S. V. Smirnov , L. M. Zamaraev
ENERGY OF ACTIVATION OF THE VT5 AND VT1-0 TITANIUM ALLOYS UNDER SHORT-TERM CREEP IN AIR AND ARGON
DOI: 10.17804/2410-9908.2016.6.100-110 Test results for the short-term creep of commercially pure VT1-0 titanium and the VT5 alloy at temperatures ranging from 673 K to 1323 K and rated tensile stresses ranging between 4.45 and 9.36 MPa in air and argon are presented. The experimental results have shown a considerable decrease in the speed of creep under loading in the argon environment in comparison with that in air. The values of the activation energy determined in tests with a stepwise change of temperature by Dorn’s method have close values for the materials studied in air and argon, 250 to 300 kJ/mol, and this testifies to the identical mechanism of creep.
Keywords: titanium alloys, environmental effect on creep, creep activation energy Bibliography:
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С. В. Смирнов, Л. М. Замараев
ЭНЕРГИЯ АКТИВАЦИИ ТИТАНОВЫХ СПЛАВОВ ВТ1-0 И ВТ5 ПРИ КРАТКОВРЕМЕННОЙ ПОЛЗУЧЕСТИ В ВОЗДУХЕ И АРГОНЕ.
Представлены результаты испытаний кратковременной ползучести технически чистого титана ВТ1-0 и сплава ВТ5 диапазоне температур от 673 до 1323 К при номинальных растягивающих напряжениях от 4.45 до 9.36 МПа в воздухе и аргоне. Результаты экспериментов показали значительное снижение скорости ползучести при нагружении в среде аргона по сравнению с испытаниями на воздухе. Значения энергии активации, определенной в испытаниях со ступенчатым изменением температуры по методу Дорна, для исследованных материалов в воздухе и аргоне имеют близкие значения 250 – 300 kJ/mol, что свидетельствует об одинаковом механизме ползучести.
Ключевые слова: титановые сплавы, влияние окружающей среды на ползучесть, энергия активации ползучести Библиография:
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Библиографическая ссылка на статью
Smirnov S. V., Zamaraev L. M. Energy of Activation of the Vt5 and Vt1-0 Titanium Alloys under Short-Term Creep in Air and Argon // Diagnostics, Resource and Mechanics of materials and structures. -
2016. - Iss. 6. - P. 100-110. - DOI: 10.17804/2410-9908.2016.6.100-110. -
URL: http://dream-journal.org/issues/content/article_106.html (accessed: 06.10.2024).
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