Isothermal age-hardening behaviour in a Au-1.6 wt% Ti alloy
This study describes research with a view to developing a new age-hardenable, high-carat dental gold alloy with better biocompatibility by addition of a small quantity of titanium to gold. The relationship between isothermal age-hardening and phase transformation of the Au-1.6 wt% Ti alloy was inves...
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| Veröffentlicht in: | Dental materials journal 1999-03, Vol.18 (1), p.32-41 |
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| container_title | Dental materials journal |
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| creator | Kim, H I Seol, H J Bae, D H Shim, J Y Takada, Y Okuno, O |
| description | This study describes research with a view to developing a new age-hardenable, high-carat dental gold alloy with better biocompatibility by addition of a small quantity of titanium to gold. The relationship between isothermal age-hardening and phase transformation of the Au-1.6 wt% Ti alloy was investigated by means of hardness testing, X-ray diffraction study, scanning electron microscopic observation and energy dispersive spectroscopy. The hardening in the initial stage of ageing seemed to be attributable to the continuous precipitation of the Au4Ti ordered phase in the supersaturated alpha solid solution matrix. The overaging with softening was attributed mainly to the formation of precipitates at the grain boundaries, which grew to bright lamellae and seemed to be composed of the Au4Ti phase. |
| doi_str_mv | 10.4012/dmj.18.32 |
| format | Article |
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| source | MEDLINE; J-STAGE (Japan Science & Technology Information Aggregator, Electronic) Freely Available Titles - Japanese; Open Access Titles of Japan; EZB-FREE-00999 freely available EZB journals |
| subjects | Crystallization Dentistry Differential Thermal Analysis Electron Probe Microanalysis Gold Alloys - chemistry Hardness Hardness Tests Hot Temperature Materials Testing Microscopy, Electron, Scanning Time Factors Titanium - chemistry X-Ray Diffraction |
| title | Isothermal age-hardening behaviour in a Au-1.6 wt% Ti alloy |
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