Browsing Publikasjoner fra CRIStin by Author "Yamabe, Junichiro"
Now showing items 1-7 of 7
-
Hydrogen trapping in X70 structural pipeline steel and weldments
Sezgin, Jean-Gabriel; Fjær, Hallvard Gustav; Matsunaga, Hisao; Yamabe, Junichiro; Olden, Vigdis (Chapter; Peer reviewed, 2018)Diffusion measurements and thermal desorption measurements have been performed on a X70 pipeline steel, in as received and normalized and quenched condition, after being hydrogen charged for 200 h at 100 MPa hydrogen gas ... -
Hydrogen-assisted crack propagation in α-iron during elasto-plastic fracture toughness tests
Birenis, Domas; Ogawa, Yuhei; Matsunaga, Hisao; Takakuwa, Osamu; Yamabe, Junichiro; Prytz, Øystein; Thøgersen, Annett (Journal article; Peer reviewed, 2019)Elasto-plastic fracture toughness tests of a commercially pure iron were performed in air and in hydrogen gas at two different pressures. Some unique characteristics of hydrogen-enhanced cracking were exhibited at both the ... -
Hydrogen-assisted fatigue crack propagation in a pure BCC iron. Part I: Intergranular crack propagation at relatively low stress intensities
Ogawa, Yuhei; Birenis, Domas; Matsunaga, Hisao; Takakuwa, Osamu; Yamabe, Junichiro; Prytz, Øystein; Thøgersen, Annett (Peer reviewed; Journal article, 2018) -
Hydrogen-assisted fatigue crack propagation in a pure BCC iron. Part II: Accelerated regime manifested by quasi-cleavage fracture at relatively high stress intensity range values
Birenis, Domas; Ogawa, Yuhei; Matsunaga, Hisao; Takakuwa, Osamu; Yamabe, Junichiro; Prytz, Øystein; Thøgersen, Annett (Peer reviewed; Journal article, 2018)Hydrogen effect on fatigue performance at relatively high values of stress intensity factor range, ΔK, of pure BCC iron has been studied with a combination of various electron microscopy techniques. Hydrogen-assisted fatigue ... -
Interpretation of hydrogen-assisted fatigue crack propagation in BCC iron based on dislocation structure evolution around the crack wake
Birenis, Domas; Ogawa, Yuhei; Matsunaga, Hisao; Takakuwa, Osamu; Yamabe, Junichiro; Prytz, Øystein; Thøgersen, Annett (Peer reviewed; Journal article, 2018)A new model for hydrogen-assisted fatigue crack growth (HAFCG) in BCC iron under a gaseous hydrogen environment has been established based on various methods of observation, i.e., electron backscatter diffraction (EBSD), ... -
Multi-scale observation of hydrogen-induced, localized plastic deformation in fatigue-crack propagation in a pure iron
Ogawa, Yuhei; Birenis, Domas; Matsunaga, Hisao; Thøgersen, Annett; Prytz, Øystein; Takakuwa, Osamu; Yamabe, Junichiro (Peer reviewed; Journal article, 2017)In order to study the influence of hydrogen on plastic deformation behavior in the vicinity of the fatigue crack-tip in a pure iron, a multi-scale observation technique was employed, comprising electron channeling contrast ... -
Multi-scale observation of hydrogen-induced, localized plastic deformation in fatigue-crack propagation in a pure iron
Ogawa, Yuhei; Birenis, Domas; Matsunaga, Hisao; Thøgersen, Annett; Prytz, Øystein; Takakuwa, Osamu; Yamabe, Junichiro (Peer reviewed; Journal article, 2017)In order to study the influence of hydrogen on plastic deformation behavior in the vicinity of the fatigue crack-tip in a pure iron, a multi-scale observation technique was employed, comprising electron channeling contrast ...