材料期刊网

Dissipation of Solitary Waves in Aluminum with Grain Boundary

S.G.Psakhie , K.P.Zolnikov and D.Yu. Saraev (Institute of Strength Physics and Materials Science , Russian Academy of Sciences , Siberian Branch , Akademicheskii pr.2/1 , 634021 Tomsk Russia)

材料科学技术（英文）

The behaviour of passing solitary waves through the region of grain boundary has been investigated on the basis of the molecular dynamics method. It has been shown that solitary waves initiated by compression and shear loading have a different interaction with the grain boundary region. The possibilities of using solitary waves for nondestructive testing of materials, in particular, for testing the quality of coatings, for testing of accumulation of microdamages, etc. have been noted.

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Russia's Precious Metals Market: Condition and Prospects

KOTLYAR A. Yu.

贵金属

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The Work of NAHE on Promotion of Achievements in Hydrogen Energy in Russia and of Advantages of Using Platinoids in the Energy Sector

SHELISCH P. B. , RAMENSKY A. Yu. , BEKLEMISCHEVA O. A. , RAMENSKAYA E. A.

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DEVELOPMENT OF EFFECTIVE TECHNOLOGICAL PROCESSES OF HIGH-STRENGTH STEEL WELDING

L.I.Mikhoduj (The E. O. Paton Electric Welding Institute , NAS of Ukraine , Kiev , Ukraine)

金属学报(英文版)

Composition and service properties of high - strength low-alloyed steels with 590-980 MPa yield strength,which find an application in Russia, Belorus,Ukraine and other countries of the former USSR in manufacture of welded structures of a powerful mining and transport machinery, are given. Electrodes and wires for main processes of arc welding of these steels have been devel- oped on the basis of a rational use of different systems of alloying (08KhN2GM,08KhNG2M, and also economical systems of type 10G25, ect. ). Main approaches to the technological provess- es of manufacture of structures of high - strength steels are formulated.They are mainly directed to the weakening of de offect of the factors which contribute to a delayed fracture of joints (diffusive hydrogen,unfavourable rates of cooling,level of residual stresses). When there are no stress concentrators (and at a low level of residual stresses) the welded joints of these steels have a good resistance to fatigue and brittle fractures.As a rule, they are prevented with the help of the known approaches.It is shown that in addition to them and due to a proper selection of conditions of welding the life of welded joints of the high - strength steels can be 1. 2 - 1. 4 times in- creased.

关键词: high-strength steel , null , null , null