A mechanical equation of the condition of metal materials and prediction of high-temperature strength characteristics

1976 ◽  
Vol 8 (9) ◽  
pp. 1013-1018 ◽  
Author(s):  
I. I. Trunin
Keyword(s):  
High Temperature ◽  
Strength Characteristics ◽  
High Temperature Strength ◽  
Mechanical Equation ◽  
Metal Materials

Refining the high-temperature strength characteristics of composite materials under bending

1999 ◽  
Vol 31 (1) ◽  
pp. 105-106
Author(s):  
A. V. Bogomolov ◽  
V. A. Borisenko ◽  
V. K. Fedchuk
Keyword(s):  
High Temperature ◽  
Composite Materials ◽  
Strength Characteristics ◽  
High Temperature Strength

Influence of production factors on the high-temperature strength characteristics of molybdenum alloys

1988 ◽  
Vol 20 (6) ◽  
pp. 818-824 ◽  
Author(s):  
V. V. Bukhanovskii ◽  
V. K. Kharchenko ◽  
E. P. Polishchuk ◽  
V. S. Kravchenko ◽  
T. D. Galinzovskaya ◽  
...  
Keyword(s):  
High Temperature ◽  
Strength Characteristics ◽  
High Temperature Strength ◽  
Production Factors ◽  
Molybdenum Alloys

Microstructure and High Temperature Strength Characteristics of Unidirectionally Solidified Al2 O3 /GdAlO3 Eutectic Composite

2006 ◽  
Vol 317-318 ◽  
pp. 437-440 ◽  
Author(s):  
Hideki Ohtsubo ◽  
Narihito Nakagawa ◽  
Kazutoshi Shimizu ◽  
Koji Shibata ◽  
Atsuyuki Mitani ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
High Temperature ◽  
Temperature Gradient ◽  
Flexural Strength ◽  
Mechanical Strength ◽  
Unidirectional Solidification ◽  
Strength Characteristics ◽  
High Temperature Strength ◽  
Flexural Test ◽  
Eutectic Composite

Enploying unidirectional solidification, Al2O3/GdAlO3(Gadolinium Aluminum Perovskite:GAP) eutectic composite was fabricated. The Al2O3/GAP eutectic composite obtained has a flexural strength of over 600Mpa above 1500C. The composite also showed plastic deformation above 1550C on the flexural test. The effect of microstructure on mechanical strength at high temperature was investigated. Al2O3/GAP eutectic composites having different microstructure were fabricated by controlling the temperature gradient on unidirectional solidification. It was found that the flexural strength at high temperature of the composite became higher with refining the microstructure.

Influence of Thermo-Mechanical Processing on the Microstructure of Beryllia Dispersed Nickel Alloys

1973 ◽  
Vol 31 ◽  
pp. 184-185
Author(s):  
M.S. Grewal ◽  
S.A. Sastri ◽  
N.J. Grant
Keyword(s):  
High Temperature ◽  
Nickel Alloys ◽  
Thermomechanical Processing ◽  
Cold Work ◽  
High Temperature Strength ◽  
Strengthening Effect ◽  
Mechanical Processing ◽  
Uniform Dispersion ◽  
Oxide Particles ◽  
Nickel Base

Currently there is a great interest in developing nickel base alloys with fine and uniform dispersion of stable oxide particles, for high temperature applications. It is well known that the high temperature strength and stability of an oxide dispersed alloy can be greatly improved by appropriate thermomechanical processing, but the mechanism of this strengthening effect is not well understood. This investigation was undertaken to study the dislocation substructures formed in beryllia dispersed nickel alloys as a function of cold work both with and without intermediate anneals. Two alloys, one Ni-lv/oBeo and other Ni-4.5Mo-30Co-2v/oBeo were investigated. The influence of the substructures produced by Thermo-Mechanical Processing (TMP) on the high temperature creep properties of these alloys was also evaluated.

Application of TEM to Deformation, Wear, and Fracture of Ceramics

1974 ◽  
Vol 32 ◽  
pp. 472-473
Author(s):  
B. J. Hockey
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Mechanical Behavior ◽  
Brittle Materials ◽  
High Temperature Strength ◽  
Wide Range ◽  
Corrosive Environments ◽  
Further Development

Ceramics, such as Al2O3 and SiC have numerous current and potential uses in applications where high temperature strength, hardness, and wear resistance are required often in corrosive environments. These materials are, however, highly anisotropic and brittle, so that their mechanical behavior is often unpredictable. The further development of these materials will require a better understanding of the basic mechanisms controlling deformation, wear, and fracture.The purpose of this talk is to describe applications of TEM to the study of the deformation, wear, and fracture of Al2O3. Similar studies are currently being conducted on SiC and the techniques involved should be applicable to a wide range of hard, brittle materials.

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