Annealing - annealing

Japanese: 焼きなまし(焼鈍し) - やきなまし(英語表記)annealing
Annealing - annealing
A type of heat treatment. Also called annealing. A general term for the process of heating to a high temperature to achieve thermal equilibrium. Usually, this process is accompanied by slow cooling after heating, which softens the material. When combined with quenching to improve the material's hardness, toughness, etc., this process is called tempering. Originally, the term quenching-tempering meant heating steel that has been hardened by plastic deformation to a red heat, then placing it in straw ash to slowly cool and soften it. This is now called complete annealing of steel, and corresponds to the production of relatively coarse pearlite from austenite.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
熱処理の一種。焼鈍(しようどん)ともいう。熱的に平衡な状態になるように高温に加熱する操作の総称。通常は加熱後の徐冷を伴い,これによって材料は軟化する。焼入れと組み合わせて材料の硬さ,靱性(じんせい)などの向上を目的として行うときには,この操作を焼戻しと呼ぶ。もともとは焼入れ‐焼戻し,塑性変形などによって硬化した鋼を赤熱させた後,わら灰の中に入れるなどして徐冷し,軟化させることを意味した。これは現在,鋼の完全焼きなましと呼ばれるものであり,〈オーステナイト〉から比較的粗い〈パーライト〉を生成させることに対応する。

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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