title: Joint properties of cast Fe-Pt magnetic alloy laser welded to gold alloys.
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 x 3.0 x 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.
authors.affiliation: Department of Biomaterials Science, Baylor College of Dentistry, Texas A&M University System Health Science Center, Dallas, Texas 75246, USA. iwatanabe@bcd.tamhsc.edu
authors.forename: Ikuya
authors.initials: I
authors.lastname: Watanabe
authors.forename: Khoi
authors.initials: K
authors.lastname: Nguyen
authors.forename: P Andrew
authors.initials: PA
authors.lastname: Benson
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Tanaka
mesh_terms: D000497:Alloys; D006046:Gold; D007501:Iron; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D010984:Platinum
chemical_list: D000497:Alloys; D010984:Platinum; D006046:Gold; D007501:Iron