Effects of temperature on fracture behavior of Al-based in-situ composites reinforced with Mg2Si and Si particles fabricated by centrifugal casting

2013 ◽  
Vol 23 (4) ◽  
pp. 923-930 ◽  
Author(s):  
Bo LI ◽  
Kai WANG ◽  
Ming-xiang LIU ◽  
Han-song XUE ◽  
Zi-zong ZHU ◽  
...  
Keyword(s):  
Fracture Behavior ◽  
Centrifugal Casting ◽  
In Situ Composites ◽  
Effects Of Temperature

Fracture Behavior of Vanadium/Vanadium Silicide In-Situ Composites

1992 ◽  
Vol 288 ◽  
Author(s):  
M. J. Strum ◽  
G. A. Henshall
Keyword(s):  
Fracture Behavior ◽  
In Situ Composites

Tensile and Fracture Behavior of NbSS/Nb5Si3 In Situ Composites Prepared by Arc Melting

2005 ◽  
pp. 507-514
Author(s):  
Jin Hak Kim ◽  
Tatsuo Tabaru ◽  
Michiru Sakamoto ◽  
Shuji Hanada
Keyword(s):  
Fracture Behavior ◽  
In Situ Composites ◽  
Arc Melting

Tensile and Fracture Behavior of NbSS/Nb5Si3 In Situ Composites Prepared by Arc Melting

2005 ◽  
Vol 297-300 ◽  
pp. 507-514
Author(s):  
Jin Hak Kim ◽  
Tatsuo Tabaru ◽  
Michiru Sakamoto ◽  
Shuji Hanada
Keyword(s):  
Base Composition ◽  
Fracture Behavior ◽  
Room Temperature ◽  
Secondary Phase ◽  
Secondary Phases ◽  
In Situ Composites ◽  
Arc Melting ◽  
Negative Effect ◽  
Base Composite

Nb-base in-situ composites, which have the base composition of Nb-18Si-5Mo-5Hf, have been investigated in microstructure, hardness (Hv*), Young’s modulus (E), tensile properties and fracture behavior. The microstructures of all composites examined consist of NbSS matrix and Nb5Si3 secondary phases. No secondary phase such as Nb2C appeared. The crystal structure of Nb5Si3 is Mn5Si3-type when C replaces 2mol%-Nb, though typical structures of a (Cr5B3-type) and b (W5Si3-type) as in the base composition when W replaces. W addition is effective in increasing Hv* and E of both phases as expected. However, C alloying is somewhat beneficial only in Nb5Si3 with a noticeable negative effect in NbSS. Furthermore, the composite exhibits the highest strength at 1473 K, while the base composite exhibits the highest at room temperature. The fracture behavior is independent of the compositions and it is controlled by cleavage fractures of Nb5Si3, decohesion of NbSS/Nb5Si3 interface and ductile rupture of NbSS depending on the testing temperatures.

Fracture Resistance in Multiphase Alloys

2007 ◽  
Vol 345-346 ◽  
pp. 611-618
Author(s):  
Kwai S. Chan
Keyword(s):  
Fracture Behavior ◽  
Volume Fraction ◽  
Ductile Phase ◽  
In Situ Composites ◽  
Deformation And Fracture ◽  
Multiphase Alloys ◽  
Solid Solution Matrix ◽  
Alloying Effects ◽  
Solution Matrix

The fracture behavior of Nb-based in-situ composites is reviewed to elucidate the effects of alloy additions on the fracture process in multiphase alloys. The overview paper summarizes the current understanding of the processes by which alloying addition and microstructure alter the near-tip deformation and fracture mechanism, and presents a methodology for predicting the fracture toughness of the constituent phases and the composite. The alloying effects observed in Nb-based in-situ composites can be attributed to changes in dislocation mobility in the metallic solid solution matrix that provides ductile phase toughening in the composites. The size, volume fraction, and the continuity of the intermetallic phases dictate the fracture path and impact significantly the facture toughness of the in-situ composites.

Development and Properties of Cast TiAl Matrix In Situ Composites Reinforced with Carbide Particles

2018 ◽  
Vol 941 ◽  
pp. 1907-1913 ◽  
Author(s):  
Juraj Lapin ◽  
Alena Klimová ◽  
Michaela Štamborská ◽  
Kateryna Kamyshnykova ◽  
Tatiana Pelachová
Keyword(s):  
Centrifugal Casting ◽  
Hot Isostatic Pressing ◽  
Heat Treatments ◽  
Coarse Grained ◽  
Primary Carbide ◽  
In Situ Composites ◽  
In Situ Composite ◽  
Fully Lamellar ◽  
Carbide Particles

TheIn Situcomposites with microstructurally different types of intermetallic matrix such as nearly γ (TiAl) (composite A), multiphase with high amount of lamellar α2(Ti3Al) + γ (TiAl) regions (composite B) and fully lamellar α2+ γ (composite C) were prepared by centrifugal casting and consecutive heat treatments of Ti-44.5Al-8Nb-0.8Mo-3.6C-0.1B, Ti-37Al-7Nb-0.8Mo-5.9C-0.1B and Ti-46.4Al-5Nb-1C-0.2B (at.%) alloys, respectively. The centrifugal casting results in a uniform distribution of coarse primary carbide particles in the as-cast samples. Hot isostatic pressing (HIP) and heat treatments have no effect on the Vickers hardness of the in-situ composite B but lead to a significant softening of the in-situ composites A and C. The in-situ composite C with a coarse-grained fully lamellar matrix shows a higher flow stress at 1000 °C and improved creep resistance at 800 °C compared to those of the in-situ composites A and B.

Processing, Structure and Properties of Heavily Deformed in Situ Composites.

1987 ◽  
Author(s):  
T. H. Courtney ◽  
J. K. Lee
Keyword(s):  
Structure And Properties ◽  
In Situ Composites

Fabrication, characterization and analysis of improvements in mechanical properties of AA7075/ZrB2 in-situ composites

Measurement ◽  
2019 ◽  
Vol 136 ◽  
pp. 356-366 ◽  
Author(s):  
M. Nallusamy ◽  
S. Sundaram ◽  
K. Kalaiselvan
Keyword(s):  
Mechanical Properties ◽  
In Situ Composites
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