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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >Tensile Strength and Elongation of Laser-Welded Ti and Ti-6Al - 7Nb
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Tensile Strength and Elongation of Laser-Welded Ti and Ti-6Al - 7Nb

机译：Ti和Ti-6Al-7Nb激光焊接的拉伸强度和伸长率

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摘要

This study established data demonstrating the possible laser-welded strengths of cast Ti and Ti-6Al-7Nb and compared them to those of two dental-casting alloys. Cast plates of Ti, Ti-6Al-7Nb, gold, and Co-Cr alloy were prepared. After polishing the surfaces to be welded, two plates were abutted and welded using an Nd:YAG laser at a pulse duration of 10 ms, spot diameter of 1 mm, and voltage of 200 V. Five specimens were prepared for each metal by welding either three or five spots unilaterally or bilaterally. The fracture load and percent elongation were measured at a crosshead speed of 1.0 mm/min. The bilaterally welded specimens performed significantly greater than unilaterally welded specimens in both fracture load and elongation whether they were welded with three or five spots per side. The bilaterally welded Ti and Ti-6Al-7Nb specimens were nearly as strong as their corresponding control specimens, whereas the gold and Co-Cr specimens were approximately half as strong. When a large proportion of the cross-sectional area of the joint is laser welded, the strength of the laser-welded portion of the cast Ti and Ti-6Al-7Nb may approach or equal that of the nonwelded metal frameworks.
机译：这项研究建立了表明铸造的Ti和Ti-6Al-7Nb可能的激光焊接强度的数据，并将它们与两种牙科铸造合金的强度进行了比较。准备了Ti，Ti-6Al-7Nb，金和Co-Cr合金的铸板。抛光要焊接的表面后，用Nd：YAG激光对接并焊接两块板，脉冲持续时间为10毫秒，光斑直径为1毫米，电压为200V。每种金属分别准备了五个试样进行焊接单侧或双侧三个或五个斑点。在1.0 mm / min的十字头速度下测量断裂载荷和伸长百分比。无论是每边焊接三个或五个点，双侧焊接的试样的断裂载荷和伸长率均显着大于单侧焊接的试样。双边焊接的Ti和Ti-6Al-7Nb试样的强度几乎与相应的对照试样相同，而金和Co-Cr试样的强度约为其一半。当对接头的大部分横截面进行激光焊接时，铸造的Ti和Ti-6Al-7Nb的激光焊接部分的强度可能接近或等于非焊接金属框架的强度。

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