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Displaying 351 - 375 of 1456

Modeling the Fatigue Crack Growth of X100 Pipeline Steel in Gaseous Hydrogen

August 20, 2013
Author(s)
Robert L. Amaro, Neha N. Rustagi, Andrew J. Slifka, Elizabeth S. Drexler, Kip Findley
… crack propagation (FCP) model for API-5L X100 pipeline steel exposed to high-pressure gaseous hydrogen. The … contribute to fatigue crack propagation in pipeline steel in environments similar to those found in-service. … Modeling the Fatigue Crack Growth of X100 Pipeline Steel in Gaseous Hydrogen …

Strain-life performance in hydrogen of DOT pressure vessel steel

November 7, 2022
Author(s)
May Ling Martin, Peter Bradley, Damian Lauria, Robert L. Amaro, Matthew Connolly, Andrew Slifka
… Strain-life testing of a 4130 pressure vessel steel was conducted in air and in a high-pressure … data from testing of a higher strength pressure vessel steel is presented, showing a difference in elastic/plastic … Strain-life performance in hydrogen of DOT pressure vessel steel …

Cross-sectional stability of structural steel at elevated temperatures

April 19, 2012
Author(s)
Therese P. McAllister, Mina S. Seif
… fires. Current specifications for the design of steel structures in the US do not include fire effects as … using shell-elements to model the response of wide flange steel column sections to elevated temperatures. The … Cross-sectional stability of structural steel at elevated temperatures …

Thermal performance of composite slabs with profiled steel decking exposed to fire effects

February 5, 2018
Author(s)
Jian Jiang, Joseph Main, Jonathan Weigand, Fahim H. Sadek
… of heat transfer in composite floor slabs with profiled steel decking. The detailed modeling approach represents the concrete slab with solid elements and the steel decking with shell elements. After validating against … rather than the average temperature. The emissivity of steel has a significant influence on the temperature …

Slab Effects in SMRF Retrofit Connection Tests

March 1, 2001
Author(s)
S A. Civjan, M D. Engelhardt, John L. Gross
… dogbone and haunch retrofits for pre-Northridge steel moment connections. Tests included matched pairs of specimens, one bare steel and one including composite slab. Data were collected … design, earthquake engineering, frames, rehabilitation, steel …

Corrosion Fatigue Crack Initiation in Duplex Stainless Steel Paper Making Components

March 1, 1999
Author(s)
Mark R. Stoudt
… Sandusky International produced two duplex stainless steel alloys with very similar compositions and the … corrosion, corrosion fatigue, duplex stainless steel, fatigue crack propagation, papermaking, stress … Corrosion Fatigue Crack Initiation in Duplex Stainless Steel Paper Making Components …

Mechanical Properties of Austenitic Stainless Steel Made by Additive Manufacturing

October 10, 2014
Author(s)
John A. Slotwinski, William E. Luecke
… of the mechanical properties of an austenitic stainless steel, UNS S17400, manufactured by an additive process, … of the tensile properties of the UNS S17400 material steel are lower than mature engineering structural alloys, … from those of wrought, heat-treated 17-4PH stainless steel The large discontinuous yielding strain in all tests …

Improved Resistance to Hydrogen-Induced Cracking by Tempering of Intercritically Rolled Accelerated Cooled X65 Steel

March 1, 2023
Author(s)
Mary Kathleen O'Brien, Enrico Lucon, Donald Williamson, Kip Findley
… environments. In this study, an experimental X65 steel was produced by intercritically finish rolling, … in the as-received (AR) condition. Sections from the steel were also tempered at 300 C, 400 C, 500 C, and 600 … Tempering of Intercritically Rolled Accelerated Cooled X65 Steel …

Phase transformation dynamics guided alloy design for additive manufacturing

August 23, 2022
Author(s)
Qilin Guo, Minglei Qu, Chihpin Chuang, Lianghua Xiong, Ali Nabaa, Zachary Young, Yang Ren, Peter Kenesei, Fan Zhang, Lianyi Chen
… parts. Here we report a precipitation hardening stainless steel design guided by phase transformation dynamics revealed … high-resolution X-ray diffraction. This stainless steel consistently forms desired fully martensitic structure … additive manufacturing, stainless steel, nonequibrlium phase transition …

