Effect of rate of cooling after sintering on the structure and properties of ZhGr1.5D2.5 powder metallurgical material

1972 ◽  
Vol 11 (8) ◽  
pp. 651-654
Author(s):  
R. I. Fedorov ◽  
A. T. Tsyrkin ◽  
V. A. Samoilov ◽  
A. S. Nosenko
Keyword(s):  
Structure And Properties ◽  
Metallurgical Material ◽  
Powder Metallurgical Material ◽  
Rate Of Cooling

scholarly journals RESEARCH OF THE RATE OF COOLING AND SELECTION OF THE MATERIAL FORM FOR THE MECHANICAL CHARACTERISTICS OF CAST IRON CASTINGS

2021 ◽  
Vol 6 (2(35)) ◽  
pp. 16-21
Author(s):  
M.B. Akramov ◽  
A.Sh. Khaitov ◽  
A.R. Umurzokov ◽  
R.M. Umurzokov
Keyword(s):  
Cast Iron ◽  
Mechanical Characteristics ◽  
Regression Equations ◽  
Structure And Properties ◽  
Iron Castings ◽  
Molten Cast Iron ◽  
Rate Of Cooling ◽  
Molding Materials ◽  
Material Form ◽  
Selection Of

The structure and properties of cast iron castings depends not only on the chemical composition of molten cast iron and the technology of its smelting, but also on many other conditions such as cooling and crystallization of castings, especially on further solidification of castings in casting molds. The article presents the established dependences of the influence of the cooling rate of castings on the mechanical properties of the obtained parts, the investigated microstructures of experimental samples from the selected molding materials and it is established that the thermal conductivity of materials affects the structure of graphite in cast iron castings. Computer models of dependencies and regression equations of the processes are proposed.

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.

The Structure and Properties of MoSi2 Thin Film in Mos Process

1980 ◽  
Vol 38 ◽  
pp. 326-327
Author(s):  
C.K. Wu ◽  
P. Chang ◽  
N. Godinho
Keyword(s):  
Thin Film ◽  
Integrated Circuits ◽  
High Performance ◽  
Large Scale ◽  
Process Development ◽  
Structure And Properties ◽  
Metal Silicides ◽  
High Oxidation ◽  
Important Approach ◽  
High Oxidation Resistance

Recently, the use of refractory metal silicides as low resistivity, high temperature and high oxidation resistance gate materials in large scale integrated circuits (LSI) has become an important approach in advanced MOS process development (1). This research is a systematic study on the structure and properties of molybdenum silicide thin film and its applicability to high performance LSI fabrication.

Structure and properties of H5O2+

1991 ◽  
Vol 88 ◽  
pp. 411-420 ◽  
Author(s):  
D Peeters ◽  
G Leroy
Keyword(s):  
Structure And Properties

Peculiarities of the synthesis, structure and properties of ET radical cation salts prepared in the presence of the rare-earth metal complex anions

2004 ◽  
Vol 114 ◽  
pp. 527-528 ◽  
Author(s):  
N. D. Kushch ◽  
A. V. Kazakova ◽  
L. I. Buravov ◽  
A. N. Chekhlov ◽  
E. B. Yagubskii
Keyword(s):  
Rare Earth ◽  
Metal Complex ◽  
Radical Cation ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Structure And Properties ◽  
Rare Earth Metal Complex ◽  
Radical Cation Salts ◽  
Complex Anions ◽  
The Rare Earth

CRYSTAL STRUCTURE AND PROPERTIES OF NEW CADMIUMAND THALLIUM-CONTAINING PEROVSKITES

1972 ◽  
Vol 33 (C2) ◽  
pp. C2-241-C2-242
Author(s):  
Yu. N. VENEVTSEV ◽  
A. G. KAPYSHEV ◽  
V. M. LEBEDEV ◽  
V. D. SAL'NIKOV ◽  
G. S. ZHDANOV
Keyword(s):  
Crystal Structure ◽  
Structure And Properties
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