The structure between TaC fibers and matrix interface in a Ni, Cr, Al-TaC in situ composite

2004 ◽  
Vol 58 (6) ◽  
pp. 1130-1133
Author(s):  
Yu Jinjiang ◽  
Zhang Jun ◽  
Li Jinguo ◽  
Fu Heng Zhi ◽  
Hu Zhuangqi
Keyword(s):  
Matrix Interface ◽  
In Situ Composite

Development of The γ-γ'-Cr3C2 In-Situ Composite

1981 ◽  
Vol 12 ◽  
Author(s):  
M. Mclean ◽  
P.N. Quested ◽  
P.J. Henderson ◽  
K. Menzies
Keyword(s):  
Thermal Analysis ◽  
Differential Thermal Analysis ◽  
Composition Range ◽  
High Growth ◽  
Matrix Interface ◽  
Wide Composition Range ◽  
In Situ Composite ◽  
Phase Alignment ◽  
Additional Phase

ABSTRACTThe effects of various alloy additions to the microstructures and properties of the γ-γ'-Cr3C2 in-situ composite have been investigated. Combinations of platinum and Yttrium prevent the formation of an additional phase that occurs when Yttrium alone is added; the phase morphology is unaffected by rhenium and ruthenium dopants.Combined quenching studies and differential thermal analysis show that phase alignment at high growth rates in this alloy is not due to plane front solidification but to highly branched carbide growth ahead of the melt/ matrix interface. This mechanism allows good phase alignment to be achieved over a wide composition range. Tests on six alloy casts to commercial specifications indicate retention of, and often improvement to, the microstructures and properties obtained with laboratory control.

Hydrogen-induced amorphization and embrittlement resistance in Ti-based in situ composite with bcc-phase in an amorphous matrix

2007 ◽  
Vol 22 (2) ◽  
pp. 428-436 ◽  
Author(s):  
S. Jayalakshmi ◽  
J.P. Ahn ◽  
K.B. Kim ◽  
E. Fleury
Keyword(s):  
Hydrogen Embrittlement ◽  
Amorphous Alloys ◽  
Amorphous Matrix ◽  
Mechanical Tests ◽  
High Concentration ◽  
High Hydrogen ◽  
In Situ Composite ◽  
Bcc Phase ◽  
Embrittlement Resistance

We report the hydrogenation characteristics and mechanical properties of Ti50Zr25Cu25 in situ composite ribbons, composed of β-Ti crystalline phase dispersed in an amorphous matrix. Upon cathodic charging at room temperature, high hydrogen absorption up to ∼60 at.% (H/M = ∼1.2) is obtained. At such a high concentration, hydrogen-induced amorphization occurs. Mechanical tests conducted on the composite with varying hydrogen concentrations indicate that the Ti50Zr25Cu25 alloy is significantly resistant to hydrogen embrittlement when compared to conventional amorphous alloys. A possible mechanism that would contribute toward hydrogen-induced amorphization and hydrogen embrittlement is discussed.

Phase relationships in Nb - 18.7 a/o Si in-situ composite

1991 ◽  
Vol 25 (9) ◽  
pp. 2109-2114 ◽  
Author(s):  
B. Cockeram ◽  
H.A. Lipsitt ◽  
R. Srinivasan ◽  
I. Weiss
Keyword(s):  
In Situ Composite ◽  
Phase Relationships

Dry sliding wear behaviour of AA 6351-ZrB2 in situ composite at room temperature

2010 ◽  
Vol 31 (3) ◽  
pp. 1526-1532 ◽  
Author(s):  
G. Naveen Kumar ◽  
R. Narayanasamy ◽  
S. Natarajan ◽  
S.P. Kumaresh Babu ◽  
K. Sivaprasad ◽  
...  
Keyword(s):  
Sliding Wear ◽  
Room Temperature ◽  
Wear Behaviour ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
In Situ Composite ◽  
Sliding Wear Behaviour

Manufacture and Microstructures of Fe-Cr-C Hypereutectic In Situ Composites

2007 ◽  
Vol 336-338 ◽  
pp. 1406-1408 ◽  
Author(s):  
Xiao Hui Zhi ◽  
Jian Dong Xing ◽  
Yi Min Gao ◽  
Xiao Jun Wu ◽  
Xiao Le Cheng
Keyword(s):  
Hypereutectic Alloy ◽  
Reinforced Composites ◽  
In Situ Composites ◽  
In Situ Composite ◽  
Particle Reinforced Composites ◽  
Primary Carbides

In the present study, a Fe-Cr-C hypereutectic alloy was prepared from industry-grade materials and subjected to modification and fluctuation, through which new types of particle reinforced composites, hypereutectic in-situ composite, was generated. The structures of the composite modified or not with the range of fluctuation addition from 0% to 2.8wt.%, were investigated. The primary carbides were refined with the addition of modifying agents and fluctuations. Increasing the amount of fluctuation resulted in finer primary carbides. At 1380oC, with the addition of modifying agents and 2.8wt.% fluctuation addition, the structure was well modified.

In-Situ Composite Processes from PEI/TLCP Blends

1998 ◽  
pp. 61-73
Author(s):  
S. S. Hwang ◽  
S. M. Hong ◽  
Y. Seo ◽  
K. U. Kim
Keyword(s):  
In Situ Composite
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