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Inorganic Materials: Applied Research

, Volume 10, Issue 6, pp 1448–1455 | Cite as

Mechanical Properties of the Welded Joints of the Pressed Aluminum–Magnesium 1565ch Alloy at Low and High Temperatures

  • S. A. ZykovEmail author
  • V. I. Pavlova
  • E. P. Osokin
WELDING AND ALLIED PROCESSES. WELDING CONSUMABLES AND TECHNOLOGIES
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Abstract

The paper shows the research results of the structure and mechanical properties of welded joints of the hot-pressed panels and profiles manufactured by JSC Arkonik SMP from aluminum–magnesium 1565ch alloy at the temperature range from –165 to 150°C. It is established that the nature of changes in the properties of welded joints of pressed panels and profiles of 1565ch alloy made by manual argon arc welding with non-consumable electrodes of TIG with filler material СвАМг61 at various test temperatures is similar to changes in the welded joints of rolled sheets. When the test temperature is lowered, low-temperature hardening of the welded joints is observed—at cryogenic temperature (–165°C), 20–30% of strength is gained compared to 20°C. The prolonged aging of welded joints at an elevated temperature (150°C) leads to a decrease in strength by 25–30% compared to 20°C. The strength coefficient of welded joints with reinforced joint is not less than 0.9 of the actual strength of the base metal at all test temperatures.

Keywords:

pressed alloy of 1565ch grade argon arc welding welded joints mechanical properties at low and high temperatures 

Notes

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  1. 1.National Research Center Kurchatov Institute—CRISM Prometey St. PetersburgRussia

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