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。
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.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2013年第9期42-46,共5页
Transactions of Materials and Heat Treatment
基金
江苏省第四期"333工程"培养资金资助项目(BRA2011037)
江苏省"六大人才高峰"资助项目(2012-ZBZZ-007)
住房与城乡建设部研究开发项目(2013-K4-28)
徐州工程学院校级科研项目(XKY2012101
XKY2012211)
关键词
DSC分析
再结晶焓
熵变
焓变
DSC analysis
recrystallization enthalpy
enthalpy change
entropy change
