Intercrystalline cracking of austenitic steel during brazing

Kornél Májlinger, P. Szabó

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

During brazing of austenitic stainless steel with copper based brazing material a common failure occurs, namely that the brazing material solutes along grain boundaries, which look like cracks. This unfortunate effect occurred when AISI 304 steel is brazed. To avoid this unwanted effect - since the cracks propagate mainly on high angle grain boundaries - our goal was to enhance the number of special coincident site lattice type grain boundaries with thermomechanical treatment. Experiments were performed for 1, 48 and 72 hour heat treatments at different level of cold rolled materials. After the thermomechanical treatment significant decrease in the crack size was found in depth and width, respectively. The grain boundaries were investigated on electro polished samples in an electron microscope with electron backscattered diffraction technique. The brazing was made with Boehler SG-CuSi3 brazing material.

Original languageEnglish
Title of host publicationMaterials Science Forum
Pages442-447
Number of pages6
Volume729
DOIs
Publication statusPublished - 2013
Event8th Hungarian Conference on Materials Science - Balatonkenese, Hungary
Duration: Oct 9 2011Oct 11 2011

Publication series

NameMaterials Science Forum
Volume729
ISSN (Print)02555476

Other

Other8th Hungarian Conference on Materials Science
CountryHungary
CityBalatonkenese
Period10/9/1110/11/11

Fingerprint

brazing
Austenitic steel
Brazing
steels
Grain boundaries
grain boundaries
thermomechanical treatment
Thermomechanical treatment
cracks
Cracks
austenitic stainless steels
Steel
Austenitic stainless steel
Electron diffraction
Crystal lattices
Copper
solutes
heat treatment
Electron microscopes
electron diffraction

Keywords

  • Austenitic steel
  • Coincidence-site lattice
  • Copper brazing
  • Electron backscatter diffraction
  • Intercrystalline cracking
  • Special grain boundaries

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Májlinger, K., & Szabó, P. (2013). Intercrystalline cracking of austenitic steel during brazing. In Materials Science Forum (Vol. 729, pp. 442-447). (Materials Science Forum; Vol. 729). https://doi.org/10.4028/www.scientific.net/MSF.729.442

Intercrystalline cracking of austenitic steel during brazing. / Májlinger, Kornél; Szabó, P.

Materials Science Forum. Vol. 729 2013. p. 442-447 (Materials Science Forum; Vol. 729).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Májlinger, K & Szabó, P 2013, Intercrystalline cracking of austenitic steel during brazing. in Materials Science Forum. vol. 729, Materials Science Forum, vol. 729, pp. 442-447, 8th Hungarian Conference on Materials Science, Balatonkenese, Hungary, 10/9/11. https://doi.org/10.4028/www.scientific.net/MSF.729.442
Májlinger K, Szabó P. Intercrystalline cracking of austenitic steel during brazing. In Materials Science Forum. Vol. 729. 2013. p. 442-447. (Materials Science Forum). https://doi.org/10.4028/www.scientific.net/MSF.729.442
Májlinger, Kornél ; Szabó, P. / Intercrystalline cracking of austenitic steel during brazing. Materials Science Forum. Vol. 729 2013. pp. 442-447 (Materials Science Forum).
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