Microstructural development of SCS-6 SiC fibers during high temperature creep

1998 ◽  
Vol 13 (7) ◽  
pp. 1853-1860 ◽  
Author(s):  
Lucille A. Giannuzzi ◽  
Charles A. Lewinsohn ◽  
Charles E. Bakis ◽  
Richard E. Tressler
Keyword(s):  
High Temperature ◽  
Grain Growth ◽  
Creep Deformation ◽  
Phase Region ◽  
Microstructural Development ◽  
High Temperature Creep ◽  
Two Phase ◽  
Excess Carbon ◽  
Sic Fibers ◽  
Temperature Creep

Microstructural development of SCS-6 SiC fibers induced by creep deformation at 1400 °C is presented. Grain growth occurs in all SiC regions of the fiber during creep. Portions of the SiC4 region transform from βSiC to αSiC growing at the expense of the βSiC. The SiC1 through SiC3 regions of the fiber consist of a distinct (C + βSiC) two-phase region. The grain growth of the βSiC grains in the two-phase region is not as extensive as in the SiC4 region, suggesting that the presence of excess carbon may inhibit the growth of βSiC.

High Temperature Creep Deformation of Si-Ti-C-O Fiber/SiC Matrix Composites

2004 ◽  
Vol 2004 (0) ◽  
pp. 451-452
Author(s):  
Takayuki Bessho ◽  
Yasuo Ochi ◽  
Yutaka Matsumura ◽  
Toshio Ogasawara ◽  
Takuya Aoki
Keyword(s):  
High Temperature ◽  
Creep Deformation ◽  
High Temperature Creep ◽  
Matrix Composites ◽  
Temperature Creep

High Temperature Creep Behavior of Single Crystal Gammpraime and Gamm Laloys

1988 ◽  
Vol 133 ◽  
Author(s):  
M. V. Nathal ◽  
J. O. Diaz ◽  
R. V. Miner
Keyword(s):  
High Temperature ◽  
Single Crystal ◽  
Single Crystals ◽  
Creep Behavior ◽  
Dislocation Motion ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
High Temperature Creep ◽  
Two Phase ◽  
Temperature Creep

ABSTRACTThe creep behavior of single crystals of γ′ and γ alloys were investigated and compared to the response of two phase superalloys tested previously. High temperature deformation in the γ alloys was characteristic of a climb controlled mechanism, whereas the γ′ based materials exhibited glide controlled creep behavior. The superalloys were much more creep resistant than their constituent phases, which indicates the importance of the γ-γ′ interface as a barrier for dislocation motion during creep.

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