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WJ Supplements - 2008
RESEARCH PAPERS
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A system of design criteria with assigned score values was developed to help select the most effective brazement design. BY A. E. Shapiro and D. P. Sekulic Published January 2008 To evaluate a newly developed consumable double electrode gas metal arc welding process, its fundamental characteristics were investigated. BY K. H. Li and Y. M. Zhang Published January 2008 A better way to seal electronic and optoelectronic components in hermetic enclosures was investigated. BY J. Zhang et al. Published January 2008 Test results showed that ductility dip cracking in these alloys are caused by thermal and solidification stresses induced during welding and a local grain boundary stress generated during precipitation of partially coherent (Cr, Fe)23C6 carbides. BY G. A. Young et al. Published February 2008 Using the developed interval control algorithm, closed-loop control experiments were conducted to verify the effectiveness of the proposed control system for the consumable doubleelectrode GMAW process. BY K. H. Li and Y. M. Zhang Published February 2008 Observation of Arc Start Instability and Spatter Generation in GMAW Spatter generation due to arc start instability was monitored using the voltage and wire feeding rate and an electrode temperature model was developed. BY U. Ersoy et al. Published February 2008 The heat-affected zone characteristics in welds produced with double-electrode GMAW were examined and compared to conventional GMAW. BY K. H. Li et al. Published March 2008 To get a better understanding of chemistry- and microstructure-property relationships in high-strength steel weld metals, their general compositional and microstructural characteristics were studied. BY J. E. Ramirez Published March 2008 A procedure was developed to characterize welding fume generated from arc welding processes that included measurement of fume generation rate, fume particle size, and mass distribution. BY J. W. Sowards et al. Published March 2008 A method of rebuilding a 3-D weld pool surface off-line was devised and verified. BY H. S. Song and Y. M. Zhang Published April 2008 Experiments indicate that the mode of failure should not be the only judge of spot weld quality in advanced high-strength steels. BY D. J. Radakovic and M. Tumuluru Published April 2008 Fume particles and generation rates were characterized as a function of size for three different covered electrodes. BY J. W. Sowards et al. Published April 2008 The effects of brazing temperature on the joint strength and microstructure of furnace brazed titanium/steel joints using copper-based filler metal were examined. BY A. El Refaey and W. Tillmann Published May 2008 The Varestraint weldability test was used to assess the susceptibility of a new, high-chromium nickel alloy to solidification cracking. BY G. M. Chirieleison et al. Published May 2008 Metal transfer modes in gas metal arc welding using DCEP in a variety of Ar-CO2 shielding gas mixtures and thin electrodes were investigated. BY E. J. Soderstrom and P. F. Mendez Published May 2008 The effects of material prestrain, cooling rate conditions, filler metal selection, dilution, and postbaking on the microstructure and mechanical properties of GMA welds on high-strength steels are characterized. BY N. Kapustka et al. Published June 2008 Real-time X-ray diffraction methods using synchrotron radiation were developed for the direct observation of phase transformations during welding. BY J. W. Elmer Published June 2008 The properties and characteristics of magnesium alloys joined with solid-state welding were investigated. BY Y. K. Yang et al. Published July 2008 A model was developed to predict stress, strain, and geometry of welds. BY S. A. A. Akbari Mousavi and A. Rahbar Kelishami Published July 2008 Distributions of temperature and plastic deformation from friction stress were studied. BY C. Zhang and L. Li Published July 2008 Palladium as an addition to filler metals for air brazing hightemperature devices was investigated for its melt elevator characteristics. BY J. S. Hardy and K. S. Weil Published August 2008 A simple binary alloy with an easy-to-understand microstructure was studied for its liquation properties when friction stir welded. BY Y. K. Yang et al. Published August 2008 The spectrum of radiation from the welding arc was analyzed and mathematical models were devised for both single and multiple wavelengths. BY M. S. Weglowski Published August 2008 A system was developed that automatically generates optimum weld control variables. BY P. V. Jeberg et al. Published September 2008 A modified gas metal arc process uses two tungsten electrodes to change forces affecting droplet transfer. BY Y. Shi et al. Published September 2008 The relationship between filler metal dilution and local strain rates on cracking was investigated. BY N. Coniglio et al. Published September 2008 Strain-age cracking susceptibility of six, gamma-prime strengthened Ni-based superalloys were evaluated using a Gleeble-based test method. BY D. A. Metzler Published October 2008 Ductility-dip cracking susceptibility of high-chromium, Ni-based filler metals frequently used in nuclear power plant applications were evaluated using strain-to-fracture testing. BY N. E. Nissley and J. C. Lippold Published October 2008 A short-cycle stud welding process using a cool, slow arc energy delivery method produced strong welds and process stability. BY C. Hsu et al. Published October 2008 Determining maximum surface hardness of unknown grades of steel proved helpful in developing welding procedures. BY R. W. Hinton and R. K. Wiswesser Published November 2008 Several welding wires were developed to aid in the investigation of the start and stop temperatures for martensite transformation in weld metal. BY M. C. Payares-Asprino et al. Published November 2008 The weldability and weld properties of modified X2CrNil2 stainless steel were studied. BY E. Taban et al. Published December 2008 Corrosion resistance of duplex stainless steels that undergo postweld heat treatments are very sensitive to time and temperature parameters. BY P. Ferro et al. Published December 2008 |