Abstract
Joining porous elements (40-45% porosity) prepared by compaction and sintering of titanium powder (PTKh2-1) with compact titanium (VT1-0 and VT-6) by laser welding and plastic deformation is studied. Welding is accomplished by a pulsed-periodic laser Nd:YAG (λ = 1.06 μm). It is shown that prior mechanical treatment of porous surfaces improves welded joint quality. A joint may be obtained without the use of filler or consumable materials. Optimum welding regimes are determined. A permanent joint may also be prepared by local plastic deformation of an enveloping porous article and “flow” of its material into the groove of a compact article. Optimum production and structural parameters are determined: the level of relative deformation, deformation zone width, and relative groove height.
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Savich, V.V. Joining Porous and Compact Titanium by Laser Welding and Plastic Deformation. Powder Metallurgy and Metal Ceramics 42, 468–473 (2003). https://doi.org/10.1023/B:PMMC.0000013218.83943.02
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DOI: https://doi.org/10.1023/B:PMMC.0000013218.83943.02