… A eutectic structure is a metal structure formed by a eutectic reaction, and in a binary alloy, it is a structure in which two solid phases are mixed. It can take a wide variety of forms depending on the constituent elements and solidification conditions, but the most typical form is a layered structure in which each solid phase becomes fine flakes and overlaps each other, called a lamellar eutectic. This is a layered structure in which other constituent solid phases crystallize on both sides of the solid phase nucleus that first crystallized, and the growth direction is perpendicular to the layered direction. … *Some of the terminology explanations that mention "lamellar eutectic" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
… 共晶組織は共晶反応によって形成された金属組織であり,2元系合金においては2種の固相が混じり合った組織である。構成される元素,凝固時の条件等により非常にさまざまな形態をとるが,代表的な形態は各固相が微細な薄片となり互いに重なり合った層状組織で,ラメラー共晶lamellar eutecticと呼ばれる。これは最初に晶出した固相核の両側面に他の構成固相が晶出し,その繰返しによって層状に発達したもので,成長方向は層状方向に垂直である。… ※「lamellar eutectic」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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