title: Phase transformation behavior in a multipurpose dental casting gold alloy during continuous heating.
abstract: Phase transformation in a multipurpose dental casting gold alloy during continuous heating was studied by electrical resistivity measurements, hardness tests, X-ray diffraction and scanning and transmission electron microscopy. The behavior can be explained by the following reaction sequences in the nodule: alpha1(fcc) + alpha2(L1(2)) --> alpha1(fcc) + alpha2(L1(2)) + beta(L1(0)), where fcc is face centred cubic. A discontinuous precipitation with very fine nodules contributed to the hardening and the growth produced the softening. This multipurpose gold alloy is characterized by the introduction of a PtZn ordered phase with L1(0) structure instead of a CuAu I phase.
authors.affiliation: Department of Dental Materials, College of Dentistry, Pusan National University, 1-10 Ami-dong, Seo-gu, Pusan 602-739, Korea.
authors.forename: H I
authors.initials: HI
authors.lastname: Kim
authors.forename: H J
authors.initials: HJ
authors.lastname: Seol
authors.forename: K
authors.initials: K
authors.lastname: Hisatsune
authors.lastname: Htain-Winn
authors.forename: A A
authors.initials: AA
authors.lastname: Sakrana
authors.forename: Y
authors.initials: Y
authors.lastname: Takuma
authors.forename: K
authors.initials: K
authors.lastname: Kawasaki