Abstract
The phenomenon of hydrogen-trapping and its quantitative contribution to hydrogen-induced intergranular (IG) fracture were studied using a combination of thermal desorption analysis, secondary ion mass spectrometry and slow strain rate tensile tests. Hydrogen was trapped along grain boundaries (GBs) with a binding energy of ≈20 kJ/mol, accompanied by IG sulfur. The true fracture stress and fracture surface morphology were strongly dependent on the concentration of trapped hydrogen, leading to the conclusion that the hydrogen-induced IG fracture of pure Ni is controlled by the concentration of hydrogen trapped along GBs, and not by the concentration of lattice hydrogen.
| Original language | English |
|---|---|
| Article number | 100478 |
| Journal | Materialia |
| Volume | 8 |
| DOIs | |
| Publication status | Published - Dec 2019 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
Cite this
Visualization of trapped hydrogen along grain boundaries and its quantitative contribution to hydrogen-induced intergranular fracture in pure nickel. / Wada, Kentaro; Yamabe, Junichiro; Matsunaga, Hisao.
In: Materialia, Vol. 8, 100478, 12.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Visualization of trapped hydrogen along grain boundaries and its quantitative contribution to hydrogen-induced intergranular fracture in pure nickel
AU - Wada, Kentaro
AU - Yamabe, Junichiro
AU - Matsunaga, Hisao
PY - 2019/12
Y1 - 2019/12
N2 - The phenomenon of hydrogen-trapping and its quantitative contribution to hydrogen-induced intergranular (IG) fracture were studied using a combination of thermal desorption analysis, secondary ion mass spectrometry and slow strain rate tensile tests. Hydrogen was trapped along grain boundaries (GBs) with a binding energy of ≈20 kJ/mol, accompanied by IG sulfur. The true fracture stress and fracture surface morphology were strongly dependent on the concentration of trapped hydrogen, leading to the conclusion that the hydrogen-induced IG fracture of pure Ni is controlled by the concentration of hydrogen trapped along GBs, and not by the concentration of lattice hydrogen.
AB - The phenomenon of hydrogen-trapping and its quantitative contribution to hydrogen-induced intergranular (IG) fracture were studied using a combination of thermal desorption analysis, secondary ion mass spectrometry and slow strain rate tensile tests. Hydrogen was trapped along grain boundaries (GBs) with a binding energy of ≈20 kJ/mol, accompanied by IG sulfur. The true fracture stress and fracture surface morphology were strongly dependent on the concentration of trapped hydrogen, leading to the conclusion that the hydrogen-induced IG fracture of pure Ni is controlled by the concentration of hydrogen trapped along GBs, and not by the concentration of lattice hydrogen.
UR - http://www.scopus.com/inward/record.url?scp=85072847088&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85072847088&partnerID=8YFLogxK
U2 - 10.1016/j.mtla.2019.100478
DO - 10.1016/j.mtla.2019.100478
M3 - Article
AN - SCOPUS:85072847088
VL - 8
JO - Materialia
JF - Materialia
SN - 2589-1529
M1 - 100478
ER -