WJ Supplements -1999

RESEARCH PAPERS

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  • The Role of Aluminum on the Weldability and Sulfidation Behavior of Iron-Aluminum Cladding
    The study showed cracking of Fe-Al cladding was independent of the welding process and parameters, but related directly to the amount of aluminum present. BY S. W. BANOVIC, J. N. DuPONT, P. F. TORTORELLI AND A. R. MARDER S. W. BANOVIC, J. N. DuPONT and A. R. MARDER are with the Department of Materials Science and Engineering, Lehigh University, Bethlehem, Pa. P. F. TORTORELLI is with Oak Ridge National Laboratory, Oak Ridge, Tenn.
    Posted 1/99
  • Transient Thermal Analysis of Spot Welding Electrodes
    A parametric model was developed to predict thermal behavior of electrode cap. BY K. S. YEUNG AND P. H. THORNTON, K. S. YEUNG and P. H. THORNTON are with Scientific Research Laboratories, Ford Motor Company, Dearborn, Mich.
    Posted 1/99
  • Finite Element Model of Pulsed Laser Welding
    A newly developed model correlated with an experiment has shown laser beam energy distribution and absorptivity greatly affects laser weld dimensions. BY M. R. FREWIN AND D. A. SCOTT
    Posted 2/99
  • How to Control Hydrogen Level in (Super) Duplex Stainless Steel Weldments Using the GTAW or GMAW Process
    Welding parameters seem to be the determining factor for controlling hydrogen levels even when high shielding gas moisture, high ferrite level and high restraint conditions were induced. BY V. v. d. MEE, H. MEELKER and R. v. d. SCHELDE
    Posted 2/99
  • Hydrogen-Induced Cracking along the Fusion Boundary of Dissimilar Metal Welds
    The susceptibility of dissimilar austenitic/ferritic combinations to hydrogen-induced cracking near the fusion boundary has been investigated. By M. D. Rowe, T. W. Nelson and J. C. Lippold
    Posted 4/99
  • Modeling and Analysis of Laser Melting within a Narrow Groove Weld Joint
    Experimental melt patterns on 304 stainless steel agree well with calculation and simulation results. BY J. O. MILEWSKI AND M. B. BARBE
    Posted 7/99
  • Determination of Weld Loads and Throat Requirements Using Finite Element Analysis with Shell Element Models Ð A Comparison with Classical Analysis
    Weld size requirements based on throat shear against electrode allowables were calculated with loads derived from FEA shell element results. BY M. A. WEAVER
    Posted 7/99
  • Intermediate Temperature Joining of Dissimilar Metals
    Stainless steel and Ag-Ni-Ag laminate are joined to copper with Au-based alloys at 400-550°C (752-1022°F). BY F. M. HOSKING, J. J. STEPHENS AND J. A. REJENT
    Posted 7/99
  • Process Behavior and Stability in Short Circuit Gas Metal Arc Welding
    The stability of the short circuit gas metal arc welding process is directly related to weld pool oscillations. BY M. J. M. HERMANS AND G. DEN OUDEN
    Posted 7/99
  • Fume Formation Rates in Gas Metal Arc Welding
    A new fume chamber design improves the accuracy of fume generation data. BY B. J. QUIMBY AND G. D. ULRICH
    Posted 7/99
  • Development of Welding Wire for High-Purity Austenitic Stainless Steels
    Welds produced with the developed filler metal possess equivalent corrosion and mechanical properties to high-purity stainless steel, in addition to good weldability. BY H. Y. HAN AND Z. SUN
    Posted 7/99
  • Thermocapillary and Arc Phenomena in Stainless Steel Welding
    The influence of thermocapillary convection on weld shape is investigated for the gas tungsten arc process. BY S. W. PIERCE, P. BURGARDT AND D. L. OLSON
    Posted 7/99
  • Observation of the Keyhole during Plasma Arc Welding
    Once the keyhole was established, the width of the keyhole did not change with an increasing welding current and a decreasing welding speed. BY Y. M. ZHANG AND S. B. ZHANG
    Posted 7/99
  • On-Line Quality Monitoring in Short-Circuit Gas Metal Arc Welding
