Mechanical Properties of a Copper–steel Bimetal Produced by Explosion Welding in the Temperature Range between −70 and +70 °c

I. A. Veretennikova; D. I. Vichuzhanin; S. V. Smirnov

doi:10.17804/2410-9908.2025.6.050-067

I. A. Veretennikova, D. I. Vichuzhanin, S. V. Smirnov

MECHANICAL PROPERTIES OF A COPPER–STEEL BIMETAL PRODUCED BY EXPLOSION WELDING IN THE TEMPERATURE RANGE BETWEEN −70 AND +70 °C

DOI: 10.17804/2410-9908.2025.6.050-067

The paper studies the mechanical properties of an explosion-welded bimetal consisting of M1 copper and 09G2S steel layers in uniaxial tensile testing at temperatures ranging between −70 to +70 °C. Besides, similar characteristics of each individual metal in the same temperature range are compared with the characteristics of the bimetal. In the temperature range under study, the offset yield strength and ultimate tensile strength of the bimetal are lower than the similar characteristics of the 09G2S steel, but they significantly exceed the values for copper M1. The elongation of the bimetal is lower than that of the constituent metals, while the contraction ratio for all the specimens is approximately at the same level. It is found that, in the bimetal, explosion welding results in the appearance of a zone at the weld boundary that differs in the mechanical properties from the constituents and significantly affects the mechanical properties of the bimetal as a whole. The set of mechanical properties obtained in uniaxial tensile tests for the bimetal made of M1 copper and 09G2S steel shows the possibility of using this bimetal as a structural material at temperatures ranging between −70 and +70 °C.

Acknowledgement: The work was performed under the state assignment No. 124020700063-3 for the IES UB RAS. The equipment of the Plastometriya shared research facilities, IES UB RAS, was used for the research. We appreciate the assistance of Nikolai S. Michurov in the fractographic examination by means of a Tescan Vega II XMU scanning electron microscope.

Keywords: bimetal made of M1 copper and 09G2S steel, explosion welding, weld, uniaxial tension, temperature tests, mechanical properties, mixture rule

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И. А. Веретенникова, Д. И. Вичужанин, С. В. Смирнов

МЕХАНИЧЕСКИЕ СВОЙСТВА ПОЛУЧЕННОГО СВАРКОЙ ВЗРЫВОМ МЕДНО-СТАЛЬНОГО БИМЕТАЛЛА В ДИАПАЗОНЕ ТЕМПЕРАТУР ОТ −70 ДО +70 °C

В статье изучены механические свойства при испытаниях на одноосное растяжение в диапазоне температур от −70 до +70 ○C полученного сваркой взрывом биметалла, состоящего из слоев меди М1 и стали марки 09Г2С. Также проведено сравнение аналогичных характеристик каждого металла отдельно в том же диапазоне температур с характеристиками биметалла. В рассматриваемом температурном интервале условный предел текучести и временное сопротивление разрыву биметалла оказываются ниже аналогичных характеристик стали 09Г2С, но заметно превосходят соответствующие величины для меди М1. Показатель относительного удлинения у биметалла ниже, чем у составляющих металлов, тогда как относительное сужение для всех образцов находится примерно на одном уровне. Установлено, что в биметалле в результате сварки взрывом в области сварной границы получена зона, отличающаяся по механическим свойствам от составляющих биметалла и существенно влияющая на механические свойства биметалла в целом. Полученный комплекс механических свойств в испытаниях на одноосное растяжение для биметалла «медь М1 – сталь 09Г2С» показывает возможность применения его в качестве конструкционного материала в диапазоне температур от −70 до +70 °С.

Благодарность: Работа выполнена в соответствии с государственным заданием № 124020700063-3 для Института машиноведения имени Э. С. Горкунова УрО РАН. Исследования проведены с использованием оборудования ЦКП «Пластометрия» Института машиноведения имени Э. С. Горкунова УрО РАН. Авторы выражают благодарность Мичурову Николаю Сергеевичу за помощь при проведении фрактографических исследований с использованием сканирующего электронного микроскопа Tescan Vega II XMU.

Ключевые слова: биметалл «медь М1 – сталь 09Г2С», сварка взрывом, сварной шов, одноосное растяжение, температурные испытания, механические свойства, правило смеси

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Библиографическая ссылка на статью

Veretennikova I. A., Vichuzhanin D. I., Smirnov S. V. Mechanical Properties of a Copper–steel Bimetal Produced by Explosion Welding in the Temperature Range between −70 and +70 °c // Diagnostics, Resource and Mechanics of materials and structures. - 2025. - Iss. 6. - P. 50-67. -
DOI: 10.17804/2410-9908.2025.6.050-067. -
URL: http://dream-journal.org/issues/content/article_521.html
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