Materials Map

Discover the materials research landscape. Find experts, partners, networks.

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The Materials Map is an open tool for improving networking and interdisciplinary exchange within materials research. It enables cross-database search for cooperation and network partners and discovering of the research landscape.

The dashboard provides detailed information about the selected scientist, e.g. publications. The dashboard can be filtered and shows the relationship to co-authors in different diagrams. In addition, a link is provided to find contact information.

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Materials Map under construction

The Materials Map is still under development. In its current state, it is only based on one single data source and, thus, incomplete and contains duplicates. We are working on incorporating new open data sources like ORCID to improve the quality and the timeliness of our data. We will update Materials Map as soon as possible and kindly ask for your patience.

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in Cooperation with on an Cooperation-Score of 37%

Topics

Publications (3/3 displayed)

  • 2022Effect of Hydrogen and Defects on Deformation and Failure of Austenitic Stainless Steelcitations
  • 2020Hydrogen effect on plastic deformation and fracture in austenitic stainless steelcitations
  • 2020Crystal Plasticity based Study to Understand the Interaction of Hydrogen, Defects and Loading in Austenitic Stainless Steel Single Crystals7citations

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Chart of shared publication
Kartal, Mehmet E.
3 / 14 shared
Siddiq, M. Amir
3 / 49 shared
Asim, Umair Bin
3 / 6 shared
Chart of publication period
2022
2020

Co-Authors (by relevance)

  • Kartal, Mehmet E.
  • Siddiq, M. Amir
  • Asim, Umair Bin
OrganizationsLocationPeople

article

Hydrogen effect on plastic deformation and fracture in austenitic stainless steel

  • Kartal, Mehmet E.
  • Siddiq, M. Amir
  • Asim, Umair Bin
  • Ogosi, Eugene
Abstract

<p>The effect of hydrogen on the fracture behaviour of austenitic stainless steel has been investigated in the past [1][2]. It has been reported that fracture initiates by void formation at inclusions and regions of enhanced strain localisation [3]. There is experimental evidence that supports the fact that hydrogen influences void nucleation, growth and coalescence during material fracture [4]. This work investigates the effect of hydrogen on void growth and coalescence in austenitic stainless steel. The effect of hydrogen on void growth and coalescence for different stress triaxialities has been examined by analysing the stress strain response of a single crystal representative volume element (RVE). The results show that the higher the stress triaxiality, the lower the equivalent stress required to yield. This response is found to be similar irrespective of whether the material is being exposed to hydrogen or not. Lower equivalent strain values to yield were experienced for higher stress triaxialities for both hydrogen free and hydrogenated samples. Hydrogen slowed down void growth at high stress triaxialities but promoted void growth as lower triaxialities. For lower triaxialities, the presence of hydrogen was found to initially inhibit void growth at low equivalent strain values. However, this effect reversed at higher equivalent strain values and hydrogen was found to promote void growth. The effect of hydrogen promoting or inhibiting void growth have been shown to increase in magnitude with increasing hydrogen concentration.</p>

Topics
  • impedance spectroscopy
  • polymer
  • single crystal
  • stainless steel
  • inclusion
  • Hydrogen
  • void