environmental embrittlement

Japanese: environmental embrittlement(英語表記)environmentalembrittlement
environmental embrittlement

…Even such tough metal materials can become brittle like glass or ceramics when certain special conditions overlap, causing cracks and breakage from the surface. The brittleness of a material is called embrittlement, and the embrittlement phenomenon that occurs when the three conditions of the material's sensitivity (the material's inherent properties), the corrosiveness of the environment, and the addition of tensile stress interact synergistically at the same time is called environmental embrittlement, and cracks caused by environmental embrittlement are called stress corrosion cracking (SCC). This is a phenomenon in which the chemical action of corrosion and the physical action of stress work together when the material happens to have a weakness, leading to the destruction of the material. …

*Some of the terminology that refers to "environmental embrittlement" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…このように強靱(きようじん)な金属材料も,ある特別な条件が重なり合うと,ガラスや陶磁器のようにもろくなり,表面からひびが入ったり割れたりする。材料がもろくなることを脆化(ぜいか)と呼んでいるが,とくに材料の感受性(材料の固有の性質),環境の腐食性,引張応力の付加という三つの条件が同時に相乗的に関与したときにおこる脆化現象を環境脆化environmental embrittlementと呼び,環境脆化による割れを応力腐食割れ(SCC)という。腐食という化学的な働きと応力という物理的な働きとが,たまたま材料に弱みがあると協同作用を及ぼし合って,材料を破壊に導く現象である。…

※「environmental embrittlement」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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