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Displaying 126 - 150 of 1456

Additive Manufacturing of 17-4 PH Stainless Steel: Post Processing Heat Treatment to Achieve Uniform Reproducible Microstructure

December 21, 2015
Author(s)
Sudha Cheruvathur, Eric Lass, Carelyn E. Campbell
… 17-4 precipitation hardenable (PH) stainless steel is a useful material when a combination of high … up to about 315 °C is required. In the wrought form this steel has a fully martensitic structure that can be … employed in industry for post processing of AM 17-4 PH steel is found to have little effect on the as-built, …

Finite element analysis of the lateral capacity of cold-formed steel shear walls after fire exposure

December 9, 2021
Author(s)
Shuna Ni, Xia Yan, Matthew Hoehler, Thomas Gernay
… Cold-formed-steel construction frequently relies on strap-braced, cold-formed-steel framed walls as the lateral-force resisting system. … analyze the thermal and structural response of cold-formed-steel walls when subjected sequentially to fire and lateral … Shear walls, Cold-formed steel, Fire, Strap bracing, Lateral resistance, Numerical …

FDS-FEM Simulation Method and Its Application to Model Localized Fire Tests on Steel Members

June 8, 2016
Author(s)
Chao Zhang
… fire tests reported in literature. Localized fire tests on steel columns and on ceiling steel beams were simulated using the FDS-FEM method. The … get the temperature and structural responses of the tested steel beams and steel columns. … temperature, Finite element simulation, Localized fires, Steel column, Steel beam, Validation study …

DETAILED SUMMARY OF CHARACTERISTICS AND ATTRIBUTES OF API STEEL INTENDED FOR GASEOUS HYDROGEN PIPELINE SERVICE

September 15, 2022
Author(s)
Andrew Slifka, Douglas Stalheim, Chris San Marchi, Joseph Ronevich, Jim Campbell
… by various mechanisms of corrosion and pressure into steel and degrade the mechanical properties through … fracture, hydrogen, hydrogen embrittlement, pipeline steel … DETAILED SUMMARY OF CHARACTERISTICS AND ATTRIBUTES OF API STEEL INTENDED FOR GASEOUS HYDROGEN PIPELINE SERVICE …

Structural Investigation of the "Tripled-Tetragonal-Tungsten-Bronze" Phases Sr2M10-xO27-y (M = Nb, Ta)

September 15, 2019
Author(s)
Justin B. Felder, Winnie Wong-Ng, Rania A. Qabbani, Brian H. Toby, Julia Chan
… and Sr2Ta10-xO27-y exhibit the tripled tetragonal-tungsten-bronze (TTTB)-related superstructures. In contrast … Tripled tetragonal-tungsten-bronze (TTTB), X-ray and neutron diffraction, … Structural Investigation of the "Tripled-Tetragonal-Tungsten-Bronze" Phases Sr2M10-xO27-y (M = Nb, Ta) …

Dynamic Apparatus for the CTOA Measurement in Pipeline Steels

August 1, 2008
Author(s)
Avigdor Shtechman, Christopher N. McCowan, Roni Reuven, Elizabeth S. Drexler, Philippe P. Darcis, John M. Treinen, R. Smith, J. Merritt, Thomas A. Siewert, Joseph D. McColskey
… toughness. Recent articles written on the CTOA of pipeline steels at quasi-static rates using modified double cantilever … are observed at the highest rates tested for X65 and X100 steels. Maximum crack speeds approaching 10 m/s were recorded … CTOA, and present initial results on X65 and X100 pipeline steels. …

Low-Cycle Fatigue Behavior of Fiber-Laser Welded, Corrosion-Resistant, High-Strength Low Alloy Sheet Steel

February 21, 2017
Author(s)
Jeffrey W. Sowards, Erik A. Pfeif, Matthew J. Connolly, Joseph D. McColskey, Stephanie L. Miller, Brian J. Simonds, James R. Fekete
… of the previous fatigue work on fiber laser welded sheet steel has focused on stress-controlled fatigue testing. … procedure for butt welds of high-strength low-alloy steel sheet, and subsequent fully-reversed, strain-controlled … fiber laser beam welding, high strength low alloy steel, low cycle fatigue, microstructure- property …

Behavior and Performance of Amorphous and Nanocrystalline Metals in Ballistic Impacts

September 1, 2000
Author(s)
L S. Magness, L Kesckes, M Chung, D Kapoor, Frank S. Biancaniello, Stephen D. Ridder
… armor penetration capability when compared to conventional tungsten heavy alloys. Both amorphous and nanocrystalline … with an amorphous metal alloy and a nanocrystalline tungsten-based composite. Penetration performances and the … metal, depleted uranium, nanocrystalline, penetrator, tungsten heavy alloy …

