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Formation and wear behaviors of in-situ Al 3 Ti/Al composites using aluminum and titanium fibers under electromagnetic induction heating
Journal of Central South University ( IF 3.7 ) Pub Date : 2020-10-06 , DOI: 10.1007/s11771-020-4500-1
Jun Ma , Li-bin Niu , Hong Wu , Chong Gao , Yu-jiao An

Under various electromagnetic induction heating powers, different Al3Ti/Al composites were fabricated by in-situ synthesis method from aluminum and titanium fibers. Microstructures and particles distribution of the composites were examined by XRD, SEM and EDS. The results show that no other intermetallic compounds beside Al3Ti can be in-situ synthesized. Around the titanium fibers, the reaction zones and diffusion zones can be obviously found. Due to the stirring of the electromagnetic function, the formation of the micro-cracks inside the reaction zone was conducive to the peeling off of the Al3Ti particles, and ensures the continuous reaction between liquid aluminum and titanium fibers, as well as the diffusion of Al3Ti particles. At the same time, there were secondary splits of Al3Ti particles located in diffusion zones. Two-body abrasion test shows that with the increase of induction heating power, the wear rates of the composites reduced and the number of grooves decreased.



中文翻译:

铝和钛纤维在电磁感应加热下原位Al 3 Ti / Al复合材料的形成和磨损行为

在各种电磁感应加热功率下,通过原位合成方法由铝和钛纤维制备出不同的Al 3 Ti / Al复合材料。通过XRD,SEM和EDS检查了复合材料的微观结构和颗粒分布。结果表明,除了Al 3 Ti以外,其他金属间化合物均不能原位合成。在钛纤维周围,可以明显地发现反应区和扩散区。由于电磁功能的搅拌,反应区内微裂纹的形成有利于Al 3 Ti颗粒的剥离,并确保液态铝和钛纤维之间的连续反应以及扩散。铝3钛颗粒。同时,在扩散区中存在Al 3 Ti颗粒的二次分裂。两体磨损试验表明,随着感应加热功率的增加,复合材料的磨损率降低,沟槽数量减少。

更新日期:2020-10-06
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