引張変形した Al-Zn-Mg 合金中の水素挙動

• 真中 俊明

  茨城大学大学院理工学研究科物質科学専攻

• 伊藤 吾朗

  茨城大学工学部機械工学科

書誌事項

タイトル別名

• Hydrogen Behavior in a Tensile-Deformed Al-Zn-Mg Alloy
• ヒッパリ ヘンケイ シタ Al-Zn-Mg ゴウキン チュウ ノ スイソ キョドウ

抄録

 Behavior of hydrogen in a tensile-deformed Al-Zn-Mg alloy was investigated by means of hydrogen microprint technique, HMPT, which is a method to visualize location of hydrogen emission from the surface as silver particles. Hydrogen was introduced into the test pieces from one side by cathodic electrolytic charging for 30 min. Then, the test pieces were stretched with continuing the charging, followed by HMPT observation on the other side. Hydrogen evolution was observed on some grain boundaries where the surface relief was formed. Discussion was made considering preferential plastic deformation in precipitate free zones, PFZs, and the geometrical relationship of the boundaries with tensile axis and with slip band inside grains. The results indicated that the shear deformation along grain boundary caused transportation of hydrogen atoms with gliding dislocations to the surface, breakage of surface oxide film, formation of surface relief and then the emission of hydrogen atoms. It was suggested that the preferential deformation in the precipitate free zone was attributed to hydrogen evolution.<br>

収録刊行物

• 日本金属学会誌

  日本金属学会誌 80 (12), 726-730, 2016

  公益社団法人 日本金属学会

キーワード

• aluminum-zinc-magnesium alloy
• hydrogen embrittlement
• hydrogen microprint technique
• hydrogen atoms

詳細情報

• CRID: 1390282681458357888
• NII論文ID: 130005284316
• NII書誌ID: AN00187860
• DOI: 10.2320/jinstmet.jd201605
• ISSN: 18806880
• ISSN: 24337501
• ISSN: 00214876
• NDL書誌ID: 027772976
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I027772976
• Web Site: https://www.jstage.jst.go.jp/article/jinstmet/80/12/80_JD201605/_pdf
• 本文言語コード: ja
• データソース種別:
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