Journal
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
Volume 26, Issue 8, Pages 759-762Publisher
JOURNAL MATER SCI TECHNOL
DOI: 10.1016/S1005-0302(10)60120-X
Keywords
Recrystallization; Precipitates; Goss grain; Abnormal grain growth; Grain-oriented electrical steel
Funding
- National Natural Science Foundation of China [50871015]
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With the help of electron back scattering diffraction techniques and field emission microscope, the misorientation and the precipitation environment of Goss grains in conventional grain-oriented steel were observed and investigated at the initial stage of secondary recrystallization. It reveals that the abnormal Goss grains have a high fraction of high angle boundaries ranging from 25 to 40 deg. The most important observation is that some of {110}< 001 > grains in matrix indicated higher particle density than their neighbor grains during final annealing at 875 degrees C before secondary recrystallization, which could create a favorable environment for their abnormal grain growth. Based on misorientation and precipitation results, the abnormal growth mechanism of Goss grains was sketched.
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