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Topic Area: Metals
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Displaying records 21 to 30 of 59 records.
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21. Workshop on Quantitative Tools for Condition Assessment of Aging Infrastructure
Series: NIST Interagency/Internal Report (NISTIR)
Topic: Metals
Published: 10/14/2010
Authors: Ward L Johnson, Thomas Allen Siewert, Jessica Terry, Dat Duthinh, Mark A Iadicola, William E Luecke, Joseph David McColskey
Abstract: The Quantitative Tools for Condition Assessment of Aging Infrastructure Workshop was held May 4-5, 2010, in Boulder, Colorado. It was organized by a team of researchers within the National Institute of Standards and Technology s (NIST) Materials Scie ...

22. Peer Review Report 2010
Topic: Metals
Published: 9/22/2010
Authors: Thomas Allen Siewert, Robert Smith, Theresa Bell, Joseph David McColskey, Richard Joel Fields
Abstract: The Pipeline and Hazardous Materials Safety Administration s Pipeline Safety Research and Development (R&D) Program held a structured peer review of active research projects in April 2010. The peer review panel consisted of twelve government and ind ...

23. Magnetic Properties of Zr_(9)Ni_(11)Intermetallic Compound
Topic: Metals
Published: 2/7/2010
Authors: Virgil Provenzano, Robert D Shull, Richard Milton Waterstrat, Lawrence Herman Bennett, Edward Della Torre, H. Seyoum
Abstract: We report on a very interesting magnetic behavior in the intermetallic compound Zr_(9)Ni_(11), namely, (i) spin-glass behavior and (ii) fluctuations in magnetization versus temperature curves.  The magnetic properties are consistent with structu ...

24. Bending of a Bimetallic Beam due to the Kirkendall Effect
Topic: Metals
Published: 1/1/2010
Authors: William J Boettinger, Geoffrey B McFadden
Abstract: The time dependent bending of single phase and two phase bimetal strips due to interdiffusion is computed. The model couples simple beam theory and diffusion, the bending being due to the creation and /annihilation of vacancies necessitated by unequa ...

25. Tranformation Potential Predictions for the Stress Induced Austenite to Martensite Transformation in Steel
Topic: Metals
Published: 9/28/2009
Authors: Adam A Creuziger, Timothy J Foecke
Abstract: The stress induced transformation behavior of retained austenite is considered in this work. With the development of transformation induced plasticity (TRIP) steels this deformation mode is of growing importance. Twinned martensite structures were ca ...

26. An electrical pulse-heated Kosky bar technique for high strain rate flow stress measurements of rapidly heated metals
Topic: Metals
Published: 9/13/2009
Authors: Steven P Mates, Stephen W Banovic, Richard L. Rhorer, Timothy J Burns, Eric Paul Whitenton, D Basak
Abstract: We have developed a unique electrical pulse-heated Kolsky Bar technique for measuring the flow stress of metals at heating rates of up to 6000 °C per second and strain rates up to 10^4 per second. Under these conditions, which are approaching those f ...

27. The Fundamental Relationships Between Deformation-Induced Surface Roughness, Critical Strain Localization, and Failure in AA5754-O
Topic: Metals
Published: 9/1/2009
Authors: Mark R Stoudt, Joseph Bunton Hubbard
Abstract: The apparent clustering observed in localized strain maps constructed from deformation-induced surface topographies generated in AA5754-O by three in-plane deformation modes were analyzed by two different methods. One used a conventional two-point a ...

28. Frustrated magnetization reversal in Co/Pt multilayer films
Topic: Metals
Published: 7/13/2009
Authors: Joseph E. Davies, O Hellwig, Eric E. Fullerton, M. Winklhofer, Robert D Shull, Kai Liu
Abstract: The magnetization reversal behavior in Co/Pt multilayers with perpendicular anisotropy are studied by the first order reversal curve (FORC) method. In addition to the previously observed three stage reversal process where domains first nucleate, the ...

29. A Study of the Fundamental Relationships Between Deformation-Induced Surface Roughness and Strain Localization in AA5754
Topic: Metals
Published: 7/1/2009
Authors: Mark R Stoudt, Joseph Bunton Hubbard, Mark A Iadicola, Stephen W Banovic
Abstract: This research characterizes deformation-induced surface roughness produced by 3, in plane, proportional strain modes to determine the microstructural conditions that promote strain localization in AA5754-O aluminum alloy sheet. Integrating high-reso ...

30. Crack tip opening angle: applications and developments in the pipeline industry
Topic: Metals
Published: 7/1/2009
Authors: Elizabeth S Drexler, Philippe Darcis, Richard Joel Fields, Joseph David McColskey, Christopher N McCowan, Roni Reuven, Thomas Allen Siewert
Abstract: One of the most difficult safety problems associated with gas pipeline to be solved is the control of ductile fracture propagation. To address this issue, the crack tip opening angle (CTOA) criterion is becoming one of the more widely accepted proper ...

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