Effect of the characteristics of carbon-bearing charge components on the structure and properties of hot-worked powder steels 1. Unconventional carbon-bearing components and their effect on charge preparation, pressing, and sintering

1995 ◽  
Vol 33 (9-10) ◽  
pp. 530-534 ◽  
Author(s):  
Yu. G. Dorofeev ◽  
V. Yu. Dorofeev ◽  
Zh. V. Eremeeva ◽  
T. V. Goncharova
Keyword(s):  
Structure And Properties ◽  
Charge Preparation ◽  
Powder Steels

Effect of the manufacturing technology on the structure and properties of heat-treatable powder steels

1998 ◽  
Vol 39 (8) ◽  
pp. 343-346
Author(s):  
N. N. Maslennikov ◽  
S. N. Bobrova ◽  
L. M. Grevnov ◽  
V. Ya. Bekker
Keyword(s):  
Manufacturing Technology ◽  
Structure And Properties ◽  
Powder Steels

scholarly journals Structure and properties of hot-deformed powder steels microalloyed by aluminium

2020 ◽  
Vol 862 ◽  
pp. 022045
Author(s):  
V Y Dorofeyev ◽  
A N Sviridova ◽  
Y M Berezhnoy ◽  
E N Bessarabov ◽  
K S Kochkarova ◽  
...  
Keyword(s):  
Structure And Properties ◽  
Powder Steels

Structure of second phases in TiAl alloys containing Cr and B

1991 ◽  
Vol 49 ◽  
pp. 576-577
Author(s):  
Ernest L. Hall ◽  
Shyh-Chin Huang
Keyword(s):  
Grain Size ◽  
Second Phase ◽  
Structure And Properties ◽  
Tial Alloys ◽  
Second Phases ◽  
Interstitial Elements

Addition of interstitial elements to γ-TiAl alloys is currently being explored as a method for improving the properties of these alloys. Previous work in which a number of interstitial elements were studied showed that boron was particularly effective in refining the grain size in castings, and led to enhanced strength while maintaining reasonable ductility. Other investigators have shown that B in γ-TiAl alloys tends to promote the formation of TiB2 as a second phase. In this study, the microstructure of Bcontaining TiAl alloys was examined in detail in order to describe the mechanism by which B alters the structure and properties of these alloys.

Relationships between hierarchical structure and properties in macromolecular systems

1987 ◽  
Vol 45 ◽  
pp. 440-443
Author(s):  
E. Baer
Keyword(s):  
Uniaxial Tension ◽  
Hierarchical Structure ◽  
Inorganic Material ◽  
Hierarchical Structures ◽  
Bone Collagen ◽  
Structure And Properties ◽  
Connective Tissues ◽  
Scale Level ◽  
Fibrous Protein ◽  
Macromolecular Systems

The most advanced macromolecular materials are found in plants and animals, and certainly the connective tissues in mammals are amongst the most advanced macromolecular composites known to mankind. The efficient use of collagen, a fibrous protein, in the design of both soft and hard connective tissues is worthy of comment. Very crudely, in bone collagen serves as a highly efficient binder for the inorganic hydroxyappatite which stiffens the structure. The interactions between the organic fiber of collagen and the inorganic material seem to occur at the nano (scale) level of organization. Epitatic crystallization of the inorganic phase on the fibers has been reported to give a highly anisotropic, stress responsive, structure. Soft connective tissues also have sophisticated oriented hierarchical structures. The collagen fibers are “glued” together by a highly hydrated gel-like proteoglycan matrix. One of the simplest structures of this type is tendon which functions primarily in uniaxial tension as a reinforced elastomeric cable between muscle and bone.

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