WJ Supplements - 2003


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  • Friction Stir Welding Studies on Mild Steel
    Friction stir welding is a proven process in joining aluminum, but this investigation shows it can also be a process of choice on ΒΌ-in. mild steel plate.
    BY T. D. Lienert et al.
    Published January 2003
  • Improved Ferrite Number Prediction Model that Accounts for Cooling Rate Effects - Part 1: Model Development
    A model based on a neural network architecture predicts Ferrite Number equally well for austenitic stainless steels and duplex stainless steels.
    BY J. M. Vitek et al.
    Published January 2003
  • Assessing the Effects of Residual Stresses on the Fatigue Strength of Spot Welds
    Residual stress is taken into account in developing a systematic and accurate method of evaluating fatigue strength.
    BY D. H. Bae et al.
    Published January 2003

  • The Mechanism of Stress-Relief Cracking in a Ferritic Alloy Steel
    The mechanism of stress-relief cracking is investigated through stress relaxation testing and microstructural characterization.
    BY J. G. Nawroeki et al.
    Published February 2003
  • Influence of Reflected Arc Light on Vision Sensors for Automatic GTAW Systems
    Arc sensors have reliability problems because of light reflectance, but a model developed to predict arc noise offers greater design flexibility.
    BY J.-Y. Yu et al.
    Published February 2003
  • Improved Ferrite Number Prediction Model that Accounts for Cooling Rate Effects - Part 2: Model Results
    A ferrite prediction model based on neural networks is valid for both austenitic stainless steel and duplex stainless steel under conditions of conventional or high cooling rates.
    BY J. M. Vitek et al.
    Published February 2003

  • Weld Solidification and Cracking Behavior of Free-Machining Stainless Steel
    Studies identified a range of alloy compositions that exhibited good resistance to solidification cracking.
    BY d. A. Brooks et al.
    Published March 2003
  • Numerical Simulation of Inertia Friction Welding Process by Finite Element Method
    The finite element method was used to predict temperature variations, deformation, stress, and strain during inertia friction welding.
    BY L. Fu et al.
    Published March 2003

  • Relationships between Quality and Attributes of Spot Welds
    Quantitative relationships establish a connection between a weld's geometric and mechanical characteristics to its shear strength.
    BY M. Zhou et al.
    Published April 2003
  • Fatigue Strength Improvement of Lap Joints of Thin Steel Plate Using Low-Transformation-Temperature Welding Wire
    Fatigue strength was greatly improved with a new welding wire that induced compressive stress around the welded part without preheating or postweld heat treatment.
    BY A. Ohta et al.
    Published April 2003
  • Weld Properties of AIS1303 Free-Machining Stainless Steel
    A range of alloy compositions was identified that gave good strength and ductility in welds made with the gas tungsten arc and laser beam welding processes.
    BY J. A. Brooks et al.
    Published April 2003

  • Characteristics of Welding and Arc Signal in Narrow Groove Gas Metal Arc Welding Using Electromagnetic Arc Oscillation
    Optimum welding parameters are sought to minimize incomplete fusion in a deep, narrow groove.
    BY Y. H. Kang et al.
    Published May 2003
  • A Mathematical Model of Wire Feeding Mechanisms in GMAW
    A model that predicts friction between a welding wire and its liner was developed to help evaluate conditions of poor feedability
    BY T. M. Padilla et al.
    Published May 2003
  • Analysis of Gamma Titanium Aluminide Welds Produced by Gas Tungsten Arc Welding
    Good performance at elevated temperatures makes TiAI intermetallic alloys attractive, but welding them requires a careful selection of parameters.
    BY M. F. Arenas et al.
    Published May 2003
  • Influence of Welding Machine Mechanical Characteristics on the Resistance Spot Welding Process and Weld Quality
    Machine stiffness, friction, and moving mass were systematically investigated to determine their relation to weld quality.
    BY H. Tang et al.
    Published May 2003

  • Microstructural Evolution and Weldability of Dissimilar Welds between a Super Austenitic Stainless Steel and Nickel-Based Alloys
    Investigation focuses on solidification cracking susceptibility in joining AL-6XN to IN625 and IN622.
    BY J. N. Dupont et al.
    Published June 2003
  • Effect of Welding Parameters and H2S Partial Pressure on the Susceptibility of Welded HSLA Steels to Sulfide Stress Crack
    The NACE hardness requirements for high-strength line pipe extrapolated to service conditions were assessed.
    BY G. M. Omweg at al.
    Published June 2003
  • Liquation Phenomena in the Simulated Heat-Affected Zone of Alloy 71 8 after Multiple Postweld Heat Treatment Cycles
    Heat treatment cycles were conducted to simulate weld repair or postweld treatment on Alloy 718.
    BY M. Qian and J. C. Lippold
    Published June 2003
  • Laser Beam Weld Bonding of AA5754 for Automobile Structures
    A laser source is substituted for the more traditional spot weld to provide the benefits of weld bonding.
    BY R. W. Messier et al.
    Published June 2003

  • A Proposed S-N Curve for Welded Ship Structures
    Finite element analysis is used to predict stress hot spots, using stress associated with static loads.
    BY S. W. Kang et al.
    Published July 2003
  • A Probabilistic Diffusion Weld Modeling Framework
    A new theory for selecting weld schedules for spot welding is based on using a "characteristic" sheet thickness.
    BY V. R. Dave et el.
    Published July 2003
  • Selection of Schedules Based on Heat Balance in Resistance Spot Welding
    A review of problems associated with methods of modeling diffusion welds leads to an analysis of the relationship between joint porosity and impact strengths.
    BY S. Agashe et el.
    Published July 2003
  • Liquation Cracking in Partial-Penetration Aluminum Welds: Effect of Penetration Oscillation and Backfilling
    Liquation cracking near the weld root was studied, focusing on penetration oscillation and backfilling.
    BY C. Huang at el.
    Published July 2003

