微观结构
金属间化合物
纳米晶材料
材料科学
共晶体系
合金
腐蚀
冶金
相(物质)
铝化钛
钛合金
化学
纳米技术
有机化学
作者
Shengfeng Zhou,Yongbo Xu,Bangquan Liao,Yajuan Sun,Xiaoqin Dai,Hongbo Pan
标识
DOI:10.1016/j.jallcom.2018.07.276
摘要
The Ti-Fe-based alloys were in-situ synthesized by the combination of mechanical alloying and laser melting deposition (LMD). The microstructure evolution and corrosion behaviors of Ti50Fe50 and Ti40Fe50Cu10 alloys were also investigated. The results show that mechanical alloying of Ti and Fe elemental mixtures induces the formation of intermetallic TiFe, Ti-rich amorphous phase and α-Fe(Ti) solid solution and that the addition of Cu can refine the size of nanocrystalline TiFe phase. Although LMD-produced Ti50Fe50 and Ti40Fe50Cu10 alloys are composed of TiO dendrites and α-Fe/TiFe2 (hexagonal MgZn2-type Laves structure) eutectic, the addition of Cu can refine the TiO dendrites, induce the formation of TiO2 particles and dissolve into the TiFe2 phase in the Ti40Fe50Cu10 alloy. As a result, the LMD-produced Ti40Fe50Cu10 alloy exhibits higher corrosion resistance than the LMD-produced Ti50Fe50 alloy.
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