scholarly journals Design guide for composite-material flywheels: rotor dyamic considerations. Part I. System whirling and stability. Final report

1981 ◽  
Author(s):  
C.W. Bert ◽  
G. Ramunujam
1996 ◽  
Author(s):  
B Frame ◽  
F Paulauskas ◽  
J Miller ◽  
W Parzych

1996 ◽  
Author(s):  
B Frame ◽  
F Paulauskas ◽  
J Miller ◽  
W Parzych

10.2172/13781 ◽  
1999 ◽  
Author(s):  
GE Fryxell ◽  
KL Alford ◽  
KL Simmons ◽  
RD Voise ◽  
WD Samuels

Author(s):  
E. Sukedai ◽  
H. Mabuchi ◽  
H. Hashimoto ◽  
Y. Nakayama

In order to improve the mechanical properties of an intermetal1ic compound TiAl, a composite material of TiAl involving a second phase Ti2AIN was prepared by a new combustion reaction method. It is found that Ti2AIN (hexagonal structure) is a rod shape as shown in Fig.1 and its side surface is almost parallel to the basal plane, and this composite material has distinguished strength at elevated temperature and considerable toughness at room temperature comparing with TiAl single phase material. Since the property of the interface of composite materials has strong influences to their mechanical properties, the structure of the interface of intermetallic compound and nitride on the areas corresponding to 2, 3 and 4 as shown in Fig.1 was investigated using high resolution electron microscopy and image processing.


Author(s):  
O. Popoola ◽  
A.H. Heuer ◽  
P. Pirouz

The addition of fibres or particles (TiB2, SiC etc.) into TiAl intermetallic alloys could increase their toughness without compromising their good high temperature mechanical and chemical properties. This paper briefly discribes the microstructure developed by a TiAl/TiB2 composite material fabricated with the XD™ process and forged at 960°C.The specimens for transmission electron microscopy (TEM) were prepared in the usual way (i.e. diamond polishing and argon ion beam thinning) and examined on a JEOL 4000EX for microstucture and on a Philips 400T equipped with a SiLi detector for microanalyses.The matrix was predominantly γ (TiAl with L10 structure) and α2(TisAl with DO 19 structure) phases with various morphologies shown in figure 1.


2002 ◽  
Author(s):  
Teresa Nastoff ◽  
◽  
Diane M. Drew ◽  
Pamela S. Wigington ◽  
Julie Wakefield ◽  
...  

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