Design and Construction of Long-Span Composite Beam Specimens for Large Structural-Fire Tests

May 10, 2018
Author(s)
Selvarajah Ramesh, Lisa Choe, Matthew Hoehler, William L. Grosshandler, John L. Gross
… a 1.83 m wide lightweight concrete slab cast over profiled steel deck units. Composite action between the steel beam and concrete slab is achieved using 19 mm diameter steel shear connectors spaced at 305 mm on center. One of the … Steel-concrete composite beams, structural-fire testing, …

Modeling, Simulation and Prediction of Rockwell Hardness Indentation

February 1, 2004
Author(s)
Li Ma, Samuel R. Low III, Richard J. Fields, Roland deWit, Jun-Feng Song, Theodore V. Vorburger, J Zhou
… vary in shapes from one to another. A common problem with steel ball indenters is the tendency of the balls to flatten … which can result in erroneously elevated HR value. Either steel or tungsten carbide (WC) ball indenter is permitted to be used …

Modeling, Simulation and Prediction of Rockwell Hardness Indentation

January 1, 2001
Author(s)
Li Ma, J Zhou, Theodore V. Vorburger, R Dewit, Richard J. Fields, Samuel Low, Jun-Feng Song
… vary in shapes from one to another. A common problem with steel ball indenters is the tendency of the balls to flatten … which can result in erroneously elevated HR value. Either steel or tungsten carbide (WC) ball indenter is permitted to be used …

Priming Additively Manufactured Cobalt-free Maraging Steels for Improved Properties via Changes to As-Built Microstructure

July 23, 2025
Author(s)
Alec Saville, Jake Benzing, Fan Zhang, Joseph Aroh, Jordan Weaver, Russell Evans, Nicholas Derimow, Samantha Webster, Nikolas Hrabe, Cassidy Allen, Newell Moser, May Martin, Jason Holm, Christin Aumayr, Tilman Seifert, Michael Hirtler
… the development of new Co-free, Cr-containing maraging steels with several new alloys already commercialized. These … form of the currently used Co-containing maraging steels C300 and C350. However, Co-free, Cr-containing maraging steels exhibit reduced strengths after heat treatment …

Finish Hard Turning of Powder Metallurgy M50 Steel

January 1, 1997
Author(s)
Y K. Chou, Christopher J. Evans
… in turning of hardened powder metallurgy (PM) AISI M50 steel using cubic boron nitride (CBN) tools has been studied. … Finish Hard Turning of Powder Metallurgy M50 Steel …

Effects of mechanical deformation on dislocation density and phase partitioning in 4130 steel

August 22, 2023
Author(s)
Zachary Buck, Matthew Connolly, May Martin, Damian Lauria, Jason Killgore, Peter Bradley, Yan Chen, Ke An, Andrew Slifka
… tests were performed on an AISI 4130 pressure vessel steel and investigated by neutron diffraction and scanning … phase transformation from a predominately martensitic steel to a ferritic steel was observed, with the average martensite phase … on dislocation density and phase partitioning in 4130 steel …

Effects of powder recycling on stainless steel powder and built material properties in metal powder bed fusion processes

February 27, 2017
Author(s)
Gregor Jacob, Christopher U. Brown, M A. Donmez, Stephanie S. Watson
… and recycled nitrogen gas atomized S17-4 PH stainless steel powder following a specific powder recycling strategy … Precipitation Hardening Stainless Steel, Powder Bed Fusion, Martensite, Austenite, Powder … Effects of powder recycling on stainless steel powder and built material properties in metal powder …

Behavior of structural steel moment connections under fire loading

March 24, 2015
Author(s)
Mina S. Seif, Joseph Main, Fahim H. Sadek
… or local collapse. In this study, the performance of steel moment frames under fire-induced heating was … modeling. Models of two types of seismically designed steel moment frames were developed, including an intermediate … temperature-dependent material models for structural steel and bolts that incorporate erosion-based modeling of …
Displaying 351 - 375 of 1456
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