Al-Mg-Si系合金の張出成形性 Stretchability in Al-Mg-Si alloys

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In order to reveal the controlling factors of stretchability in Al–Mg–Si alloys, the Erichsen tests, tensile tests and metallographic observations were carried out. There appeared to be little correlation between tensile elongation and the Erichsen value and good correlation between 0.2% proof stress and the Erichsen value. The Erichsen value increased with the decrease of 0.2% proof stress and increased with the decrease of grain size. Fractographic observation revealed that the frequency of the occurrence of intergranular fracture increased with the increase of 0.2% proof stress, and that the fractography changed from intergranular fracture to transgranular fracture by the grain refinement. Dimple patterns were observed on the intergranular fractured surface and it suggested that precipitates on the grain boundary caused ruptures. These results showed that the decrease of precipitates on the grain boundary or the refinement of grain size was effective for the improvement of stretchability in Al–Mg–Si alloys.

収録刊行物

  • 軽金属

    軽金属 46(1), 33-38, 1996-01-30

    The Japan Institute of Light Metals

参考文献:  8件中 1-8件 を表示

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各種コード

  • NII論文ID(NAID)
    10003793368
  • NII書誌ID(NCID)
    AN00069773
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    04515994
  • NDL 記事登録ID
    3918062
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-284
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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