Introduction 上游充通大粤 SHANGHAI JIAO TONG UNIVERSITY ©Precipitation: (Co)→o(C1)+B © Slow cooling vs.Quenching M Solution treatment T Quenching a+B T Artificial aging Room Temp. L Natural aging A CI Co B%→ Time→ K.Chen 3K. Chen Precipitation: Slow cooling vs. Quenching Introduction 3 α(C0 ) →α(C1) + β Solution treatment Quenching Artificial aging Natural aging Time Room Temp. Temp