Effect of sulfur on structure and properties of Fe-Ni-Cr-based dispersion hardening alloys

1983 ◽  
Vol 25 (12) ◽  
pp. 912-915
Author(s):  
V. A. Strizhak ◽  
S. I. Stepanov ◽  
V. V. Kiselev ◽  
I. A. Gorlach ◽  
O. A. Khomenko ◽  
...  
Author(s):  
F. G. Lovshenko ◽  
G. F. Lovshenko ◽  
A. I. Khabibulin

Actual problem of modern welding production is the creation of electrodes for maximum performance and efficiency of the process whithin the required reliability and durability of the structure. A promising way to improve mechanical properties of the weld metal is the implementation of the mechanism of dispersion hardening. Reactionary mechanical alloying is an effective technology of obtaining nanocrystalline modifying ligatures and modifiers. The use of electrodes with an experimental coating containing a mechanically alloyed, composite ligature to resolve transcrystalline type of structure of the weld metal and reduce the grain size by 2.5–3.0 times (from # 8–9 to #11–12) reduces by 20–30% the threshold of cold brittleness and increase by 15– 25% of the mechanical properties of the weld metal.


1982 ◽  
Vol 18 (3) ◽  
pp. 355-358
Author(s):  
O. A. Bannykh ◽  
V. M. Blinov ◽  
I. N. Gavril'ev ◽  
A. A. Deribas ◽  
T. M. Sobolenko ◽  
...  

2016 ◽  
Vol 2016 (11) ◽  
pp. 9-16
Author(s):  
G.M. Grigorenko ◽  
◽  
S.V. Akhonin ◽  
O.M. Zadorozhnyuk ◽  
I.N. Klochkov ◽  
...  

2016 ◽  
Vol 2016 (11) ◽  
pp. 11-19
Author(s):  
G.M. Grigorenko ◽  
◽  
S.V. Akhonin ◽  
O.M. Zadorozhnyuk ◽  
I.N. Klochkov ◽  
...  

Author(s):  
Ernest L. Hall ◽  
Shyh-Chin Huang

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.


Author(s):  
E. Baer

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.


Author(s):  
C.K. Wu ◽  
P. Chang ◽  
N. Godinho

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.


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

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