書誌事項
- タイトル別名
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- Effect of Potassium Concentration on Threshold Stress during Creep at High Temperatures in Doped Tungsten Fine Wires
- ドープタングステンサイセン ノ コウオン クリープ チュウ ノ シキイ オウリョク ニ オヨボス カリウム ノウド ノ エイキョウ
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抄録
It is investigated how sliding and cavitation at grain boundaries have an effect on the measurement of threshold stress σT. The effect of the potassium concentration on σT is then clarified under the condition that such effects resulting from grain boundaries are almost negligible. The flow stresses and the hardness of grain interiors, which are obtained at high and room temperatures, respectively, using tungsten fine wires of secondary recrystallized grains arranged in a simple morphology, increase with increasing potassium concentration. It is shown that if grain morphology is arranged in a way that makes it free from grain boundary sliding and cavitation, the threshold stress can be measured by abrupt stress change tests during creep and increases with potassium concentration. However, it is also noted that the effect of σT on the creep rate is much less than that caused by the change of grain morphology.
収録刊行物
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- 日本金属学会誌
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日本金属学会誌 66 (2), 75-80, 2002
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390001206491195648
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- NII論文ID
- 130007341798
- 10009395472
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- NII書誌ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL書誌ID
- 6085852
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- データソース種別
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- JaLC
- NDL
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