WJ Supplements - 2001

RESEARCH PAPERS

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  • The Statistical Models for Estimating the Amount of Spatter in the Short Circuit Transfer Mode of GMAW
    A study to predict spatter correlated waveform activity to different welding conditions to develop four different models.
    BY M.J. Kang, et al.
    Published January 2001
  • Partially Melted Zone in Aluminum Welds: Solute Segregation and Mechanical Behavior
    The partially melted zone in gas metal arc welds of Alloy 2219 showed a weakness for hot cracking.
    BY Huang, et al.
    Published January 2001
  • The Stress-Relief Cracking Susceptibility of a New Ferritic Steel m Part 2: Multiple-Pass Heat-Affected Zone Simulations
    A multipass technique was investigated as a means of reducing stress relief cracking of steels that normally require postweld heat treatment.
    BY J. G. Nawrocki, et al.
    Published January 2001
  • Mechanical Properties of Plasma-Hardened 5% Chromium Tool Steel Deposited by Arc Welding
    Treatment using a highly concentrated plasma jet created a very hard surface resistant to breakage with impact.
    BY L. K. Leshchinskiy and S. S. Samotugin
    Published January 2001


  • A Fuzzy Logic System for Process Monitoring and Quality Evaluation in GMAW
    A fuzzy logic system was developed to recognize common disturbances in automatic gas metal arc welding.
    BY C. S. Wu, T. Polte and D. Rehfeldt
    Published February 2001
  • Effects of Surface Depression on Pool Convection and Geometry in Stationary GTAW
    Greater control of bead width and weld penetration will come from a better understanding of weld pool convection.
    BY S. H. Ko, S. K. Choi and C. D. Yoo
    Published February 2001
  • Partially Melted Zone in Aluminum Welds - Planar and Cellular Solidification
    Solidification theories for metal casting and crystal growth were applied to the study of solidification in the partially melted zone.
    BY C. Huang and S. Kou
    Published February 2001
  • Modified Active Control of Metal Transfer and Pulsed GMAW of Titanium
    Active control technology is proposed to ensure a repeatable and stable one-drop-per-pulse transfer mode.
    BY Y. M. Zhang and P. J. Li
    Published February 2001


  • Experimental Evaluation of Fe-AI Claddings in High-Temperature Sulfidizing Environments
    The corrosion behavior and weldability of Fe-Al cladding were characterized in aggressive reducing environment.
    BY S. W. Banovic, et al.
    Published March 2001
  • Effect of Thermal Cycling on Friction Stir Welds of 2195 Aluminum Allos
    Thermal cycles in the dynamically recrystallized zone were shown to affect grain growth
    BY G. Oertelt, et al.
    Published March 2001
  • The Effects of Root Opening on Mechanical Properties, Deformation and Residual Stress of Weldments
    A new model is developed to predict residual stress and deformation in welded steel structure
    BY G. B. Jang, et al.
    Published March 2001


  • Modeling Microstructure Development in Self-Shielded Flux Cored Arc Welds
    Microstructure evolution was examined between two self-shielded flux cored electrodes with different levels of aluminum in their composition.
    BY S. S. Babu, et al.
    Published April 2001

  • Inclusion Formation in Self-Shielded Flux Cored Arc Welds
    The question whether the same analytical models used to predict oxide inclusions can be used to predict nitride formation is answered.
    BY M. A. Quintana, et al.
    Published April 2001

  • Reference Materials for Weld Metal Forrite Content: Gauge Calibration and Material Characterization
    The accuracy of values assigned to ferrite reference materials was established as a step in validating calibration procedures for ferrite gauges.
    BY C. N. McCowan, et al.
    Published April 2001


  • The Determination of Hydrogen Distribution in High-Strength Steel Weldments Part 1: Laser Ablation Methods
    Various types of instrumentation were investigated for measuring hydrogen distribution across the weld.
    BY R. D. Smith II, et al.
    Published May 2001

  • The Determination of Hydrogen Distribution in High-Strength Steel Weldments Part 2: Opto-Electronic Diffusible Hydrogen Sensor
    A fast operating sensor for measuring diffusible hydrogen was designed and successfully tested.
    BY R. D. Smith II, et al.
    Published May 2001

  • Advances in Oxygen Equivalent Equations for Predicting the Properties of Titanium Welds
    New oxygen equivalent equations were developed through statistical regression analysis of mechanical property data.
    BY D. D. Harwig, et al.
    Published May 2001


  • Fatigue Strength Depending on Position of Transverse Cracks in FCAW Process
    An investigation is made into the use of the FCAW process on thick weldments and their fatigue strength properties.
    BY H. W. Lee, et al.
    Published June 2001

  • Precision Laser Brazing Utilizing Nonimaging Optical Concentration
    The laser process is used to braze tube assemblies used in aerospace and medical application.
    BY V. R. Dave', et al.
    Published June 2001

