[P] P235~265

[P248] Effect of cooling rates after solution heat treatment on aging properties of Al-Zn-Mg alloys

*Tatsuya AONO¹, Shunsuke Araki¹, Tetsuya Ando², Yoshinori Tayu², Mami Mihara-Narita³, Hideo Yoshida⁴, Ken-ichi Ikeda⁵ (1. Muroran Institute of Techonology, 2. Muroran Institute of Techonology, 3. Nagoya Institute of Techonology, 4. ESD Laboratory, 5. Hokkaido University)

Keywords:Aluminum alloy、Precipitation hardening、Aging behavior、Cooling rate

溶体化処理後の冷却速度が低い場合の時効析出挙動や時効硬化機構を解明することを目的とし，Al-Zn-Mg 系合金の時効特性に及ぼす溶体化処理後冷却速の影響を調査した.あわせて自然時効の効果を検証した.