Hydrogen traps in the outgassing model of a stainless steel vacuum chamber

March 31, 2014
Author(s)
Robert F. Berg
… describes a model for hydrogen outgassing into a stainless steel vacuum chamber. It accounts for the geometry of the … used to describe diffusion and recombination in stainless steel types 304 and 316 [Grant et al., J. Nuclear Materials … ignored in components made from vacuum remelted stainless steel. The simple model was developed and validated by …

Experimental Study on Fire Resistance of a Full-Scale Composite Floor Assembly in a Two-Story Steel Framed Building

October 7, 2021
Author(s)
Lisa Choe, Selvarajah Ramesh, Xu Dai, Matthew Hoehler, Matthew Bundy
… of four planned fire experiments on the 9.1 m × 6.1 m steel composite floor assembly as part of the two-story steel framed building constructed at the National Fire … was aimed to quantify the fire resistance and behavior of steel-concrete composite floor systems commonly built in the …

Elastic and Anelastic Properties of a Copper-Precipited Alloy Steel

October 16, 2008
Author(s)
H M. Ledbetter, Sung Kim, H Ogi
… We studied the elastic and anelastic properties of an alloy steel containing 1.1 mass % copper subjected to various isothermal agings. The steel's hardness increases with aging time; after reaching a … clusters, coefficients, elastic-stiffness, ferritic steel, hardness, high-strength low-alloy steel, internal …

In Situ Raman Spectroscopic Investigation of Stainless Steel Hydrothermal Corrosion

September 1, 2002
Author(s)
James E. Maslar, Wilbur S. Hurst, Walter J. Bowers Jr., Jay H. Hendricks
… was employed to investigate corrosion of 304L stainless steel in air-saturated water at a pressure of 25.2 Mpa and … up to 496 C in an optically accessible flow cell. The steel also was characterized ex situ with Raman spectroscopy … and scanning electron microscopy. After exposure, the steel surface consisted of a NiFe 2 O 4 film with an …

Contemporaneous Structural Steel Specifications. Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST NCSTAR 1-3A) ***DRAFT for Public Comments***

September 1, 2005
Author(s)
William E. Luecke, Thomas A. Siewert, Frank W. Gayle
… This report reviews the contemporaneous (1960s era) steel and welding standards used to construct the 110-story … WTC investigation. Although ASTM International structural steel standards have evolved since the towers were built, the … fire safety, fire investigations, terrorists, terrorism, steel structures, specifications, steels, standards, …

Micro-Mechanic Model for Cathodic Blister growth in Painted Steel

August 1, 1999
Author(s)
Tze J. Chuang, Tinh Nguyen, S K. Lee
… a coating system consisting of a polymer film applied to a steel substrate exposed to salt solutions. The mechanism of … favorably with experimental observations on a paint coated steel panel immersed in a five percent salt water solution. … which should help to design better protective coatings for steel. …

Investigation of the fracture resistance of high strength ferritic steel welds in gaseous hydrogen environment

April 22, 2024
Author(s)
Paolo Bortot, Matteo Ortolani, Michele Sileo, Erick Escorza, Matthew Connolly, Zack Buck, Ashwini Chandra
… and weld metal on a high strength, quenched and tempered steel, suitable for the construction of hydrogen pressure … metal arc welding technique on a weldable, high strength steel, namely EN 101216-3 grade P690 QL2. Two different … hydrogen gas, quenched and tempered ferritic steel, fracture toughness …

Nonlinear Ultrasonic Assessment of Precipitation Hardening in ASTM A710 Steel

September 1, 2000
Author(s)
Donna C. Hurley, Davor Balzar, P T. Purtscher
… We investigated several specimens of ASTM A710 steel containing copper-rich precipitates with variations in … nonlinear acoustics, precipitation hardening, steel, ultrasonic properties … Assessment of Precipitation Hardening in ASTM A710 Steel …

Evaluating a Natural Gas Pipeline Steel for Blended Hydrogen Service

March 19, 2022
Author(s)
May Ling Martin, Matthew Connolly, Zack Buck, Peter Bradley, Damian Lauria, Andrew Slifka
… An X70 natural gas pipeline steel that is being considered for blended natural … Hydrogen blending, hydrogen embrittlement, pipeline steel, fracture toughness, fatigue … Evaluating a Natural Gas Pipeline Steel for Blended Hydrogen Service …

Laser Welding of Dual-Phase Galvanized Sheet Steel

March 18, 2016
Author(s)
Stephanie L. Miller, Erik A. Pfeif, Andrei F. Kazakov, Esther Baumann, Marla L. Dowell
… laser welding, low-carbon steel … Laser Welding of Dual-Phase Galvanized Sheet Steel …
Displaying 126 - 150 of 1456
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