94 Prakt. Met. Sonderband 46 (2014)
was prepared from the region with deformation intensity about £~ 3.8 %. It is easy to DETAILL
notice from the IPF map that the fine grains have different crystallographic orientation. FERRITIS
However, the columnar growing grains have mainly the Goss and cubic orientation. In
other words it was obtained an columnar growth of [110]{001} and [100]{100} oriented J. Kimmel*,
grains that started to grow in area of applied impress deformation.
* Institut fu
D-76131
4. SUMMARY ** | aboratol
(KIT), D-
The grain boundary migration induced by deformation gradient in NO steel was
investigated. Three different types of deformation gradient were applied to the investigated
NO steel.
Summarizing the obtained results in the present work one can conclude: ABSTRAC
The described application of deformation gradient enables to investigate the dynamic
of grain growth in dependence of deformation intensity within one sample. Fir die detai
The final microstructure is depended on applied intensity of deformation. der spanenc
Abnormal grain growth takes place in the deformed area of the investigated samples. (z.B. Nital) |
This kind of grain growth proceeded along the decreasing of deformation gradient Verstandnise
direction. Bereich del
The primary recrystallized microstructure was observed in the samples at the area with iibertragssct
absence of deformation. platte) und
Bereich 501
erfolgreich r
ACKNOWLEDGEMENT Temperatur
. : Zn ) ; Gefügechare
This work was carried out within the framework of the project “High strength Schnittgesct
electrotechnical composite steels”, which is supported by the Slovak Research and ve = 100 m/n
Development Agency under No. APVV-0147-11. This work was also supported by the metallograpt
Slovak Grant Agency VEGA 2/0083/13. Also, this work was realized within the frame of the eine Verifizi
project “Technology of preparation of electrotechnical steels possessing high permeability analysiert.
for high affectivity electromotors” ITMS 26220220037, financed through European
Regional Development Fund.
1. EINLEN
REFERENCES Nanokristalli
[1] Steiner Petrovic, D.: “Non-oriented electrical steel sheets”, Materiali in Tehnologije, plastic defor
51, 2010, pp. 317 ass die Veı
[2] Denma, H., Ishihara, Y., Todaka, T., Doi, M.: “Effect of grain diameter on iron loss von &=1-5
properties of non-oriented silicon steel sheets”, Journal of Magnetism and Magnetic angular pre
Materials, 215-216, 2000, p. 106 eingesetzt. |
[3] Kovac, F., Dzubinsky, M., Sidor, J.: “Columnar grain growth in non-oriented electrical Materialbere
steels”, Journal of Magnetism and Magnetic Materials, 269, 2004, p.333 Im Rahmen
[4] Gottstein, G., Shvindlerman, L. S.: “Grain boundary migration in metals”, CRC Press, i
1999, p.385
[5] Rios R. R., Glicksman M. E.: “Topological and metrical analysis of normal grain verfestigtem
growth in three dimensions”, Acta Materialia 55, 2007, p.1565 schematisch
In Abb. 1 i
Aufbauschne
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