In-situ TiB 2 particles can be synthesized via the salts-Al reaction by adding mixed K 2 TiF 6 and KBF 4 (Ti/B=1/2) salts into Al melt. In this research, a novel electroslag melting technology was proposed to synthesize TiB 2 particles by the salts-Al reaction in order to reduce the reaction time period and purify the melt of composite. The effects of current of electroslag melting on the synthesis of TiB 2 particles and mechanical properties of composite were investigated. The results showed that TiB 2 particles could be in-situ synthesized by electroslag melting at 600 A for 15min. Compared with 60 min at 850°C of traditional LSM method, the efficiency of preparation was greatly improved. In addition, the dispersion of TiB 2 particles in the composite prepared by electroslag melting was improved, meanwhile the non-metallic inclusions in the composite was reduced. The values of YS, UTS and El pct of composite prepared by electroslag melting were higher than that of the composite prepared by traditional LSM method.

中文翻译：

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电渣熔化制备原位TiB2 / Al复合材料的研究

通过将混合的K 2 TiF 6和KBF 4（Ti / B = 1/2）盐添加到Al熔体中，可以通过盐-Al反应合成原位TiB 2颗粒。为了缩短反应时间，净化复合材料的熔体，提出了一种新型的电渣熔融技术，通过盐-Al反应合成TiB 2颗粒。研究了电渣熔化电流对TiB 2颗粒合成及复合材料力学性能的影响。结果表明，电渣在600 A下熔融15min可以原位合成TiB 2颗粒。与传统的LSM方法在850°C下60分钟相比，制备效率大大提高。另外，改善了电渣熔融制得的复合材料中TiB 2颗粒的分散性，同时减少了复合材料中的非金属夹杂物。电渣熔融法制备的复合材料的YS，UTS和El pct值均高于传统LSM法制备的复合材料的YS，UTS和El pct值。