Age-hardening behavior in a palladium-base dental porcelain-fused alloy

Kunihiro Hisatsune, Masayuki Hasaka, Bambang Irawan Sosrosoedirdjo, Koichi Udoh

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Age hardening in a Palladium-base porcelain-fused alloy was investigated by hardness tests, x-ray diffraction, scanning, and transmission electron microscopy. In the early stages of aging, a metastable ordered phase with a face-centered tetragonal structure based on Pd3In was formed within the grains. Hardening was due to coherency strain between the metastable structure and the matrix with a face-centered cubic structure. In the later stages, a lamellar structure, consisting of a stable ordered phase with a face-centered tetragonal structure based on Pd3In and a stable phase with a face-centered cubic structure, grew from the grain boundaries. Finally, the lamellae covered the whole grain and resulted in softening.

Original languageEnglish
Pages (from-to)177-184
Number of pages8
JournalMaterials Characterization
Volume25
Issue number2
DOIs
Publication statusPublished - 1 Jan 1990

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