NDLI: Surface alloying of Al films/Ti substrate based on high-current pulsed electron beams irradiation

Content Provider	Springer Nature Link
Author	Mei, Xian Xiu Fu, Jian Qiang Li, Xiao Na Rotshtein, V. P. Koval, N. N. Ma, Teng Cai
Copyright Year	2013
Abstract	Ti–Al surface alloy was fabricated using a cyclic pulsed liquid-phase mixing of predeposited 100 nm Al film with α-Ti substrate by low-energy high-current electron beam. Electron probe micro-analysis (EPMA), grazing incidence X-ray diffraction analysis (GIXRD), transmission electron microscopy (TEM), and nanoindentation were used to investigate the characterization of Ti–Al surface alloy. The experimental results show that the thickness of alloy layer is ~3 μm, and the content of Al in the ~1 μm thickness surface layer is ~60 at%. The tetragonal TiAl and TiAl$_{2}$ intermetallics were synthesized at the top surface, which have nanocrystalline structure. The main phase formed in the ~2.5 μm thick surface is TiAl, and there are few TiAl$_{2}$ and Ti$_{3}$Al phase for the alloy. Dislocation is enhanced in the alloyed layer. The nanohardness of Ti–Al surface alloy increased significantly compared with α-Ti substrate due to the nanostructure and enhanced dislocation. Since the e-beam remelted repeatedly, the Ti–Al surface alloy mixed sufficiently with Ti substrate. Moreover, there is no obvious boundary between the alloyed layer and substrate.
Starting Page	155
Ending Page	160
Page Count	6
File Format	PDF
ISSN	10010521
Journal	Rare Metals
Volume Number	33
Issue Number	2
e-ISSN	18677185
Language	English
Publisher	Nonferrous Metals Society of China
Publisher Date	2013-07-11
Publisher Place	Springer Berlin Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ti–Al surface alloy layer High-current pulse electron beam irradiation Microstructural characterization Metallic Materials Nanotechnology Ceramics, Glass, Composites, Natural Methods Surfaces and Interfaces, Thin Films Inorganic Chemistry Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Metals and Alloys Physical and Theoretical Chemistry Condensed Matter Physics

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