Laser-induced exothermic bonding of carbon fiber/Al composites and TiAl alloys
作者： Guangjie Feng , Zhuoran Li , Rohit J. Jacob , Yong Yang , Yu Wang
DOI: 10.1016/J.MATDES.2017.04.044
关键词: Shear strength 、 Exothermic reaction 、 Microstructure 、 Layer (electronics) 、 Materials science 、 Composite material 、 Welding 、 Nial 、 Nickel titanium 、 Joint (geology)
摘要: Abstract In this paper, a highly-efficient method for bonding Carbon Fiber (C f )/Al composites and TiAl alloys was developed by means of laser-induced exothermic reaction Ni-Al-Ti interlayer. To examine the interlayer performance, adiabatic temperature calculated temperatures were measured. Based on SEM, XRD TEM, interfacial reactions between carbon fiber products investigated. Results show that addition Ti enhanced fibers products. The resulting formation 300–400 nm thin Ti-C layer at NiAl 3 /carbon interface identified as key player in improving joining quality C /Al side. typical structure joint is /Al)/Ti-C/NiAl /Ni 2 Al /(NiAl + Al NiTi /TiAl. mechanism discussed. addition, effect content microstructure mechanical properties joints investigated detail. optimum value found to be 5 wt.%, leading defect-free maximum shear strength 45.8 MPa.
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