Abstract��It is well known that Fe-Si(6.5% in mass percent) alloy is one kind of excellent soft magnetic materials with higher relative permeability, lower coercive force and iron loss than those of conventional industrial silicon steel(wSi < 4.5%). It is very hard to produce Fe-6.5Si alloy into thin sheet by conventional rolling method because of its room-temperature embrittlement and poor workability resulted from the formation of ordered phases like B2 and D03, especially reactions towards the D03 ordered phase. Iron-based alloys containing silicon(6.5% in mass percent) form two kinds of ordered structures of B2 and D03 on the basis of the fundamental crystal lattice of bcc. X-ray diffraction of this alloy sheet shows that a lot of X-ray diffraction peaks of these phases are superposed, which make it difficult to quantitatively analyze the fraction of D03 phase. Volume fraction of D03 phase is investigated by direct comparison method. The analysis shows that {hkl} diffraction structure factor of A2 phase is the same as that of B2 phase while h+k+l is even. Therefore, A2 and B2 phases are regarded into one, by appropriately adjusting the formula for direct comparison method for XRD ,and one can directly separate the characteristic diffraction peak of D03 phase from the superposed diffraction peak of the three phases. Using this method, the volume fraction of D03 phase is calculated.
����ǿ��ë����. Fe-6.5Si�߹������������D03��Ķ�������[J]. �й������ڿ���, 2012, 30(3): 7-10.
WANG Wen-qiang,MAO Wei-min. Quantitative Analysis of D03 Phase in Cold Rolled Fe-6.5Si Alloy Sheet. Chinese Journal of Iron and Steel, 2012, 30(3): 7-10.
2012, Vol. 30 
