書誌事項
- タイトル別名
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- Fabrication of Sintered Titanium Alloy with Heat-Resistance.
- タイネツセイ オ ユウスル ショウケツ Ti ゴウキン ノ セイゾウ
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Sintering behavior and microstructures of Ti-(5-10)mass%Al-(1-10)mass%Mo alloy compacts prepared by the technique of mixing Ti, TiAI and Mo powders were investigated by means of optical microscopy. Mechanical properties of the sintered materials were also examined in connection with microstructures.<BR>Addition of (5-10)mass%A1 and (1-10)mass%Mo contributes to sintering densification of titanium compact, since the particle size of TiAI and Mo powders are much finer than that of Ti powder. While, the diffusion of Al and Mo atoms into titanium matrix greatly depend on temperature, so that the powder compacts have to be sintered for 3.6ks at a temperature above 1573K to obtain homogeneous materials in the chemical composition. The structure of compacts is of β (bcc) single-phase at 1573K, but a (hcp) phase precipitates during cooling from the sintering tempereature. When Al content is more than 8mass%, Ti3Al can also precipitate and this makes the sintered materials brittle. On the other hand, when Mo content is more than 6mass%, a phase preferentially precipitates along grain boundary and this results in a decrease of elongation attributed to intergranular fracture. As a result of alloy design, Ti-8mass%Al-4mass%Mo alloy with fine two-phase structure of (α+β) was selected to obtain optimal tensile properties at both temperature of room temperature and 873K.
収録刊行物
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- 粉体および粉末冶金
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粉体および粉末冶金 44 (12), 1089-1094, 1997
一般社団法人 粉体粉末冶金協会
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詳細情報
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- CRID
- 1390001206308353152
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- NII論文ID
- 10002014659
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- NII書誌ID
- AN00222724
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- ISSN
- 18809014
- 05328799
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- NDL書誌ID
- 4380695
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- 抄録ライセンスフラグ
- 使用不可