Al-1.2%Si合金の析出硬化に及ぼす試料表面の影響 Effect of specimen surface on the precipitation hardening of an Al-1.2 mass%Si alloy

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Dependence of precipitation hardening and aged structures of an Al–1.2 mass%Si alloy on the distance from specimen surface was studied by microhardness test and transmission electron microscopy. The specimen was water-quenched from 833 K or 853 K to 273 K, held for 60 s and subsequently aged at 373 K, 423 K or 473 K. Rate of age-hardening was slower in the surface layer than in the interior when the specimen was aged at relatively low temperatures (373 K and 423 K) .However the value of maximum hardness in the surface layer became the same as that in the interior. According to the results of electron microscopy, the size of Si phase precipitates formed in the surface layer was smaller than that in the center of specimen aged at 423 K. This difference was considered to be caused by the effect of the surface as a vacancy sink which slowed down the growth of Si phase precipitates near the surface.

収録刊行物

  • 軽金属

    軽金属 47(1), 39-43, 1997-01-30

    The Japan Institute of Light Metals

参考文献:  14件中 1-14件 を表示

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各種コード

  • NII論文ID(NAID)
    10003794869
  • 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
    4118763
  • 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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