变形量对Cu-Ni-Si合金再结晶行为的影响
Journal of Henan University of Science & Technology(Natural Science)(2012)
Abstract
对经过二级变形时效处理后的Cu-Ni-Si合金进行不同变形量的冷变形后,再进行退火处理,研究了变形量对合金抗软化性、再结晶组织和再结晶动力学行为的影响。研究结果表明:再结晶晶粒在晶界处形成,大的变形量能够提高再结晶的形核速率。经40%变形的合金的软化温度为470℃,再结晶温度在550℃左右;在400℃退火时,合金发生再结晶的激活能为162 kJ/mol。再结晶的激活能随变形量的增加而降低,当变形量由40%增至80%时,再结晶激活能由162 kJ/mol降至140 kJ/mol。
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Key words
Annealing,Resistance to softening property,Cu-Ni-Si alloy,Recrystallization kinetics
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