時じ効こう硬こう化か

じ

こ

う

こ

う

か

Meanings

noun

age hardening; precipitation hardening

chemistry

Technical term in materials science and metallurgy. Refers to a heat treatment process where a material's hardness and strength increase over time after quenching or cold working, often due to the formation of fine precipitates.

アルミニウム合ごう金きんは時じ効こう硬こう化かによって強きょう度どが向こう上じょうする。
Aluminum alloys gain strength through age hardening.
時じ効こう硬こう化か処しょ理りを施ほどこした鋼こう材ざいは、高たかい耐たい久きゅう性せいを示しめす。
Steel that has undergone precipitation hardening treatment exhibits high durability.

See all 3 example sentences ›

Kanji

時time, hour
効merit, efficacy, efficiency
硬stiff, hard
化change, take the form of, influence

Related words

析せき出しゅつ硬こう化か
析出硬化 is a synonym for precipitation hardening, often used interchangeably with 時効硬化 in metallurgy. 時効硬化 emphasizes the time-dependent aspect of the hardening process.
焼やき入いれ
焼入れ (quenching) is a rapid cooling process that often precedes age hardening. While quenching alone can increase hardness, age hardening further strengthens the material through controlled precipitation over time.

Built from

時じ効こう+硬こう化か

Etymology

Compound of 時効 (じこう, 'aging' or 'time-dependent effect') and 硬化 (こうか, 'hardening'). The term is a direct calque from English 'age hardening' or 'precipitation hardening', reflecting the metallurgical process where material properties change over time.