Microstructure and mechanical properties of nanocrystalline WC-particle-reinforced Ti-based composites with nano/ultrafine-grained intermetallic matrix from spark plasma sintering and crystallization of amorphous phase

2012 ◽  
Vol 103 (5) ◽  
pp. 613-619 ◽  
Author(s):  
C. Yang ◽  
T. Wei ◽  
L. H. Liu ◽  
S. G. Qu ◽  
X. Q. Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Spark Plasma Sintering ◽  
Amorphous Phase ◽  
Intermetallic Matrix ◽  
Microstructure And Mechanical Properties ◽  
Plasma Sintering ◽  
Ultrafine Grained ◽  
Spark Plasma

Ultrafine-grained Ti66Nb13Cu8Ni6.8Al6.2 composites fabricated by spark plasma sintering and crystallization of amorphous phase

2009 ◽  
Vol 24 (6) ◽  
pp. 2118-2122 ◽  
Author(s):  
Y.Y. Li ◽  
C. Yang ◽  
W.P. Chen ◽  
X.Q. Li ◽  
S.G. Qu
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Spark Plasma Sintering ◽  
Amorphous Phase ◽  
Fracture Strength ◽  
High Fracture ◽  
Plasma Sintering ◽  
Ultrafine Grained ◽  
Spark Plasma

We report on the formation of ultrafine-grained Ti66Nb13Cu8Ni6.8Al6.2 composites with in situ precipitated micrometer-sized β-Ti(Nb) phase by spark plasma sintering with crystallization. Microstructure analysis indicated that all alloys consisted of soft (Cu, Ni)Ti2 regions surrounded by hard β-Ti(Nb) regions but displayed different microstructures. The alloys exhibited high fracture strength of more than 2200 MPa and remarkable plasticity of ∼25%. The results provided a promising method for fabricating large-sized bulk composites with excellent mechanical properties by powder metallurgy.

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