PL EN


Preferences help
enabled [disable] Abstract
Number of results
2016 | 130 | 4 | 956-959
Article title

Microstructure and Texture Evolution in the Welded Semi-Austenitic PH Steel after the Heat Treatment

Content
Title variants
Languages of publication
EN
Abstracts
EN
The aim of this study was to reveal the influence of the heat treatment after welding of 17-7PH (X7CrNiAl17-7) steel on the microstructure evolution and the texture of the welds. Microstructure investigation carried out by light microscopy and transmission electron microscopy showed that the austenite and δ ferrite coexist in as-welded condition. Annealing at the temperature range between 400°C and 620°C after welding causes small changes in the microstructure and the hardness of the welds increases. Heat treatment at 760°C for 1 h resulted in the partial destabilization of the austenite. Aging after destabilization leads to tempering of the martensite: first the hardness increases and then decreases. The maximum hardness is observed when the ageing temperature reaches 510°C. XRD studies confirmed the presence of the two phases: δ ferrite and austenite. Annealing at 400°C/1 h and 550°C/1 h results in changes of the intensities for individual peaks derived from austenite and ferrite. The calculated ratios of peak intensity were compared with the intensities of the reference sample. The differences in intensities suggested strong texture of the material.
Keywords
Contributors
author
  • AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, al. A. Mickiewicza 30, 30-059 Krakow, Poland
author
  • AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, al. A. Mickiewicza 30, 30-059 Krakow, Poland
  • AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, al. A. Mickiewicza 30, 30-059 Krakow, Poland
References
  • [1] S. Kou, Welding Metallurgy, Wiley Int., Hoboken (NJ) 2003, doi: 10.1002/0471434027
  • [2] E. Tasak, A. Ziewiec, Weldability of Structural Materials, Vol. 1, JAK, Cracow 2009
  • [3] J. Lippold, D. Kotecki, Welding Metallurgy and Weldability of Stainless Steels, Wiley, New Jersey 2005
  • [4] AK steel 17-7 PH stainless steel data sheet http://www.aksteel.com/pdf/markets_products/stainless/precipitation/17-7_ph_data_sheet.pdf
  • [5] M. Witkowska, A. Zielińska-Lipiec, J. Kowalska, W. Ratuszek, Archiv. Met. Mater. 59, 971 (2014), doi: 10.2478/amm-2014-0163
  • [6] X.L. Xu, Z.W. Yu, J. Mater. Process. Technol. 198, 254 (2008), doi: 10.1016/j.jmatprotec.2007.06.085
  • [7] B. Fakić, D. Ćubela, J. Trends Developm. Machin. Assoc. Technol. 17, 57 (2013) http://www.tmt.unze.ba/zbornik/TMT2013Journal/013-TMT13-110.pdf
  • [8] A. Ziewiec, E. Tasak, M. Witkowska, K. Ziewiec, Archiv. Met. Mater. 58, 613 (2013), doi: 10.2478/amm-2013-0046
  • [9] B. Tenerowicz, MSc thesis, AGH, Cracow 2012
  • [10] A. Brooks, W.M. Garrison, Weld. Res. Suppl. 8, 280 (1999) http://img2.aws.org/wj/supplement/aug99/BROOKS.pdf
  • [11] H. Kokawa, T. Kuwana, A. Yamamoto, Weld. Res. Suppl., 92 (1989) http://app.aws.org/wj/supplement/WJ_1989_03_s92.pdf
  • [12] T.J. Headley, J.A. Brooks, Met. Mater. Trans. A 33, 5 (2002), doi: 10.1007/s11661-002-0001-0
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv130n439kz
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.