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Title: Weibull Statistical Analysis of Tensile Fractures of PH17-4 Stainless Steel Castings.


Abstract not provided.

; ;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Resource Relation:
Conference: Proposed for presentation at the Materials Science and Technology 2015 held October 4-8, 2015 in Columbus, OH.
Country of Publication:
United States

Citation Formats

Susan, Donald F., Crenshaw, Thomas B., and Gearhart, Jhana Shaine. Weibull Statistical Analysis of Tensile Fractures of PH17-4 Stainless Steel Castings.. United States: N. p., 2015. Web.
Susan, Donald F., Crenshaw, Thomas B., & Gearhart, Jhana Shaine. Weibull Statistical Analysis of Tensile Fractures of PH17-4 Stainless Steel Castings.. United States.
Susan, Donald F., Crenshaw, Thomas B., and Gearhart, Jhana Shaine. 2015. "Weibull Statistical Analysis of Tensile Fractures of PH17-4 Stainless Steel Castings.". United States. doi:.
title = {Weibull Statistical Analysis of Tensile Fractures of PH17-4 Stainless Steel Castings.},
author = {Susan, Donald F. and Crenshaw, Thomas B. and Gearhart, Jhana Shaine},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2015,
month = 3

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  • Abstract not provided.
  • Tests were conducted to determine the minimum yield strength, 0.2% offset, of annealed 304 and 347 stainless steels as a function of temperature in the range 75 to 800 deg F. Considerable variations of yield strength were found and such variations appear to be directly related to the as-annealed hardness. Yield strength increases as hardness increases in a linear fashion for the hardness range examined. As-annealed hardness is the predominant yield strength controlling factor while carbon and silicon content are secondary controlling factors. Test data for use as a basis for other investigations and for background information are included. (J.R.D.)
  • The hot cracking susceptibility of some 300 series stainless steel welds can be minimized by the presence of a small amount of delta ferrite in the microstructure. The identification and location of the delta ferrite require a highly sensitive procedure. A similar challenge is involved in the resolution of strain-induced martensite. Hagnetic etching, which involves the use of an iron colloid solution in a controlled magnetic field, meets many of the demands for resolving these ferromagnetic features in the microstructure. The technique produces an analog pattern with the colloid that is observed in-situ with the conventionally etched microstructure and offersmore » high resolution analysis of the ferromagnetic delta ferrite and martensite in the paramagnetic austenitic matrix. The technique, which can be applied to the upper limit of the magnification of an optical metallograph, is described. 14 figs.« less
  • We have analyzed the tensile behavior of 11 heats of grades CF8-CPF8-304H and 13 heats of grades CF8M-CPF8M-316H static and centrifugal castings from room temperature to 650/sup 0/C. Except for anomalous conditions, the centrifugal castings exhibited uniform composition. All CPF8-304H centrifugal castings contained only radial columnar grains, but some CPF8M-316H castings had columnar, banded, or equiaxed structures. Ultimate tensile strength and total elongation were the properties in which castings showed the most inferiority to wrought material. With increasing ferrite content, 0.2% yield strength and ultimate tensile strength increased while uniform elongation, total elongation, and reduction of area decreased. Although centrifugalmore » castings did not exhibit significant end-to-end variation in tensile behavior, the 0.2% yield strength displayed anisotropy, with axial and circumferential values being greater than radial.« less
  • The available elevated-temperature, strain-controlled, uniaxial fatigue data on Type 304 stainless steel (435 data points) are summarized, and variables that influence cyclic life are divided into first- and second-order categories. The first-order variables, which include strain range, strain rate, temperature, and tensile hold time, were used in a multivariable regression analysis to describe the observed variation in fatigue life. Goodness of fit with respect to these variables as well as the appropriateness of the transformations employed are discussed. Confidence intervals are estimated, and a comparison with the ASME Boiler and Pressure Vessel Code Case 1592 creep-fatigue design curve is mademore » for a particular set of conditions. The second-order variables include the laboratories at which the data were generated, the different heats from which the test specimens were fabricated, and the heat treatments that preceded testing. These variables were statistically analyzed to determine their effect on fatigue life. The results are discussed, and the heats and heat treatments that are most resistant to fatigue damage under these loading and environmental conditions are identified.« less