…The same crystal lattice is divided into two positions, A and B, with Cu preferentially occupying the A positions and Au preferentially occupying the B positions, and when the temperature drops below a certain critical temperature, the entire crystal simultaneously adopts this regular structure. This is called an order-disorder transformation or an order-disorder transformation. An alloy that is highly ductile in a disordered solid solution becomes hard and brittle when it becomes an ordered solid solution (ordered lattice). … *Some of the terminology explanations that refer to "regular and irregular metamorphosis" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…同じ結晶格子をA位置とB位置の二つに区別してA位置はCuが優先して占有し,B位置はAuが優先して占有するということで,ある臨界温度以下になると結晶全体でいっせいにこのような規則的構造をとる。このことを規則・不規則変態あるいは秩序・無秩序変態という。 無秩序固溶体では展延性に富む合金が,秩序固溶体(規則格子)になると硬くもろい性質を示すようになる。… ※「規則・不規則変態」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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