  • Advances in Oxygen Equivalent Equations for Predicting the Properties of Titanium Welds
    New oxygen equivalent equations were developed through statistical regression analysis of mechanical property data.
    BY D. D. Harwig, et al.
    Published June 2001


  • Efflux Plasma Charge-Based Sensing and Control of Joint Penetration during Keyhole Plasma Arc Welding
    An effective penetration control system was es "tablished using a linear relationship to the back-side weld pool width.
    BY S. B Zhang and Y. M. Zhang
    Published July 2001

  • Laser-Assisted Gas Metal Arc Welding of 25-ram-Thick HY-80 Plate
    A hybrid welding process shows promise, but weld toughness needs improvement on thick HY-80.
    BY C. V. Hyatt, et al.
    Published July 2001

  • Fume Generation during Solid- and Metal-Cored Wire Welding
    Fume generation results using the same process, but two different electrode types, were recorded over a wide range of voltages and wire feed speeds.
    BY H. Xin, et al.
    Published July 2001

  • Optimization of Arc Welding Process Parameters Using a Genetic Algorithm
    Establishment of process parameters to control bead geometry required very few experiments when genetic algorithms were used.
    BY D. Kim and S. Rhee.
    Published July 2001


  • Welding of Martensitic Creep-Resistant Steels
    An effective penetration control system was es "tablished using a linear relationship to the back-side weld pool width.
    BY L. Béres, et al.
    Published August 2001

  • Effect of Friction Stir Welding on Dynamic Properties of AA2024-T3 and AA7075-T7351
    Some interesting results of an investigation into dynamic compressive flow behavior expand our understanding of the friction stir welding process.
    BY Y. J. Chao, et al.
    Published August 2001

  • Approximate Stress Formulas for a Multiaxial Spot Weld Specimen
    A newly proposed multiaxial spot weld specimen allows testing under combined loads.
    BY S. Zhang
    Published August 2001

  • Pore Formation during Laser Beam Welding of Die-Cast Magnesium Alloy AM60B - Mechanism and Remedy
    This study identifies what causes pore formation and presents solutions to the problem/
    BY H. Zhao, et al.
    Published August 2001


  • Effect of Projection Height on Projection Collapse and Nugget Formation - A Finite Element Study
    An investigation into heat generation at the point of contact sheds light on developing a weld nugget faster and with less current.
    BY X. Sun
    Published September 2001

  • Root Weld Formation in Modified Refractory Flux One-Sided Welding: Part 1 - Effect of Welding Variables
    The influence of welding variables on the integrity of welds produced by a refractory flux method is defined.
    BY V. Malin
    Published September 2001

  • Root Weld Formation in Modified Refractory Flux One-Sided Welding: Part 2 - Effect of Joint Geometry
    The influence of joint geometry on the integrity of welds produced by a refractory flux methodis defined.
    BY V. Malin
    Published September 2001


  • Simulation of Dynamic Behavior in a GMAW System
    A model is proposed to predict the variations in welding parameters with the short circuiting transfer mode.
    BY J. H. Choi, et al.
    Published October 2001

  • Heat Generation in the Inertia Welding of Dissimilar Tubes
    A simple approach to determining the heat allocation to both sides of a dissimilar joint is proposed.
    BY V. R. Davé, et al.
    Published October 2001


  • Intelligent Control for the Shape of the Weld Pool in Pulsed GTAW with Filler Metal
    An investigation into ways of controlling bead shape will be beneficial in automating the gas tungsten arc process.
    BY D. B. Zhao, et al.
    Published November 2001

  • Laser Beam Welding of Automobile Hinges
    The structural integrity of automobiles hinges was evaluated under various laser welding parameters.
    BY L. Quintino, et al.
    Published November 2001

  • Mechanical Properties and Microstructures of Inertia-Friction-Welded 416 Stainless Steel
    Friction welding proves viable in joining a stainless steel considered unweldable by fusion processess.
    BY K. S. Mortensen, et al.
    Published November 2001


  • Interstitial Diffusion of Carbon and Nitrogen into Heat-Affected Zones of 11-12% Chromium Steel Welds
    The possibility of introducing austenite stabilizers into the heat-affected zone during welding to restrict grain growth is investigated.
    BY A. M. Meyer and M. du Toit
    Published December 2001

  • Factors Affecting the Properties of Friction Stir Welded Aluminum Lap Joints
    An extensive study conducted on interface morphology and mechanical properties of friction stir welds brings a greater understanding of the process.
    BY L. Cederqvist and A. P. Reynolds
    Published December 2001

  • An Enhanced Faraday Cup for Rapid Determination of Power Density Distribution in Electron Beams
    A diagnostic tool for rapidly measuring the power density, distribution of an electron beam offers repeatabilit in producing a focused beam.
    BY J. W. Elmer and A. T. Teruya
    Published December 2001