Effect of low temperature and medium on the kinetics of fatigue failure of 3M titanium alloy

Autor:	G. I. Arkavenko, E. I. Aleksenko, S. I. Aksenova, N. M. Grinberg, N. A. Grekov
Rok vydání:	1990
Předmět:	Materials science Atmospheric pressure Mechanical Engineering Alloy Metallurgy Titanium alloy Paris' law engineering.material Condensed Matter Physics Crack growth resistance curve Microstructure Crack closure Mechanics of Materials engineering General Materials Science Stress concentration
Zdroj:	Soviet Materials Science. 26:138-144
ISSN:	1573-885X 0038-5565
DOI:	10.1007/bf00727232
Popis:	1. A reduction of the air pressure reduces the rate of fatigue crack growth and increases the threshold range of the SIF in 3M titanium alloy. 2. A reduction of temperature in vacuum is accompanied by a nonmonotonic variation of the cracking resistance characteristics of the 3M alloy. At 93 K the rate of fatigue crack growth decreases and the threshold range increases. However, a further reduction of temperature to 11 K results in the reversed effect, with the rate of fatigue crack propagation becomming comparable with that in air. 3. A variation in the duration of the crack initiation stage with a reduction of the air pressure and temperature correlates with the variation of the threshold SIF. 4. On the basis of changes in the microstructure of the fracture surfaces, it can be concluded that the energy capacity of fatigue failure increases with a reduction of the air pressure and decreases with a reduction of temperature to 11 K.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6ca69aac2c7d88439ffa66d0f9d7bfd6 https://doi.org/10.1007/bf00727232 Zobrazit plný text záznamu Full text from SpringerLink