notched specimen strengths for material solution treated at 1975 deg F were obtained by aging 24 hr at 1550 deg F. Necessary conditions for time-dependent notch sensitivity were (i) the notch specimen loads had to be below the approximate 0.2 percent off set yield strength; and (ii) test data from smooth specimens had to indicate that small amounts of creep used up large fractions of creep-rupture life. No reasons were evident why these criteria will not prove applicable to other alloys.

Tensile Creep of Y-Si3N4: II. Cavitation

1991 ◽  
Vol 49 ◽  
pp. 972-973 ◽  
Author(s):  
B. J. Hockey ◽  
S. M. Wiederhorn
Keyword(s):  
Silicon Nitride ◽  
Creep Rupture ◽  
Tensile Creep ◽  
Sintering Aids ◽  
Microstructural Changes

ATEM has been used to characterize three different silicon nitride materials after tensile creep in air at 1200 to 1400° C. In Part I, the microstructures and microstructural changes that occur during testing were described, and consistent with that description the designations and sintering aids for these materials were: W/YAS, a SiC whisker reinforced Si3N4 processed with yttria (6w/o) and alumina (1.5w/o); YAS, Si3N4 processed with yttria (6 w/o) and alumina (1.5w/o); and YS, Si3N4 processed with yttria (4.0 w/o). This paper, Part II, addresses the interfacial cavitation processes that occur in these materials and which are ultimately responsible for creep rupture.

Study on Creep Rupture Test

1960 ◽  
Vol 46 (9) ◽  
pp. 982-987
Author(s):  
Ryuichi Nakagawa ◽  
Yasuo Otoguro
Keyword(s):  
Creep Rupture ◽  
Creep Rupture Test

KUBOTA ALLOY KHR35C

Alloy Digest ◽  
1999 ◽  
Vol 48 (7) ◽  
Keyword(s):  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Rupture Strength ◽  
Creep Rupture ◽  
Creep Rupture Strength ◽  
Temperature Performance

Abstract Kubota alloy KHR35C is similar to HP alloy with the addition of niobium to increase its creep-rupture strength. Typical applications include components and assemblies for severe carburizing environments, such as ethylene pyrolysis coils. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance as well as casting and joining. Filing Code: SS-753. Producer or source: Kubota Metal Corporation.

WISCALLOY 25-35Nb

Alloy Digest ◽  
1996 ◽  
Vol 45 (9) ◽  
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Creep Rupture ◽  
Centrifugally Cast ◽  
Heat Resistant ◽  
Rupture Properties

Abstract Wiscalloy 25-35Nb is a high-temperature cast heat-resistant stainless steel with good creep-rupture properties. The alloy is centrifugally cast and is often used as petrochemical furnace tubing. This datasheet provides information on composition, physical properties, and tensile properties as well as creep. It also includes information on casting and joining. Filing Code: SS-654. Producer or source: Wisconsin Centrifugal.

scholarly journals Effect of Static Stress on Plane Strain Vibrations in Poroelastic Solid Cylinder

2015 ◽  
Vol 127 ◽  
pp. 727-734
Author(s):  
Rajitha Gurijala ◽  
Malla Reddy Perati
Keyword(s):  
Plane Strain ◽  
Static Stress ◽  
Solid Cylinder
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