Startseite Microstructure and residual stresses of laser remelted surfaces of a hot work tool steel
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Microstructure and residual stresses of laser remelted surfaces of a hot work tool steel

  • Johannes Preußner , Sabine Oeser , Wulf Pfeiffer , André Temmler und Edgar Willenborg
Veröffentlicht/Copyright: 12. April 2014
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 105 Heft 4

Abstract

This paper deals with a systematic metallurgical analysis of laser remelted surfaces on the hot work tool steel 1.2343 (AISI: H11). There are novel techniques using laser remelting for polishing surfaces using a constant laser beam power or for structuring surfaces using a modulated laser power. Basic properties, e. g. residual stresses, retained austenite, micro-stresses, microstructure, chemical composition and micro-hardness of the remelted near-surface layers are analyzed for different sets of procedural parameters such as laser power, laser beam diameter and number of repetitions. A carbon depleted area was found close to the remelted zone. The surface residual stresses tend from tensile to compressive and the content of retained austenite is lower when increasing both laser beam diameter and laser power. The formation of surface residual stresses is explained by a combination of shrinkage stresses and transformation stresses. The residual stresses tend from tensile to compressive with increasing number of repetitions, which can be explained by a preheating effect. A linear correlation between the measured surface hardness and the peak half width acquired by X-ray diffraction was found.

Keywords: Laser remelting; X-ray diffraction; Steel; Residual stresses; Microstructure
* Correspondence address, Dr.-Ing. Johannes Preußner, Fraunhofer IWM, Wöhlerstraße 11, 79108 Freiburg, Germany, Tel.: +49 761 5142-101, Fax: +49 761 5142-510, E-mail:

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Received: 2013-08-15
Accepted: 2013-10-26
Published Online: 2014-04-12
Published in Print: 2014-04-14

© 2014, Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Original Contributions
  4. Microstructure and residual stresses of laser remelted surfaces of a hot work tool steel
  5. Dynamic observation of twin evolution during austenite grain growth in an Fe–C–Mn–Si alloy
  6. Hot ductility behavior of Incoloy901 superalloy in the cast and wrought conditions
  7. The influence of aluminium intermediate layer in dissimilar friction welds
  8. Effect of TiO2 in aluminum matrix on workability behavior of powder metallurgy composites during cold upsetting
  9. Approach to evaluation of the overall strengthening and toughening effect of continuous fiber-reinforced ceramic matrix composites
  10. The effect of SiC/Al2O3 particles used during FSP on mechanical properties of AZ91 magnesium alloy
  11. Studies on salt fog corrosion behavior of friction stir welded AA7075–T651 aluminum alloy
  12. Evaluation of corrosion performance of two Mn-containing stainless steel alloys
  13. Carbothermal synthesis of β-SiC powders from silicon and SiO2-coated carbon powders
  14. Synthesis and application of TiO2 nanotubes in environmental pollutant removal
  15. Mechanical properties of polyvinyl alcohol sponge under different strain rates
  16. Short Communications
  17. Effects of Al2O3 phase composition on AlON powder synthesis via aluminothermic reduction and nitridation
  18. Atomic group rotation mechanism of {1013} twinning in HCP materials
  19. Self-propagation high-temperature sintering of the Ti–Al–C-diamond/BN system
  20. People
  21. The German Materials Society congratulates its long-time Managing Director Dr. Peter Paul Schepp on the occasion of his 65th birthday
  22. Dr. Margarethe Hofmann-Amtenbrink on her 65th birthday
  23. DGM News
  24. DGM News
https://doi.org/10.3139/146.111027
Schlagwörter für diesen Artikel
Laser remelting; X-ray diffraction; Steel; Residual stresses; Microstructure

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Original Contributions
  4. Microstructure and residual stresses of laser remelted surfaces of a hot work tool steel
  5. Dynamic observation of twin evolution during austenite grain growth in an Fe–C–Mn–Si alloy
  6. Hot ductility behavior of Incoloy901 superalloy in the cast and wrought conditions
  7. The influence of aluminium intermediate layer in dissimilar friction welds
  8. Effect of TiO2 in aluminum matrix on workability behavior of powder metallurgy composites during cold upsetting
  9. Approach to evaluation of the overall strengthening and toughening effect of continuous fiber-reinforced ceramic matrix composites
  10. The effect of SiC/Al2O3 particles used during FSP on mechanical properties of AZ91 magnesium alloy
  11. Studies on salt fog corrosion behavior of friction stir welded AA7075–T651 aluminum alloy
  12. Evaluation of corrosion performance of two Mn-containing stainless steel alloys
  13. Carbothermal synthesis of β-SiC powders from silicon and SiO2-coated carbon powders
  14. Synthesis and application of TiO2 nanotubes in environmental pollutant removal
  15. Mechanical properties of polyvinyl alcohol sponge under different strain rates
  16. Short Communications
  17. Effects of Al2O3 phase composition on AlON powder synthesis via aluminothermic reduction and nitridation
  18. Atomic group rotation mechanism of {1013} twinning in HCP materials
  19. Self-propagation high-temperature sintering of the Ti–Al–C-diamond/BN system
  20. People
  21. The German Materials Society congratulates its long-time Managing Director Dr. Peter Paul Schepp on the occasion of his 65th birthday
  22. Dr. Margarethe Hofmann-Amtenbrink on her 65th birthday
  23. DGM News
  24. DGM News
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