Eutectoid transformation point

Japanese: 共析変態点 - きょうせきへんたいてん
Eutectoid transformation point

…(1) Isothermal transformation curve Also called a TTT (time-temperature-transformation) curve. This is a diagram showing the progress of transformation when steel is austenitized, quenched to a suitable temperature below the A1 transformation point (eutectoid transformation point), and held at this temperature, in terms of transformation temperature and time. Transformation at such a constant temperature is called isothermal transformation. …

*Some of the terminology that refers to the "eutectoid transformation point" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…(1)等温変態曲線 TTT(time‐temperature‐transformation)曲線とも呼ばれる。鋼をオーステナイト化し,A1変態点(共析変態点)以下の適当な温度に急冷し,この温度に保持した場合の変態の進行状況を変態温度と時間により示した図である。このような一定温度で変態させることを等温変態isothermal transformationという。…

※「共析変態点」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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