Mo引張変形組織の透過電子顕微鏡観察

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タイトル別名
  • Transmission Electron Microscopy of Molybdenum Deformed in Tension
  • Mo ヒッパリ ヘンケイ ソシキ ノ トウカ デンシ ケンビキョウ カンサツ

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Dislocation configurations in a commercial molybdenum deformed in tension (1∼11%) at various temperatures (R.T.∼700°C) have been studied by transmission electron microscopy. Dislocations are usually joggy and nonuniformly distributed. Even at small strain many dislocation loops and cusps are observed. As the amount of strain is increased, dislocations become tangled and a cell-structure is clearly developed. The cell dimension seems to depend neither on the amount of strain nor on the temperature of deformation, having a size of 2∼3 μ.<BR>Little changes in general features of dislocation arrangement occur when varied the temperature of deformation. With increase in the temperature of deformation, the average dislocation density decreases, while the dislocation density in cell-walls remains nearly constant within the temperature range examined.<BR>A linear relationship is found between the flow stress and the square root of the average- and/or cell-wall-dislocation density at room-temperature deformation.

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  • 日本金属学会誌

    日本金属学会誌 28 (7), 426-431, 1964

    公益社団法人 日本金属学会

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