Abnormal growth of {100} grains and strong Cube texture in strip cast Fe-Si electrical steel

Fang, Feng; Zhang, Y.X.; Lu, Xu; Wang, Y.; Lan, Meng-Fei; Yuan, Guo; Misra, R.D.K.; Wang, G.D.

doi:10.1016/j.scriptamat.2017.12.034

Cited by 43 publications

(17 citation statements)

References 20 publications

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“…{001}〈100〉 isolated texture formed in PW-UNR-REC, PW-CRR-REC, PW-CLR-REC and WL10-UNR-REC may be resulted from the following reasons: on the one hand, recrystallization grains with {001}〈100〉 orientation would be nucleated in the deformed grains with {111}〈112〉 and {001}〈100〉 orientations [35,36]. On the other hand, initial deformed grains with {001}〈100〉 orientation is quasi-stable and can be partially preserved during recrystallization due to the texture inheritance [37]. In fact, {001}〈100〉 and {111}〈112〉 textures were detected in PW-UNR.…”

Section: Recrystallization Isolated Texturementioning

confidence: 99%

Texture evolution of tungsten materials during recrystallization

Zhang¹,

Zheng²,

Huang³

et al. 2020

Mater. Res. Express

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Some functional and structural performance of tungsten (W) are related to its texture characteristics. Usually, W serves in high temperature and may undergo recrystallization. Thus it's necessary to evaluate the recrystallization texture of W. In our previous studies, pure W (PW) and W-1.0wt%La 2 O 3 (WL10) were deformed via unidirectional rolling (UNR), cross rolling (CRR) and clock rolling (CLR) with 80% reduction. In the present paper, PW-UNR, PW-CRR, PW-CLR and WL10-UNR were subjected to annealing at 2073 K for 2 h to achieve recrystallization and figure out the evolution mechanism of recrystallization texture in W materials. Besides, the effect of La 2 O 3 on recrystallization texture of W was discussed. The results indicated that the fiber textures in rolling state were transformed into isolated textures after recrystallization. {001}〈uvw〉 isolated texture formed in the recrystallized W may be mainly resulted from the texture inheritance. {113}〈361〉 isolated texture formed in the recrystallized WL10-UNR may be attributed to the orientated growth of {113}〈361〉 grains with high grain boundary mobility facilitated by La 2 O 3 . Generally, isolated textures near θ-fiber were strengthened while γ-fiber was weakened for W during recrystallization, which is an effective method to achieve W with more {001} and less {111} textures.

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Section: Recrystallization Isolated Texturementioning

confidence: 99%

Texture evolution of tungsten materials during recrystallization

Zhang¹,

Zheng²,

Huang³

et al. 2020

Mater. Res. Express

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show abstract

“…In the last few decades, there has been a dramatic proliferation of research related to the mechanism of crystal growth, since it affects the properties of crystal structure in the thermal annealing process [7][8][9][10][11][12][13][14][15][16][17]. A lot of research has been done in this field to observe large grain growth [18][19][20][21][22][23][24][25][26][27][28]. The extra-large grain growth in polycrystalline Cu is called abnormal grain growth.…”

Section: Introductionmentioning

confidence: 99%

Anisotropic Grain Growth in (111) Nanotwinned Cu Films by DC Electrodeposition

Shen

et al. 2019

Materials

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We have reported a method of fabricating (111)-orientated nanotwinned copper (nt-Cu) by direct current electroplating. X-ray analysis was performed for the samples annealed at 200 to 350 • C for an hour. X-ray diffraction indicates that the (200) signal intensity increases while (111) decreases. Abnormal grain growth normally results from transformation of surface energy or strain energy density. The average grain size increased from 3.8 µm for the as-deposited Cu films to 65-70 µm after the annealing at 250 • C for 1 h. For comparison, no significant grain growth behavior was observed by random Cu film after annealing for an hour. This research shows the potential for its broad electric application in interconnects and three-dimensional integrated circuit (3D IC) packaging.

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“…Abnormal grain growth (AGG) refers to a subset of grains that will grow excessively at the expense of surrounding normal grains leading to an obvious size advantage of the abnormal grains [1,2]. The AGG phenomenon has been observed in many materials, including steels [3][4][5][6][7][8][9][10][11], aluminum alloys [12,13], super alloys [14][15][16], ceramics [17][18][19][20][21], nanocrystalline materials [22][23][24][25] as well as thin films [25][26][27][28]. AGG is of important technological relevance and must be controlled in the thermal processing of polycrystalline materials.…”

Section: Introductionmentioning

confidence: 99%

“…For example, Furnish et al [23] showed that AGG leads to fatigue failure in nanocrystalline Ni-Fe. In some cases, however, AGG is a useful microstructure engineering concept, also known as secondary recrystallization, e.g., for the development of Goss or cube textures in electrical steels [4,[9][10][11]29]. Similarly, AGG is beneficial for magnetostrictive Fe-Ga alloys as well as Fe-based shape memory alloys [30,31].…”

Section: Introductionmentioning

confidence: 99%

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Phase Field Modelling of Abnormal Grain Growth

2019

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Heterogeneous grain structures may develop due to abnormal grain growth during processing of polycrystalline materials ranging from metals and alloys to ceramics. The phenomenon must be controlled in practical applications where typically homogeneous grain structures are desired. Recent advances in experimental and computational techniques have, thus, stimulated the need to revisit the underlying growth mechanisms. Here, phase field modelling is used to systematically evaluate conditions for initiation of abnormal grain growth. Grain boundaries are classified into two classes, i.e., high- and low-mobility boundaries. Three different approaches are considered for having high- and low-mobility boundaries: (i) critical threshold angle of grain boundary disorientation above which boundaries are highly mobile, (ii) two grain types A and B with the A–B boundaries being highly mobile, and (iii) three grain types, A, B and C with the A–B boundaries being fast. For these different scenarios, 2D simulations have been performed to quantify the effect of variations in the mobility ratio, threshold angle and fractions of grain types, respectively, on the potential onset of abnormal grain growth and the degree of heterogeneity in the resulting grain structures. The required mobility ratios to observe abnormal grain growth are quantified as a function of the fraction of high-mobility boundaries. The scenario with three grain types (A, B, C) has been identified as one that promotes strongly irregular abnormal grains including island grains, as observed experimentally.

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Abnormal growth of {100} grains and strong Cube texture in strip cast Fe-Si electrical steel

Cited by 43 publications

References 20 publications

Texture evolution of tungsten materials during recrystallization

Texture evolution of tungsten materials during recrystallization

Anisotropic Grain Growth in (111) Nanotwinned Cu Films by DC Electrodeposition

Phase Field Modelling of Abnormal Grain Growth

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