Tensile strength and elongation of laser-welded Ti and Ti-6AL-7NB.
Tensile strength and elongation of laser-welded Ti and Ti-6AL-7NB.
复制标题
激光焊接 Ti 和 Ti-6AL-7NB 的拉伸强度和延伸率。
DOI：
10.1002/jbm.b.30058
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
Topham,DScott
中科院分区：
文献类型：
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作者：
Watanabe,Ikuya;Topham,DScott
本研究确立了铸造钛和Ti-6Al-7 Nb可能的激光焊接强度数据，并将其与两种牙科铸造合金进行了比较。制备Ti、Ti-6Al-7 Nb、金和Co-Cr合金铸造板。在抛光待焊接的表面之后，使用Nd：YAG激光器在10 ms的脉冲持续时间、1 mm的光斑直径和200 V的电压下对两个板进行抛光和焊接。通过单侧或双侧焊接三个或五个光斑，为每种金属制备五个试样。在十字头速度为1.0 mm/min时测量断裂载荷和伸长率。无论是每侧焊接三个或五个点，双侧焊接试样的断裂载荷和伸长率均显著大于单侧焊接试样。双侧焊接的Ti和Ti-6Al-7 Nb样本的强度几乎与其相应的对照样本相同，而金和Co-Cr样本的强度约为其一半。当接头的大部分横截面积是激光焊接时，铸造钛和Ti-6Al-7 Nb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。© 2004 Wiley Periodicals，Inc.生物医学材料研究杂志B部分：应用生物材料71 B：46-51，2004年
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. © 2004 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 71B: 46–51, 2004