title: Possible segregation caused by centrifugal titanium casting.
abstract: The possibility of the segregation under solidification process using a centrifugal casting machine was investigated using an electron probe microanalyzer with elemental distribution map, line analysis and quantitative analysis. When a very small quantity of platinum was added to local molten titanium during the casting process, macroscopic segregation was observed under conditions of density difference of 0.1 g/cm3 at the most, confirming that the centrifugal force of the casting machine is extremely strong. When a Ti-6Al-4V alloy was cast, however, no macroscopic segregation was observed. The centrifugal force of the casting machine examined in the present study hardly results in the body-force segregation in this titanium alloy.
authors.affiliation: Department of Dental Materials and Technology, Niigata University School of Dentistry, EMX Laboratory.
authors.forename: K
authors.initials: K
authors.lastname: Watanabe
authors.forename: S
authors.initials: S
authors.lastname: Okawa
authors.forename: M
authors.initials: M
authors.lastname: Kanatani
authors.forename: S
authors.initials: S
authors.lastname: Nakano
authors.forename: O
authors.initials: O
authors.lastname: Miyakawa
authors.forename: M
authors.initials: M
authors.lastname: Kobayashi
mesh_terms: D000497:Alloys; D000535:Aluminum / Q000737:chemistry; D002498:Centrifugation; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003722:Dental Alloys / Q000737:chemistry*; D003735:Dental Casting Technique / Q000295:instrumentation*; D004577:Electron Probe Microanalysis; D008669:Metallurgy; D010984:Platinum / Q000737:chemistry; D014025:Titanium / Q000737:chemistry*
chemical_list: D000497:Alloys; D003722:Dental Alloys; C031462:titanium alloy (TiAl6V4); D010984:Platinum; D000535:Aluminum; D014025:Titanium