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<p>A comparative analysis of the geometrical sizes of zones of welded joints of titanium alloy VT6 (Ti – 6Al – 4V) formed by electron beam welding (EBW) with various parameters is performed. The EBW is simulated by single-pass displacement of electron beam across flat samples of VT6 in two different conditions, i.e., a rolled sheet and selective laser melted (SLM) workpiece. The initial microstructure of alloy VT6 and the beam current intensity in the SLM are shown to affect the geometry of the welded joint. The beam current intensity affects differently the microhardness of the welds subjected to the rolling and to the SLM. The method of metallography is used to demonstrate that the fusibility of the SLM samples is higher than that of the rolled samples at the same EBW modes.</p>

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Simulation of the Thermal Cycle of Electron-Beam Welding of Alloy VT6 (Ti – 6Al – 4V) Obtained by Rolling and Selective Laser Melting. 1. Comparative Analysis of Weld Geometry and Microhardness

  • 期刊论文

  • 发表日期：

    2025年11月1日

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  • A. A. Yakhin,
  • A. V. Panin

摘要

A comparative analysis of the geometrical sizes of zones of welded joints of titanium alloy VT6 (Ti – 6Al – 4V) formed by electron beam welding (EBW) with various parameters is performed. The EBW is simulated by single-pass displacement of electron beam across flat samples of VT6 in two different conditions, i.e., a rolled sheet and selective laser melted (SLM) workpiece. The initial microstructure of alloy VT6 and the beam current intensity in the SLM are shown to affect the geometry of the welded joint. The beam current intensity affects differently the microhardness of the welds subjected to the rolling and to the SLM. The method of metallography is used to demonstrate that the fusibility of the SLM samples is higher than that of the rolled samples at the same EBW modes.