The Use of Precracked and Notched Slow Strain Rate Specimens

2009 ◽  
pp. 105-105-18 ◽  
Author(s):  
J Toribio
Keyword(s):  
Strain Rate ◽  
Slow Strain Rate

scholarly journals Slow Strain Rate Testing of Ti-6Al-4V Alloy in Hydrogen Gas at High Pressures and High Temperatures

2017 ◽  
Vol 58 (6) ◽  
pp. 886-891 ◽  
Author(s):  
Kenichi Koide ◽  
Toshirou Anraku ◽  
Akihiro Iwase ◽  
Hiroyuki Inoue
Keyword(s):  
Strain Rate ◽  
High Temperatures ◽  
High Pressures ◽  
Hydrogen Gas ◽  
Slow Strain Rate ◽  
Slow Strain Rate Testing ◽  
Rate Testing

scholarly journals Stress Corrosion Cracking of Additively Manufactured Alloy 625

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6115
Author(s):  
Marina Cabrini ◽  
Sergio Lorenzi ◽  
Cristian Testa ◽  
Francesco Carugo ◽  
Tommaso Pastore ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Hydrogen Embrittlement ◽  
Strain Rate ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
High Strain ◽  
Corrosion Cracking ◽  
Slow Strain Rate ◽  
Laser Source ◽  
Alloy 625

Laser bed powder fusion (LPBF) is an additive manufacturing technology for the fabrication of semi-finished components directly from computer-aided design modelling, through melting and consolidation, layer upon layer, of a metallic powder, with a laser source. This manufacturing technique is particularly indicated for poor machinable alloys, such as Alloy 625. However, the unique microstructure generated could modify the resistance of the alloy to environment assisted cracking. The aim of this work was to analyze the stress corrosion cracking (SCC) and hydrogen embrittlement resistance behavior of Alloy 625 obtained by LPBF, both in as-built condition and after a standard heat treatment (grade 1). U-bend testing performed in boiling magnesium chloride at 155 and 170 °C confirmed the immunity of the alloy to SCC. However, slow strain rate tests in simulated ocean water on cathodically polarized specimens highlighted the possibility of the occurrence of hydrogen embrittlement in a specific range of strain rate and cathodic polarization. The very fine grain size and dislocation density of the thermally untreated specimens appeared to increase the hydrogen diffusion and embrittlement effect on pre-charged specimens that were deformed at the high strain rate. Conversely, heat treatment appeared to mitigate hydrogen embrittlement at high strain rates, however at the slow strain rate all the specimens showed a similar behavior.

Slow Strain Rate Testing for Materials Evaluation in High-Pressure H2S Environments

CORROSION ◽  
1988 ◽  
Vol 44 (12) ◽  
pp. 920-926 ◽  
Author(s):  
D. R. McIntyre ◽  
R. D. Kane ◽  
S. M. Wilhelm
Keyword(s):  
High Pressure ◽  
Strain Rate ◽  
Slow Strain Rate ◽  
Slow Strain Rate Testing ◽  
Rate Testing
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