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·­Ò룺The aspect ratio of the final grain is approximately 1.0 when the radius and volume fraction of second phase particles is 3.0 and 8%, respectively. While the radius of second phase particles is 3.0 and 1.0, respectively,  the aspect ratio of the final grain is approximately 1.0 which needed the volume fraction of second phase particles is 5% and 3%, respectively.

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The aspect ratio of the final grain is approximately 1.0 when the radius and volume fraction of second phase particles are 3.0 and 8% and  the final grain  aspect ratio of  1.0 ,second phase particles  radius of   2.0 and 1.0 required   volume fraction of second phase particles are  5% and 3%, respectively.
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