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With the phase field crystal approach, the structure of asymmetrical tilt subgrain boundaries and their motion micmechanism under stress are studied. The effects of temperature, inclination angle and stress direction on structure and migration process are also analyzed and discussed. Simulated results show that the subgrain boundary is composed of a row of edge dislcations with the same bugers vectors and the double-array dislocations with a vertical distribution. The motion process of asymmetrical tilt subgrain boundaries contains dislocation glide and climb, dislocation separation, dislocation reaction, individual dislocation decomposition and dislocation annihilation. The decrease of temperature and the increase of inclination angle hinder the subgrain boundary migration process. The change of stress direction causes the variation of dislocation motion and thus lead to the change in migration manner of subgrain boundary.
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Keywords:
- phase field crystal /
- subgrain boundary /
- asymmetrical tilt
[1] Raimbourg H, Kogure T, Toyoshima T 2011 Contrib. Mineral Petrol. 162 1093
[2] Sedlácek R, Blum W, Kratochvil J, Forest S 2002 Metal. Mater. 33 319
[3] Molodov D A, Gorkaya T, Gottstein G 2011 Instit. Phys. Metal. Metal Phys. 46 4318
[4] Xie H X, Liu B, Yin F X, Yu T 2013 Chin. Phys. B 22 010204
[5] He S Z, Hou G, Su C F, Wu C X 2013 Chin. Phys. B 22 016101
[6] Wang C Y, Meng Q Y, Wang Y T 2009 Acta Metall. Sin. 45 400(in Chinese)[王超营, 孟庆元, 王云涛 2009 金属学报 45 400]
[7] Elder K R, Katakowski M, Grant M 2002 Phys. Rev. Lett. 88 245701
[8] Elder K R, Grant M 2004 Phys. Rev. E 70 051605
[9] Ren X, Wang J C, Yang Y J, Yang G C 2010 Acta Phys. Sin. 59 3595(in Chinese)[任秀, 王锦程, 杨玉娟, 杨根仓 2010 物理学报 59 3595]
[10] Zhang Q, Wang J C, Zhang Y C, Yang G C 2011 Acta Phys. Sin. 60 088104(in Chinese)[张琪, 王锦程, 张亚从, 杨根仓 2011 物理学报 60 088104]
[11] Yang T, Chen Z, Zhang J, Dong W P, Wu L 2012 Chin. Phys. Lett. 29 078103
[12] Huang Z F, Elder K R 2008 Phys. Rev. Lett. 101 158701
[13] Yang T, Chen Z, Dong W P 2011 Acta Metal. Sin. 47 1301(in Chinese)[杨涛, 陈铮, 董卫平 2011 金属学报 47 1301]
[14] Wu K A, Voorhees P W 2009 Phys. Rev. B 80 125408
[15] Wu K A, Adland A, Karma A 2010 Phys. Rev. E 81 061601
[16] Hirouchi T, Takaki T, Tomita Y 2009 Comput. Mater. Sci. 44 1192
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[1] Raimbourg H, Kogure T, Toyoshima T 2011 Contrib. Mineral Petrol. 162 1093
[2] Sedlácek R, Blum W, Kratochvil J, Forest S 2002 Metal. Mater. 33 319
[3] Molodov D A, Gorkaya T, Gottstein G 2011 Instit. Phys. Metal. Metal Phys. 46 4318
[4] Xie H X, Liu B, Yin F X, Yu T 2013 Chin. Phys. B 22 010204
[5] He S Z, Hou G, Su C F, Wu C X 2013 Chin. Phys. B 22 016101
[6] Wang C Y, Meng Q Y, Wang Y T 2009 Acta Metall. Sin. 45 400(in Chinese)[王超营, 孟庆元, 王云涛 2009 金属学报 45 400]
[7] Elder K R, Katakowski M, Grant M 2002 Phys. Rev. Lett. 88 245701
[8] Elder K R, Grant M 2004 Phys. Rev. E 70 051605
[9] Ren X, Wang J C, Yang Y J, Yang G C 2010 Acta Phys. Sin. 59 3595(in Chinese)[任秀, 王锦程, 杨玉娟, 杨根仓 2010 物理学报 59 3595]
[10] Zhang Q, Wang J C, Zhang Y C, Yang G C 2011 Acta Phys. Sin. 60 088104(in Chinese)[张琪, 王锦程, 张亚从, 杨根仓 2011 物理学报 60 088104]
[11] Yang T, Chen Z, Zhang J, Dong W P, Wu L 2012 Chin. Phys. Lett. 29 078103
[12] Huang Z F, Elder K R 2008 Phys. Rev. Lett. 101 158701
[13] Yang T, Chen Z, Dong W P 2011 Acta Metal. Sin. 47 1301(in Chinese)[杨涛, 陈铮, 董卫平 2011 金属学报 47 1301]
[14] Wu K A, Voorhees P W 2009 Phys. Rev. B 80 125408
[15] Wu K A, Adland A, Karma A 2010 Phys. Rev. E 81 061601
[16] Hirouchi T, Takaki T, Tomita Y 2009 Comput. Mater. Sci. 44 1192
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