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WJ Supplements - 2009
RESEARCH PAPERS
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A CCT diagram valid for the heat-affected zone of welded X70 pipeline steel was established. BY M. I. Onsoien et al. Published January 2009 In this study both macroscopic mechanical and microscopic measures were quantified and compared for different combinations of filler metal and Ni-Cr-Fe alloys. BY F. F. Noecker II and J. N. DuPont Published January 2009 Tests showed excellent mechanical properties were achieved in underwater duplex stainless steel welds made under dry hyperbaric conditions. BY O. M. Akselsen et al. Published February 2009 The location and intensity of induction heat input were determined in order to mitigate longitudinal bending distortion of built-up beams during fabrication. BY J. U. Park et al. Published February 2009 Three-Dimensional Analysis of Molten Pool in GMA-Laser Hybrid Welding Analytical models of GMA and laser keyhole welding were merged to simulate hybrid welding and show the flow patterns of the molten pool. BY J.-H. Cho and S.-J. Na Published February 2009 Welding current is used to detect gun inclination and deviation in a robotic system that produces a curved fillet weld. BY Y. F. Gao et al. Published March 2009 A three-dimensional model was used to calculate weld pool fluid flow patterns and their effect on weld geometry. BY R. Rai et al. Published March 2009 The correlation of ductility dip cracking to a simulated thermal cycle helped evaluate microstructure and chemical evolution in four alloys. BY F. F. Noecker II and J. N. DuPont Published March 2009 Five laser lines provided the sensor sensitivity to precisely detect the joint in high-speed welding. BY K. Sung et al. Published April 2009 Buffer sheets reduced the sticking between the horn and the parts to be welded. BY M. Baboi and D. Grewell Published April 2009 Ways to overcome the arc instability of variable negative polarity and alternating current gas metal arc welding were investigated. BY L. O. Vilarinho et al. Published April 2009 The addition of nanoscale marble particles in the flux coating improved electrode arc stability, deposit efficiency, and wear resistance. BY B. Chen et al. Published May 2009 The circular patch test was adapted to evaluate the effect of impurities on cracking susceptibility of cast 7108. BY M. G. Mousavi et al. Published May 2009 Based on modeling of resistance heating and heat transfer between electrode and cooling water, a new cone-fin design on the underside of the cap is proposed. BY Z. H. Rao et al. Published May 2009 A unique optical system was used to collect data on spatter to characterize its relationship with workpiece contamination in GMAW. BY G. Schwab et al. Published June 2009 The mechanism of ductility-dip cracking was investigated in Ni-Cr-Fe weld metals to better understand microstructural influences. BY N. E. Nissley and J. C. Lippold Published June 2009 The accuracy of specular reflection of the weld pool as a method of measurement was established. BY H. Song and Y. M. Zhang Published July 2009 Experiments were conducted to evaluate whether the angle of welding has a detrimental effect on an ultrasonically welded component. BY E. T. Hetrick et al. Published July 2009 Power level, heat input, and preheat were investigated for their influence on the macro- and micro-structures of welds produced with the hybrid process. BY C. Roepke and S. Liu Published August 2009 The feasibility of producing sound welds in galvanized steel with a combination laser arc welding and gas tungsten arc preheating was verified. BY S. L. Yang and R. Kovacevic Published August 2009 Proper selection of preweld heat treatment resulted in crackfree welds. BY O. A. Idowu et al. Published September 2009 The small punch test was used to evaluate how the mechanical properties changed within the heat-affected zone of a welded joint made of quenched and tempered steel. BY C. Rodriguez et al. Published September 2009 Numerical and experimental simulations were used to improve the end joining of continuous-fed steel strip. BY R. Baumer and Y. Adonyi Published October 2009 This work models concentration gradients adjacent to the weld interface based on mass transport processes during solidification and cooling of the weld. BY D. B. Knorr and J. J. McGee Published October 2009 An investigation was conducted into the correlation of joint strength to workpiece position relative to the tool in friction stir welding. BY V. Firouzdor and S. Kou Published November 2009 The applicability of using friction stir welding to join 3-mm brass plate is evaluated BY G. Qam et al. Published November 2009 The development of a laser surface treatment to suppress sensitization in the heat-affected zone is described. BY R. Kaul et al. Published December 2009 Implantation of nitrogen ions in thermal spray coatings dramatically improved wear resistance. BY M. Belotserkovsky et al. Published December 2009 |