Mechanical properties of thin films of laser-welded titanium and their associated welding defects
Mechanical properties of thin films of laser-welded titanium and their associated welding defects
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激光焊接钛薄膜的机械性能及其相关焊接缺陷
DOI：
10.1007/s10103-013-1334-1
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发表时间：
2014
影响因子：
2.1
通讯作者：
Weifeng Wang
中科院分区：
文献类型：
--
作者：
Yulu Wu;H. Xin;Chun;Zhongbin Tang;Zhiyuan Zhang;Weifeng Wang
本研究的目的是使用干涉应变/位移计（ISDG）的激光焊接铸造钛薄膜的机械性能进行评估，并分析影响激光焊接的因素。采用线切割方法制备了激光焊接后的狗骨形小试件。根据激光焊接的差距距离将试件分为三组;对照组为未焊接的钛。采用ISDG拉伸试验机对经X射线筛选无铸造缺陷的小试样进行了拉伸试验，并绘制了应力-应变曲线。最后对断口进行了织构分析。间隙距离为0.00、0.25和0.50 mm的样本的极限拉伸强度（UTS）分别为492.16 ± 33.19、488.09 ± 43.18和558.45 ± 10.80 MPa。试验组与对照组UTS无显著性差异（p> 0.05）。随着差距距离的增大，塑性变形量和延伸率均增大。未焊透缺陷出现在间隙距离较小的组中，这可能影响了激光焊接钛的性能。不过，焊接材料依旧是纯钛。这些结果表明，应保持适当的间隙距离，以提高牙科激光焊接的应用。
The aim of this study was to evaluate the mechanical properties of thin films of laser-welded cast titanium using an interference strain/displacement gauge (ISDG) and to analyze factors that affect laser welding. Dog-bone-shaped small specimens of cast titanium were prepared by wire cutting after they were laser-welded. The specimens were divided into three groups according to the gap distance of the laser weld; the control was non-welded titanium. Small specimens without cast defects detected by X-ray screening were measured by a tensile test machine using ISDG, and stress–strain curves were drawn. Finally, the fracture texture was analyzed. The ultimate tensile strengths (UTSs) of specimens with a gap distance of 0.00, 0.25, and 0.50 mm were 492.16 ± 33.19, 488.09 ± 43.18, and 558.45 ± 10.80 MPa, respectively. There were no significant differences in UTS between the test groups and the control group (p > 0.05). However, the plastic deformation and the percent elongation increased as the gap distance increased. Incomplete penetration defects appeared in groups that had small gap distances, which may have affected the properties of the laser-welded titanium. However, the welding material was still pure titanium. These results suggest that an appropriate gap distance should be maintained to improve the application of dental laser welding.
激光焊接 Ti 和 Ti-6AL-7NB 的拉伸强度和延伸率。
DOI：
10.1002/jbm.b.30058
发表时间：
2004
期刊：
Journal of biomedical materials research. Part B, Applied biomaterials
影响因子：
--
作者：
Watanabe,Ikuya;Topham,DScott
通讯作者：
Topham,DScott
影响因子：
4.8
作者：
Grigoriou, V;Shapiro, IM;Adams, CS
通讯作者：
Adams, CS