Browsing NTNU Open by Author "Ortiz, Michael"

Now showing items 1-7 of 7

    • Hydrogen trapping and diffusion in polycrystalline nickel: the spectrum of grain boundary segregation 

      Ding, Yu; Yu, Haiyang; Lin, Meichao; Ortiz, Michael; Xiao, Senbo; He, Jianying; Zhang, Zhiliang (Peer reviewed; Journal article, 2024)
      Hydrogen as an interstitial solute at grain boundaries (GBs) can have a catastrophic impact on the mechanical properties of many metals. Despite the global research effort, the underlying hydrogen-GB interactions in ...

    • Hydrogen trapping and diffusion in polycrystalline nickel: the spectrum of grain boundary segregation 

      Ding, Yu; Yu, Haiyang; Lin, Meichao; Ortiz, Michael; Xiao, Senbo; He, Jianying; Zhang, Zhiliang (Peer reviewed; Journal article, 2023)
      Hydrogen as an interstitial solute at grain boundaries (GBs) can have a catastrophic impact on the mechanical properties of many metals. Despite the global research effort, the underlying hydrogen-GB interactions in ...

    • Hydrogen-enhanced grain boundary vacancy stockpiling causes transgranular to intergranular fracture transition 

      Ding, Yu; Yu, Haiyang; Lin, Meichao; Zhao, Kai; Xiao, Senbo; Vinogradov, Alexei; Qiao, Lijie; Ortiz, Michael; He, Jianying; Zhang, Zhiliang (Journal article; Peer reviewed, 2022)
      The attention to hydrogen embrittlement (HE) has been intensified recently in the light of hydrogen as a carbon-free energy carrier. Despite worldwide research, the multifaceted HE mechanism remains a matter of debate. ...

    • Hydrogen-induced transgranular to intergranular fracture transition in bi-crystalline Nickel 

      Ding, Yu; Yu, Haiyang; Zhao, Kai; Lin, Meichao; Xiao, Senbo; Ortiz, Michael; He, Jianying; Zhang, Zhiliang (Peer reviewed; Journal article, 2021)
      It is known that hydrogen can influence the dislocation plasticity and fracture mode transition of metallic materials, however, the nanoscale interaction mechanism between hydrogen and grain boundary largely remains illusive. ...

    • A self-consistent void-based rationale for hydrogen embrittlement 

      Yu, Haiyang; He, Jianying; Morin, David Didier; Ortiz, Michael; Zhang, Zhiliang (Peer reviewed; Journal article, 2025)
      Solely based on the failure process of metallic materials containing voids, we propose a straightforward rationale for a self-consistent void-based hydrogen embrittlement (CVHE) predictive framework that effectively captures ...

    • Supergiant elasticity and fracture of 3D spirally wound MoS2 

      Wu, Jianyang; He, Jianying; Ariza, Pilar; Ortiz, Michael; Zhang, Zhiliang (Peer reviewed; Journal article, 2020)
      Recently experimentally synthesized three-dimensional (3D) MoS2 spiral is a new kind of helical structure with technically robust properties. Among them, the mechanical properties of such appealing materials are indispensable ...

    • Topology and polarity of dislocation cores dictate the strength of monolayer MoS2 

      Wu, Jianyang; Zhang, Zhisen; He, Jianying; Ariza, Pilar; Ortiz, Michael; Zhang, Zhiliang (Journal article; Peer reviewed, 2019)
      In contrast to homoelemental graphene showing common dislocation dipole with pentagon-heptagon (5|7) core, heteroelemental MoS2 is observed to contain diverse dislocation cores that tune the chemical and physical properties. ...