Keyword: «mechanical testing»

APPLICATION OF DESTRUCTIVE TESTING METHODS TO ASSESS THE QUALITY OF MATERIALS AND WELDED JOINTS OF EQUIPMENT AND STRUCTURES OF THE NORTH AND THE ARCTIC

Authors:

Mihail Sidorov,

Sysanna Maharova,

Nikolai Golikov,

Sofya Yakovleva,

Sergei Semyonov

The article presents the activities of the accredited laboratory for destructive and other types of testing of materials of FRC ‘Yakutsk Scientific Center of the SB RAS'. The main methods of destructive testing used in research are listed. Examples of the works carried out with a brief description of the results obtained are given. The role of the testing laboratory in interaction with industrial enterprises and in the development of scientific research is shown.

Keywords: welded joints, structural materials, destructive testing, mechanical testing, chemical analysis, metallography

IMPACT STRENGTH OF WELDED JOINTS OF LOW-ALLOYED COLD-RESISTANT STEELS USED IN THE CONSTRUCTION OF METAL STRUCTURES IN THE NORTH AND THE ARCTIC

Authors:

Mihail Sidorov,

Igor Sannikov,

Sergei Semyonov,

Ryslan Tihonov,

Nikolai Litvincev

The problem of ensuring the reliability and strength of equipment and structures operating at low climatic temperatures is an urgent scientific and technical task today. Ensuring sufficient cold resistance and strength means preventing brittle fracture of structural elements at loads that are significantly lower than the calculated ones. One of these characteristics is impact strength. The paper presents the results of studies of the impact strength of a welded joint of steel 10ХСНД obtained by DC welding and pulsed arc welding.

Keywords: welded joints, impact strength, welding, mechanical testing, low alloy steel