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

被引：1

作者：

Zykov S.A. ^{[1
]}

Pavlova V.I. ^{[1
]}

Osokin E.P. ^{[1
]}

机构：

[1] National Research Center Kurchatov Institute—CRISM Prometey, St. Petersburg

来源：

Inorganic Materials: Applied Research | 2019年 / 10卷 / 6期

关键词：

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

D O I：

10.1134/S2075113319060315

中图分类号：

学科分类号：

摘要：

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. © 2019, Pleiades Publishing, Ltd.

引用

页码：1448 / 1455

页数：7

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