引張予歪を与えたα黄銅の応力腐食割れに関する研究

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  • A Study of Stress Corrosion Cracking of Prestrained α-brass
  • ヒッパリ ヨ ワイ オ アタエタ アルファ オウドウ ノ オウリョク フショク ワレ ニ カンスル ケンキュウ
  • A Study of Stress Corrosion Cracking of Prestrained α-brass

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Many studies have been carried out on the stress corrosion cracking susceptibilty and the dislocation arrangement of alloys, particularly in regard to the difference of stress corrosion susceptibility between the alloys which show planar and cellular arrays of dislocations by tensile deformation.<BR>In this study, fracture time tests have been performed on the prestrained brass having various dislocation arrangements.<BR>The dislocation arrays observed in 70-30 brass after tensile deformation are planar at a low strain and cellular at a high strain, irrespective of the prestraining temperature.<BR>The stress corrosion susceptibility is increased by prestraining for all the alloys investigated. The relation between stress corrosion susceptibility and the amount of prestrain shows a different dependence on prestraining temperature. The results indicate that the planar arrays of dislocations are not always more susceptible than the cellular arrays.<BR>A small addition of silicon to 70-30 brass increases the stress corrosion resistance of the annealed specimens. But it is shown that prestraining causes a remarkable increase in the susceptibility of 70-30 brass containing 0.46 wt% Si.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 37 (3), 257-262, 1973

    公益社団法人 日本金属学会

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