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Classical theories of grain growth assume that dihedral angles remains fixed, at equilibrium values, during grain growth. This assumption is of questionable validity based upon recent experience with dihedral angles in (partially) fluid systems [16,17] as well as experiments on grain boundary triple junctions (see e.g. Ref. 18). ·Ò룺 ¾§Á£³¤´óµÄ¾µäÀíÂÛ¼ÙÉè¶þÃæ½Ç±£³ÖÒ»¸öƽºâÖµ²»±ä¡£ ÔÚ£¨²¿·Ö£©Á÷ÌåϵͳÖжþÃæ½ÇµÄ×îÐÂʵÑé[16,17] ¼°Èý²æ¾§½çµÄʵÑé[18]±íÃ÷ÉÏÊö¼ÙÉèµÄÓÐЧÐÔ´æÔÚÒÉÎÊ¡£ |
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