GTA Welding of Copper Thick Plates by Using ERCuTi Welding Materials

Yi Nan Li; Z.L. Peng; J.C. Yan

doi:10.4028/www.scientific.net/MSF.697-698.409

Paper Titles

Process Parameter Optimization on Pneumatic Bulging for Abnormity Thin-Wall Pot
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The Dissolution Mechanism of Copper Weld Brazing with Cu-Based Brazing Alloys
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Effect of Weld Line Direction and Its Position on Drawing Performance of Tailor-Welded Blanks
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Research on Stress Corrosion Behavior of AISI304 Stainless Steel Enhanced by Ultrasonic Peening Treatment
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GTA Welding of Copper Thick Plates by Using ERCuTi Welding Materials
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Conceptual Design for Upper Beam of Hydraulic Press
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Study on the Maximum Forging Load and Final Face Width of Powder Spur Gear Forging
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Study on Mapping of Forming Precision of Workpiece to Stiffness of Hydropress Frame
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Research on the Propagation of the Crack Inclined across the Interface in the Cermet Cladding Part
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HomeMaterials Science ForumMaterials Science Forum Vols. 697-698GTA Welding of Copper Thick Plates by Using ERCuTi...

GTA Welding of Copper Thick Plates by Using ERCuTi Welding Materials

Abstract:

The new welding material – ERCuTi alloys filler metals were developed specially for gas tungsten arc welding (GTAW) of copper. The hot cracking in welding copper is inhibited completely as the addition of de-oxidant element Ti in copper welding material. The degree of addition of Ti (2-4wt%) is critical when the susceptibility of cracking is to be suppressed. If the level is allowed to exceed 4wt%, more low-melting point eutectics (β-TiCu₄ and TiCu₂) will be formed in the welds, and cracking susceptibility will be increased again. Results of mechanical properties tests show that although adding Ti increases the hardness and strength of the weld compared to the base metal, the impact ductility and the plastic properties are not decreased significantly.