耐食軽合金鋳物の腐食疲労および潰食について

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タイトル別名
  • Studies on Corrosion Fatigue and Cavitation Erosion of Corrosion-Resistant Al Casting Alloys
  • タイショク ケイゴウキン イモノ ノ フショク ヒロウ オヨビ カイショク ニ ツイテ

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抄録

In the previous report, the authors described the results of their study the statical and the stress corrosion of 5%Mg-Al casting (AC7A), 10%Mg-Al casting (AC7B) and K.S. Seewasser alloys. To estimate the corrosion resistances of these alloys in practical use, corrosion-fatigue and cavitation-erosion tests were carried out with AC7A and AC7B alloys. The results obtained are summarized as follows: (1) In atmosphere into which 3%NaCl solution was sprayed, the fatigue strength of AC7A and AC7B alloys decreased to almost one-half of the values obtained in ordinary atmosphere. (2) Although the tensile strength of AC7B alloy is superior to AC7A alloy, its fatigue strength in corrosive atmosphere is not superior. And in such an atmosphere, it was found that the fatigue strength of five specimens of AC7A alloy, which differ in foundry condition, is not correlated with their tensile strength,because the former is influenced by the gas occluded in them. (3) Of the specimens prepared under the same conditions, the erosion by magnetostrictive cavitation apparatus occurred almost in inverse proportion to the hardness number. (4) Comparing the erosion of AC7A alloy with that of AC7B alloy, no difference could be accurately determined.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 24 (5), 304-308, 1960

    公益社団法人 日本金属学会

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