    Results show it is possible to detect changes in weld quality automatically and on-line. BY S. ADOLFSSON, A. BAHRAMI, G. BOLMSJÖ AND I. CLAESSON
    Posted 7/99
  • Steady and Pulsed Direct Current Welding with a Single Converter
    With a new method of firing the thyristors, steady and pulsed direct current welding with a single three-phase converter is possible. BY M. THAMODHARAN, H. P. BECK AND A. WOLF
    Posted 7/99
  • Static and Fatigue Behavior of Spot-Welded 5182-0 Aluminum Alloy Sheet
    Dilution from FCAW-S weld metals influences SMAW mechanical properties. BY A. GEAN, S. A. WESTGATE, J. C. KUCZA AND J. C. EHRSTROM
    Posted 7/99
  • The Effects of Intermixed Weld Metal on Mechanical Properties Ð Part I
    Dilution from FCAW-S weld metals influences SMAW mechanical properties. BY M. A. QUINTANA AND M. Q. JOHNSON
    Posted 7/99
  • The Effect of Joint Design and Volume Fraction on Friction Welding Properties of A360/SiC (p) Composites
    For this friction welding system, the joint strength is best with 360 Al-360Al and worst with 360Al/10v-%-360Al/10v-% SiC particulate composites. BY C. B. LIN, C. K. MU, W. W. WU AND C. H. HUNG
    Posted 7/99
  • Weld Microstructure Development and Properties of Precipitation-Strengthened Martensitic Stainless Steels
    The cracking behavior and mechanical properties are discussed in terms of microstructural evolution. BY J. A. BROOKS AND W. M. GARRISON, Jr.
    Posted 11/99
  • A Study on the Role of Adhesives in Weld-Bonded Joints
    Stresses in weld-bonded joints with adhesives of different elastic moduli and thicknesses are obtained by a three-dimensional finite element method. BY B. H. CHANG, Y. W. SHI AND S. J. DONG
    Posted 11/99
  • Welding Consumable Development for a Cryogenic (4 K) Application
    Research led to the development of a nitrogen- and manganese-modified, high- nickel stainless steel alloy for a demanding cryogenic magnet application. BY S. F. KANE, A. L. FARLAND, T. A. SIEWERT AND C. N. McCOWAN
    Posted 11/99
  • Analytical Solutions for Transient Temperature of Semi-Infinite Body Subjected to 3-D Moving Heat Sources
    Analytical solutions for 3-D moving heat sources were derived and experimentally validated by transient temperature measured at various points in bead-on-plate specimens and by means of weld pool geometry. BY N. T. NGUYEN, A. OHTA, K. MATSUOKA, N. SUZUKI AND Y. MAEDA
    Posted 11/99
  • Material Flow Behavior during Friction Stir Welding of Aluminum
    Tracers embedded in the weld path and a 3stop action2 technique give insight into the movement of material during friction stir welding. BY K. COLLIGAN
    Posted 11/99
  • Microstructural Development and Solidification Cracking Susceptibility of a Stabilized Stainless Steel
    Solidification modeling results are utilized to relate fusion zone composition to mushy zone characteristics and resultant solidification cracking susceptibility in Alloy 20Cb-3. BY J. N. DuPONT
    Posted 11/99
  • Pulsed Nd:YAG Laser Seam Welding of Zinc-Coated Steel
    Successful welds without gas-formed porosity are made in tightly clamped lap joints of zinc-coated sheet steel. BY Y-F. TZENG
    Posted 11/99
  • Determination of Mechanical and Fracture Properties of Laser Beam Welded Steel Joints
    Flat microtensile specimens were found suitable for determining the mechanical properties of similar and dissimilar laser beamweld joints. BY G. ÇAM, S. ERIM, Ç. YENI AND M. KOÇAK
    Posted 11/99
  • Porosity, Underfill and Magnesium Loss during Continuous Wave Nd:YAG Laser Welding of Thin Plates of Aluminum Alloys 5182 and 5754
    Keyhole stability is found to play a major role in porosity formation. BY M. PASTOR, H. ZHAO, R. P. MARTUKANITZ AND T. DEBROY
    Posted 11/99
  • All-Weld-Metal Design for AWS E10018M, E11018M and E12018M Type Electrodes
