On the Important Effect of Water Vapor in the Atmosphere on Void Formation in Quenched Pure Aluminum

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概要

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• Zone-refined and nominally 99.999% pure aluminum foil specimens were rapidly quenched in hydrogen, helium and nitrogen. Two different heating methods, current heating and furnace heating, were employed. With the current heating, voids were observed in almost all quenched specimens, and with furnace heating, a large number of voids were observed only in the specimens heated in hydrogen and quenched. No voids were observed in specimens heated in helium or nitrogen and quenched into silicone oil. These results suggest that water vapor evaporated from distilled water or the chamber wall has great effect on the formation of voids. Without the effects of water vapor, the number density of voids in specimens quenched in hydrogen is proportional to the square root of the partial pressure of hydrogen. It is concluded that a small vacancy cluster which contains a hydrogen atom grows to a void.

• 社団法人応用物理学会の論文
• 1981-12-05

著者

• Shimomura Yoshiharu

  Applied Physics And Chemistry Faculty Of Engineering Hiroshima University

• Kitagawa Kunihiko

  Applied Physics And Chemistry Faculty Of Engineering Hiroshima University

• M0RITAKI Yoshiziro

  Faculty of Engineering, Hiroshima Institute of Technology

• M0ritaki Yoshiziro

  Faculty Of Engineering Hiroshima Institute Of Technology

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• The Effects of Repeated Electron Irradiation for the Formation of Interstitial Loops in Pure Aluminum
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• Formation of Voids in Pure Aluminum Quenched in Hydrogen Gas
• Dependence of the Growth Rate of Interstitial Loops on Irradiated Crystallographic Directions in Electron Irradiated Pure Aluminum
• Point Defect Clusters at a Twin Boundary in Pure Aluminum
• On the Important Effect of Water Vapor in the Atmosphere on Void Formation in Quenched Pure Aluminum

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