Effect of Heat Treatment Temperatures on the Interface Microstructures and Properties of Al-Al-steel and Al-Ti-steel Explosive Clad Plates
MU Xiaobiao1,2, PAN Tao2, XIONG Wei1, CHAI Xiyang2,*, LUO Xiaobing2, CHAI Feng2
1 State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China 2 Department of Structural Steels, Central Iron and Steel Research Institute, Beijing 100081, China
Abstract: In order to evaluate the reliability of Al-Al-steel and Al-Ti-steel explosive clad plates, the property stability and microstructure evolution of Al-steel and Al-Ti interface were compared under different heat treatment temperature. The Al-Al-steel and Al-Ti-steel clad plates were heat treated at 250—550 ℃ for 1 h in a box resistance furnace. After heat treatment, the shear properties and tensile properties of clad plates were tested. The evolution of the interfacial reaction phases was characterized by SEM and HRTEM. The results show that interface microstructure and property of Al-Ti-steel clad steel has more excellent heat stability. The heat treatment temperature damage to the interface performance is smaller and the damage speed is slower for Al-Ti-steel. The continuous intermetallic compounds appeared in Al-steel interface is above 450 ℃. The phase types are Fe2Al5 and Fe4Al13. The Ti-Al intermetallic compounds discontinuously appeared in Al-Ti interface is 500 ℃ and forms a conti-nuous layer product at 550 ℃, and the type is TiAl3. The thickness of the Al-steel interface product is much greater than the thickness of the Al-Ti interface reaction product. Meanwhile, the thermodynamics and kinetics of reaction phase formation in Fe-Al and Ti-Al systems were analyzed. It was found that the interface reaction driving force of Ti-Al system was smaller than that of Fe-Al system, and the diffusion reaction rate was slower, which may be the main reason for the better microstructure and performance stability of Al-Ti interface.
通讯作者:
*柴希阳,钢铁研究总院工程用钢研究所高级工程师。2011年武汉科技大学金属材料工程专业毕业,2014年钢铁研究总院材料学硕士毕业,2018年清华大学材料科学与工程专业毕业,毕业后进入到钢铁研究总院工程用钢所工作至今。目前主要从事船体结构钢、双金属复合材料、微合金化、控轧控冷、高温氧化等方面的研究工作。发表论文20余篇,包括Material Letters、Journal of Iron and steel Research、《稀有金属材料工程》《工程学报等》。 chaixiyang0728@163.com
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2023, Vol. 37 
