Joint properties of cast Fe-Pt magnetic alloy laser welded to gold alloys

✍ Scribed by Ikuya Watanabe; Khoi Nguyen; P. Andrew Benson; Yasuhiro Tanaka

• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 376 KB
• Volume: 76B
• Category: Article
• ISSN: 1552-4973
• DOI: 10.1002/jbm.b.30351

✦ Synopsis

Abstract

This study investigated the joint properties of a cast Fe‐Pt magnetic alloy (Fe‐36 at % Pt) laser welded to three gold alloys. The gold alloys used were ADA Type II and Type IV gold alloys, and an Ag‐based (Ag‐Au) gold alloy. Cast plates (0.5 × 3.0 × 10 mm) were prepared for each alloy. After the cast Fe‐Pt plates were heat treated, they were butted against each of the three alloys and then laser welded with Nd:YAG laser at 200 V. Homogeneously welded specimens were also prepared for each alloy. Tensile testing was conducted at a crosshead speed of 1 mm/min. Failure load (N) and elongation (%) were recorded. After tensile testing, the fractured surfaces were examined with the use of SEM. The failure‐load values of the group of alloys welded homogeneously were ranked in the order of: Ag‐Au alloy > Type IV alloy > Type II alloy > Fe‐Pt alloy. The Type IV alloy welded to Fe‐Pt alloy had the highest failure‐load value among the three alloys tested. The elongation results tended to follow a similar pattern. The results of this study indicated that Type IV gold alloy is a suitable alloy for metal frameworks to which cast Fe‐Pt magnetic alloy is laser welded. © 2005 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2006