Aluminum-Magnesium Alloy Strain Behavior under Thermomechanical Loading

  • С.В. Макаров Altai State University (Barnaul, Russia) Email: Makarov@phys.asu.ru
  • В.А. Плотников Altai State University (Barnaul, Russia); Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Sciences (Tomsk, Russia) Email: plotnikov@phys.asu.ru
  • Е.А. Колубаев Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Sciences (Tomsk, Russia); National Research Tomsk Polytechnic University (Tomsk, Russia) Email: eak@ispms.tsc.ru
DOI_disc_logo https://doi.org/10.14258/izvasu(2015)1.2-05
Keywords: monotonic deformation, jump deformation, isothermal loading

Abstract

Strain accumulation data for the AlMg6 alloy under isothermal loading are presented. The recorded realtime parameters of the experiment are the load and the strain. A sample has been loaded by a shear stress, and the shearing strain has been measured. Loading is performed isothermally within the temperature range from 25 °С to 500 °С. It is shown that macroscopic strain jumps provide the main contribution to strain accumulation at low temperatures. Along the monotone strain accumulation, the macroscopic strain jumps with their significant contribution to the overall deformation of the sample are observed. When the temperatures are 300 °С and higher, the strain accumulation behavior undergoes the following changes: the strain increments exponentially without clearly visible strain jumps. However, the strain increment allows this stage of strain accumulation to be treated as a quasi step-like stage. It is explained by the fact that due to increasing of the temperature of isothermal time monotone accumulation areas become smaller until they merge completely into single fast quasi step-like stage of accumulation.

DOI 10.14258/izvasu(2015)1.2-05

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Author Biographies

С.В. Макаров, Altai State University (Barnaul, Russia)
кандидат физико-математических наук, доцент кафедры общей и экспериментальной физики
В.А. Плотников, Altai State University (Barnaul, Russia); Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Sciences (Tomsk, Russia)
доктор физико-математических наук, профессор, заведующий кафедрой общей и экспериментальной физики; ведущий научный сотрудник
Е.А. Колубаев, Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Sciences (Tomsk, Russia); National Research Tomsk Polytechnic University (Tomsk, Russia)
кандидат физико-математических наук, заведующий лабораторией; научный сотрудник

References

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Макаров С.В., Плотников В.А., Колубаев Е.А. Закономерности акустической эмиссии в условиях пластической деформации алюминиево-магниевого сплава при неизотермическом нагружении // Известия Алт. гос. ун-та. - 2014. - № 1/1. DOI:10.14258/izvasu(2014)1.1-56

Макаров С.В., Плотников В.А., Колубаев Е.А. Скачкообразная деформация и импульсная акустическая эмиссия при нагружении алюминиево-магниевых сплавов // Известия Алт. гос. ун-та. - 2014. - № 1/2. DOI:10.14258/izvasu(2014)1.2-36

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Криштал М.М., Мерсон Д. Л. Влияние геометрических параметров образца на механические свойства и акустическую эмиссию при прерывистой текучести в Al-Mg сплавах // ФММ. - 1991. - № 10.

How to Cite
Макаров С., Плотников В., Колубаев Е. Aluminum-Magnesium Alloy Strain Behavior under Thermomechanical Loading // Izvestiya of Altai State University, 1, № 1/2(85) DOI: 10.14258/izvasu(2015)1.2-05. URL: http://izvestiya.asu.ru/article/view/%282015%291.2-05.
Issue
No 1/2(85) (2015): Известия Алтайского государственного университета
Section
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