Tensile strength and elongation of laser-welded Ti and Ti-6AL-7NB

Journal of Biomedical Materials Research. Part B, Applied Biomaterials
Ikuya Watanabe, D Scott Topham

Abstract

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.

References

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Citations

Jul 12, 2008·European Journal of Orthodontics·Jens Johannes BockRobert Andreas Werner Fuhrmann
Oct 1, 2011·Journal of Oral Science·Hisaji KikuchiTakayuki Yoneyama
Dec 7, 2007·Dental Materials : Official Publication of the Academy of Dental Materials·Viritpon SrimaneepongTakao Hanawa
Jun 15, 2007·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Ikuya WatanabeYvonne Chiu
Dec 4, 2009·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Honghua LiuGuo He
Jan 30, 2014·Brazilian Dental Journal·Juliana Abdallah AtouiOsvaldo Luiz Bezzon
Dec 18, 2008·Journal of Applied Oral Science : Revista FOB·Jens Johannes BockRobert Andreas Werner Fuhrmann

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