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    In an early stage all particles are located at grain boundary, which can escape from some of the particles during grain growth, but easily become straight and therefore lack the driving pressure to pass the particles. Consequently, most of the particles are still located at GB in the final microstructure, with all grain boundaries straight.

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hust_gaoyi

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СÀ¼»¨(½ð±Ò+9, ·­ÒëEPI+1):ллhust_gaoyi µÄ Ôٴΰïæ£¡ ºÇºÇ 2010-07-07 11:46:54
At the initial stage of grain growth, if a grain comes across a second-phase particle, its grain boundary is pinned and the particles located at the grain boundary will grow with the grain while a few grains can escape from the pin of second-phase particle. With the evolvement of the grain, the grain boundary will be gradually straightened with smaller and smaller driving pressure for passing the crystalline particles. Consequently, most of the particles are still located at GB in the finally-gained microstructure, with all grain boundaries being straight.
3Â¥2010-07-07 10:28:39
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zerohead

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СÀ¼»¨(½ð±Ò+3):¶àл°ï棡 ·Ç³£¸Ðл£¡ 2010-07-07 11:47:10
In the early stage of crystal growth,...

[ Last edited by zerohead on 2010-7-7 at 12:22 ]
2Â¥2010-07-07 09:53:04
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hust_gaoyi

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if a grain comes across a second-phase particle, its grain boundary is (¸Ä³É will be) pinned
4Â¥2010-07-07 12:12:12
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