【摘要】 采用差示扫描量热仪对冷变形1052铝合金进行热分析,发现在低于熔点的某一温度区间出现放热峰,经退火实验证明:放热现象由冷变形铝合金发生再结晶所引起,将其称为"再结晶焓"。另外,根据热力学推导出当形变金属发生再结晶时焓变大于零,这也从理论证明了再结晶是放热反应。更多还原

【Abstract】 A thermal analysis experiment of cold deformed aluminum alloy 1052 was carried out using differential scanning calorimetry instrument,it was found that an exothermic peak appeared in a certain temperature range below the melting point.The annealing experiments show that the heat called recrystallization enthalpy in this paper results from the recrystallization of cold deformed aluminum.In addition,it is obtained that the enthalpy change of metal is greater than zero when the recrystallization occurs,which also proves recrystallization is exothermic from theory.更多还原