  • Experimental Study of Nugget Formation in Resistance Spot Welding
    A high-speed digital camera aids in understanding the dynamic resistance of spot welds.
    BY Y. Cho and S. Rhee
    Published August 2003
  • A New Approach for Fluid Flow Model in Gas Tungsten Arc Weld Pool Using Longitudinal Electromagnetic Control
    Analytical model incorporates the influence of the magnetic field in the weld pool.
    BY J. Luo et al.
    Published August 2003
  • Fatigue Behavior of Spot Welded High-Strength Sheet Steels
    Three high-strength sheet steels were compared to a conventional sheet steel using two sample geometries to represent different loading conditions.
    BY R. W. Rathbun et al.
    Published August 2003
  • Nitrogen Control during Autogenous Arc Welding of Stainless Steel - Part 1: Experimental Observations
    The influence of nitrogen in base metal, surface-active elements, and shielding gas was investigated for austenitic stainless steel.
    BY M. Du Toit et al.
    Published August 2003
  • The Relationship between Residual Stresses and Transverse Weld Cracks in Thick Steel Plate
    Residual stresses were measured for different welding conditions using the flux cored and submerged arc welding processesl.
    BY H. W. Lee et al
    Published August 2003

  • Nitrogen Control during the Autogenous Arc Welding of Stainless Steel - Part 2: A Kinetic Model for Nitrogen Absorption and Desorption
    This investigation examined the influences of shielding gas, composition, and base metal on the absorption and desorption of nitrogen in stainless steel welds.
    BY M. du Toit et al.
    Published September 2003
  • Characteristics of Distortion Generated by Welding Under Static Loading
    A basic equation is developed to describe transverse shrinkage produced by welding under load.
    BY M. J. Kang at al.
    Published September 2003
  • Spatter Rate Estimation in the Short Circuit Transfer Region of GMAW
    An artificial neural network is used to predict spatter rate as a barometer of welding process stability.
    BY Y. C. Kim et al.
    Published September 2003
  • A Barrier Layer Approach to Limit Ti Scavenging in FeNiCo/Ag-Cu-Ti/AI20 3 Active Braze Joints
    A molybdenum interlayer between ceramic materials is found to produce a strong, hermetic braze joint.
    BY P. T. Vianco et al.
    Published September 2003

  • Titanium Scavenging in Ag-Cu-Ti Active Braze Joints
    Residual stresses created by a thermal expansion mismatch when brazing metal to ceramic are shown to be alleviated by spacers.
    BY J. E. Gould
    Published October 2003
  • Theoretical Analysis of Welding Characteristics during Resistance Mash Seam Welding of Sheet Steels
    The underlying mechanics of joint formation in mash seam welding, a popular joining process in industry, have not been studied extensively.
    BY P. T. Vianco et al.
    Published October 2003
  • The High-Temperature Wetting Balance and the Influence of Grit Blasting on Brazing of IN718
    Different grit blasting media and mechanical polishing are compared to determine their influence on the wetting of brazing filler metals.
    BY H. D. Solomon et al.
    Published October 2003
  • An Investigation of Ductility Dip Cracking in Nickel-Based Filler Materials - Part I
    The cracking that occurs in the weld joint between SA533 pressure vessel steel and stress corrosion cracking resistant Alloy 690 was investigated.
    BY M. G. Collins and d. C. Lippold
    Published October 2003
  • Penetration and Defect Formation in High-Current Arc Welding
    High-current welding can lead to increased productivity, but it also may be the source of certain types of discontinuities.
    BY P. F. Mendez and T. W. Eagar
    Published October 2003

  • Effects of Electrode Degradation on Electrode Life in Resistance Spot Welding of Aluminum Alloy 5182
    Electrode endurance tests were used to investigate the effects of electrode degradation on electrode life.
    BY S. Fukumoto et al.
    Published November 2003
  • Weldability of a Corrosion-Resistant Ni-Cr-Mo-Cu Alloy
    Varestraint tests showed adding copper to a Ni-Cr-Mo alloy did not harm weldability.
    BY M. D. Rowe et al.
    Published November 2003
  • Evaluation of Necessary Delay before Inspection for Hydrogen Cracks
    Ultrasonic techniques were used to monitor crack development in a variety of test welds.
    BY R. Pargeter
    Published November 2003
  • Behavior of Welded Joints of Creep-Resistant Steels at Service Temperature
    The consequences of the diffusion that occurs in heterogeneous joints in creep-resistant steels during high-temperature service conditions were examined.
    BY L. Beres et al.
    Published November 2003

  • Interpretation of Phase Formation in Austenitic Stainless Steel Welds
    Using laser spot and gas tungsten arc welds, a study was conducted to establish criteria for the identification of fully austenitic microstructure.
    BY T. lamboliev et al.
    Published December 2003
  • An Investigation of Ductility Dip Cracking in Nickel-Based Weld Metals - Part II
    Investigation focuses on the fracture characteristics of strain-to-fracture samples for nickel-based filler metals 52 and 82.
    BY M. G. Collins et al.
    Published December 2003
  • Development of the Strain-to-Fracture Test
    A robust test is developed to help understand the fundamental factors that affect cracking.
    BY N. E. Nissley and J. C. Lippold
    Published December 2003