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Title: Deformation and strain hardening of different steels in impact dominated systems

Strain hardening is a common technique to exploit the full potential of materials in diverse applications. Single impact studies were performed to evaluate work hardening effects of different steels, correlated to their deformation at different energy and momentum levels. Three different steels were examined regarding their forming behavior and their tendency to strain harden in impact loading conditions, revealing different intensities of hardness increase, deformation and coinciding microstructural changes. Detailed studies in the deformed zone such as micro hardness mappings were performed to reveal the materials hardness increase in the deformed zones. Additionally high resolution scanning electron microscopy (HRSEM) supported by electron backscatter diffraction (EBSD) was used to determine microstructural changes. Results indicate, that the influence of different velocities/strain rates at constant energy levels cannot be neglected for the strain hardening behavior of steels and provide data for a better control of the hardness increase in impact dominated materials fabrication operations. - Highlights: • Deformation and strain hardening behaviour of three different steels. • Influence of impact energies and momenta on the strain hardening. • Hardness increase and depth controllable by momentum and energy.
Authors:
 [1] ;  [2] ;  [1]
  1. AC"2T research GmbH, Viktor-Kaplan-Straße 2, 2700 Wiener Neustadt (Austria)
  2. Aerospace and Advanced Composites GmbH, Viktor-Kaplan-Straße 2, 2700 Wiener Neustadt (Austria)
Publication Date:
OSTI Identifier:
22340351
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Characterization; Journal Volume: 90; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BACKSCATTERING; DEFORMATION; ELECTRON DIFFRACTION; ELECTRONS; ENERGY LEVELS; HARDNESS; MICROSTRUCTURE; SCANNING ELECTRON MICROSCOPY; STEELS; STRAIN HARDENING