Behaviour of Inclusions in Beryllium under Compression at Room Temperature
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概要
- 論文の詳細を見る
The behaviour of inclusions in the vacuum-melted beryllium specimens which were made from pebble and flake metals with or without addition of aluminium, silicon, beryllium oxide, or air has been investigated. Inclusions are round- and stringer-shape aluminium-, silicon-, and iron-rich phases, angular carbide phase, cluster of oxide, and nitride needle. Inclusions of all kinds of shapes except some small ones interact with slip and twin deformation. The following phenomena have been observed : (a) Coherent deformation of the aluminium-rich phase. (b) Separation of inclusions from the matrix. (c) Cleavage of inclusions. (d) Initiation of new slip and twinning in the matrix at the boundary between the inclusion and the matrix. (e) Occurrence of cracks from the boundary into the matrix. (f) When a crack approaches inclusions including a cluster of oxide, the crack is developed, with further deformation accompanying the separation of the inclusions from the matrix and/or the cleavage of the inclusions. (g) However, the crack which causes the metal to fracture is not necessarily a crack such as is developed by an inclusion.
- 東北大学の論文
著者
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Koda Shigeyasu
The Research Institute For Iron Steel And Other Metals
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MOROZUMI Shotaro
The Research Institute for Iron, Steel and Other Metals
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Morozumi Shotaro
The Research Institute For Iron Steel And Other Metals
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