    The best combination of alloying elements to provide optimum toughness and strength is investigated. BY E. S. SURIAN AND L. A. de VEDIA
    Posted 11/99
  • Welding Aluminum Alloy 6061 with the Opposing Dual-Torch GTAW Process
    A modified welding system achieves good joint penetration and controlled heat input with the gas tungsten arc process. BY Y. M. ZHANG AND S. B. ZHANG
    Posted 11/99
  • A Martensite Boundary on the WRC-1992 Diagram
    A martensite boundary, based upon magnetic measurements and longitudinal face bend tests, is proposed for the WRC-1992 diagram. BY D. J. KOTECKI
    Posted 11/99
  • Strength and Structure of Furnace-Brazed Joints between Aluminum and Stainless Steel
    The causes of joint brittleness are investigated and ways to prevent it are suggested. BY M. ROULIN, J. W. LUSTER, G. KARADENIZ AND A. MORTENSEN
    Posted 11/99
  • Experimental Approach to Selection of Pulsing Parameters in Pulsed GMAW
    A method for selection of process parameters in pulsed GMAW helps to efficiently develop welding procedures. BY S. SUBRAMANIAM, D. R. WHITE, J. E. JONES AND D. W. LYONS
    Posted 11/99
  • Welding Distortion of a Thin-Plate Panel Structure
    The effect of welding sequence on panel distortion is evaluated. BY C. L. TSAI, S. C. PARK AND W. T. CHENG
    Posted 11/99
  • Approximate Stress Intensity Factors and Notch Stresses for Common Spot-Welded Specimens
    The formulas developed will be helpful for testing, design and optimization of fatigue-resistant spot welds. BY S. ZHANG
    Posted 11/99
  • Effect of Enhanced Convection on the Microstructure of Al-Cu-Li Welds
    Microstructural analysis of welds made at different gravity levels reveal changes in the narrow band of fine equiaxed grains along the fusion zone. BY D. K. AIDUN AND J. P. DEAN
    Posted 11/99
  • Directivity Evaluation of an Artificial in a Simulated Butt Joint by the Visualization Method
    The directivity of ultrasonic waves is investigated. BY Y. H. NAM
    Posted 11/99
  • Nature and Evolution of the Fusion Boundary in Ferritic-Austenitic Dissimilar Weld Metals, Part 1 Nucleation and Growth
    A model for heterogeneous nucleation along the fusion boundary is proposed. BY T. W. NELSON, J. C. LIPPOLD AND M. J. MILLS
    Posted 11/99
  • Digital Image Correlation for Determination of Weld and Base Metal Constitutive Behavior
    A new method to determine the constitutive behavior for all of the materials comprising a weld is described. BY A. P. REYNOLDS AND F. DUVALL
    Posted 11/99
  • Laser Welding of Thin Sheet Steel with Surface Oxidation
    Surface oxidation enhances the absorption of laser energy significantly and has little influence on the mechanical properties of laser welds. BY J. XIE AND A. KAR
    Posted 11/99
  • Effects of Welding Parameters and Electrode Atmospheric Exposure on the Diffusible Hydrogen Content of Gas Shielded Flux Cored Arc Welds
    A variety of electrodes were subjected to atmospheric exposure tests to determine their susceptibility to moisture absorption. BY D. D. HARWIG, D. P. LONGENECKER AND J. H. CRUZ
    Posted 11/99
  • Arc Sensing for Defects in Constant-Voltage Gas Metal Arc Welding
    A method for detecting flaws in automatic, constant-voltage gas metal arc welding using the process current and voltage signals was developed. BY T. P. QUINN, C. SMITH, C. N. McCOWAN, E. BLACHOWIAK AND R. B. MADIGAN
    Posted 11/99
  • Effects of Superplastic Deformation on the Diffusion Welding of SuperDux 65 Stainless Steel
    A two-stage diffusion process resulted in greatly improved weld strength. BY M. S. YEH, Y. H. TSENG AND T. H. CHUANG
    Posted 11/99
  • Critical Specimen Sizes for Tensile-Shear Testing of Steel Sheets
    Strength measurement of spot welds depends on both weld quality and testing specimens. BY M. ZHOU, S. J. HU AND H. ZHANG
    Posted 11/99
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