AZ91マグネシウム合金の機械的性質に及ぼす凝固組織の影響 Effect of solidified microstructures on mechanical properties of AZ91 magnesium alloy

この論文にアクセスする

この論文をさがす

著者

抄録

An AZ91 alloy was preparded by a gravity casting process with either constant grain size or constant cooling rate. The as-cast alloys show good mechanical properties with decreasing dendrite arm spacing (DAS) or grain size. These phenomena are possibly explaned by the fact that cracks do not easily propagate in the brittle eutectic Mg<sub>17</sub>Al<sub>12</sub> compounds due to the fine compounds. The ultimate tensile strength (UTS), 0.2% proof stress (PS) and elongation (E<sub>f</sub>) at fracture of the T6 treated alloys increase with decreasing grain size. But the UTS and E<sub>f</sub> of the alloy remain almost constant with decreasing DAS, while the PS increases with decreasing DAS. These phenomena in the T6 treated alloys are explained by assuming that (1) the stress concentration at a grain boundary is higher with larger grain size, (2) the density of grain boundaries which act as obstacles during crack propagation is higher with smaller grain size and (3) the homogenization is easily achieved in a shorter solution heat-treatment time with a small DAS.

収録刊行物

  • 軽金属

    軽金属 47(3), 133-138, 1997-03-30

    The Japan Institute of Light Metals

参考文献:  7件中 1-7件 を表示

  • <no title>

    佃誠

    軽金属 29, 437, 1979

    被引用文献1件

  • <no title>

    マグネシウム委員会

    マグネシウム便覧 55, 1975

    被引用文献4件

  • <no title>

    鎌土重晴

    軽金属 37, 716, 1987

    被引用文献1件

  • <no title>

    堀茂徳

    軽金属 44, 231, 1994

    被引用文献1件

  • <no title>

    鈴木秀次

    金属の強さ 254, 1981

    被引用文献1件

  • <no title>

    加藤一

    軽金属 32, 477, 1981

    被引用文献1件

  • <no title>

    佐々木寛人

    機論 62-600, 1806, 1996

    被引用文献1件

被引用文献:  3件中 1-3件 を表示

各種コード

  • NII論文ID(NAID)
    10003795103
  • 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
    4172733
  • 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 
ページトップへ