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Transmission electron microscopy study of precipitates in a NiAl-TiB 2 composite
A TiB2 particle-reinforced NiAl alloy composite was fabricated by hot-pressing aided exothermic synthesis. The microstructures of the composite were investigated by transmission electron microscopy (TEM). The experimental results show that a fcc phase with lattice constant a=1.05 nm precipitated in the TiB2/NiAl composite. TEM energy dispersive X-ray (EDX) spectroscopy (Philips, CM200 FEG, spot size: 5 nm) analysis on this fcc phase indicated that it contains the elements Ni, Al and B with near atomic ratio 20:3:6, thus, this fcc phase is a boride, Ni20Al3B6.
Transmission electron microscopy study of precipitates in a NiAl-TiB 2 composite
A TiB2 particle-reinforced NiAl alloy composite was fabricated by hot-pressing aided exothermic synthesis. The microstructures of the composite were investigated by transmission electron microscopy (TEM). The experimental results show that a fcc phase with lattice constant a=1.05 nm precipitated in the TiB2/NiAl composite. TEM energy dispersive X-ray (EDX) spectroscopy (Philips, CM200 FEG, spot size: 5 nm) analysis on this fcc phase indicated that it contains the elements Ni, Al and B with near atomic ratio 20:3:6, thus, this fcc phase is a boride, Ni20Al3B6.
Transmission electron microscopy study of precipitates in a NiAl-TiB 2 composite
Shen, G.J. (author) / Cao, G.H. (author) / Liu, Z.G. (author)
Materials Characterization ; 47 ; 39-42
2001
4 Seiten, 14 Quellen
Article (Journal)
English
Nickellegierung , Mikrostruktur , intermetallische Verbindung , Gitterkonstante (Kristallgitter) , Heißpressen , mechanische Verstärkung , Spektroskopie , Transmissionselektronenmikroskopie , energiedispersive Spektrometrie , Nickelaluminid , Titanborid , partikelverstärkter Verbundwerkstoff , Metallmatrix-Verbundwerkstoff , Ausscheidungsprodukt
Transmission electron microscopy image analysis of composite precipitates in Al-Li-Zr alloys
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