高張力鋼SNCM439の応力腐食割れき裂成長におよぼす電極電位の影響とフラクタル特性

フォーマット:

論文

責任表示:

津田, 政明 ; 広瀬, 幸雄 ; 黒瀬, 雅詞 ; 松岡, 三郎 ; 黒部, 利次 ; 田中, 啓介

言語:

日本語

出版情報:

日本材料学会, 1992-07-15

著者名:

津田, 政明

広瀬, 幸雄

黒瀬, 雅詞

松岡, 三郎

黒部, 利次

田中, 啓介

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掲載情報:

材料=Journal of the Society of Materials Science, Japan

ISSN:

0514-5163      

巻:

41

通号:

466

開始ページ:

1178

終了ページ:

1184

バージョン:

publisher

概要:

金沢大学大学院自然科学研究科<br />Stress corrosion tests were conducted by using SNCM439 steel in 3.5% NaCl solution under various cathodic potentials. The crack profiles obtained in these tests were analyzed by fractal geometry. The results obtain … ed were summarized as follows : (1) The more base the cathodic potential is, the slower the crack growth rate becomes and the larger the branching width becomes. (2) The profile of main cracks under cathodic polarization has the fractal character. The fractal dimension measured by the yardstick method is of no significance to the stress intensity factor and polarized electrode potential. (3) The fractal character of stress corrosion crack branching under cathodic polarization measured by the box counting method shows the single region for the case of only micro branching, and it shows the double regions for the case of mixture of micro and macro branching. 続きを見る

URL:

http://hdl.handle.net/2297/12443