摘要
在保持固态条件下,分别变化加热温度、时间对铝/Q235钢爆炸焊接头进行加热处理.分析了接合界面区反应层形貌等微观特征,探讨了加热温度、加热时间对反应层厚度的影响,研究了接合界面金属间化合物的生长行为.界面反应物是由靠近铝合金侧的反应物为Fe4Al13和靠近钢侧反应物为Fe2Al5构成.金属间化合物层随着加热时间的延长而变厚.结果表明,金属间化合物的生长满足抛物线法则,其生长激活能为33.26kJ/mol.
The explosive welded Al/Q235 joint was annealed under various heating time and temperature keeping the joint stay at solid state condition.The interfacial reaction layer feature was analyzed and the effects of heating temperature and time on the thickness of reaction layer were investigated,the growth of intermetallic compound at the joining interface was studied.The interfacial reaction layer consisting of Fe2Al5 adjacent to steel and Fe4Al13 adjacent to aluminum formed in the joining interface.The thickness of intermetallic compound increased with the longer of heating time.The results show that the growth of intermetallic compound satisfies the parabolic rule and that the growth active energy is 33.26 kJ/mol.
作者
申中宝
邱然锋
石红信
马恒波
SHEN Zhongbao;QIU Ranfeng;SHI Hongxin;MA Hengbo(Henan University of Science and Technology,Luoyang 471023,China;Collaborative Innovation Center of Nonferrous Metals,Luoyang 471003,China)
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2019年第6期58-63,I0003,I0004,共8页
Transactions of The China Welding Institution
基金
国家自然科学基金资助项目(51875177)
关键词
纯铝
低碳钢
生长机制
pure aluminum
mild steel
growth mechanism
