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[ Last edited by qingfeng7998 on 2012-8-28 at 21:01 ]

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3Â¥2012-08-29 21:36:07
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liujc1987

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qingfeng7998: ½ð±Ò+30, ·­ÒëEPI+1, ¡ïÓаïÖú, ллÄúµÄ°ïÖú£¡Ï£ÍûÄܹ»·­Òë¸üµØµÀЩ¾Í¸üÍêÃÀÁË¡£ 2012-08-29 21:29:59
1¡¢As the fracture surface of material is rugged, the region between reinforcement and matrix is prone to make cracks and diversions and to even produce bigger gaps, which indicates that the combined surface between reinforcement and matrix is vulnerable to reduce the flexural strength of material.
2¡¢The mark of extracted grain crystal is apparent in the picture, which makes clear that the grain crystals are combined closely to improve the flexural strength of material greatly.
3¡¢The fracture surface of material is relatively smooth. A large quantity of liquid phase gathers on the surface, and a certain number of holes begin to appear in the sample, thereby the density and flexural strengthen of material reduce further.
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2Â¥2012-08-29 13:11:54
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chelinran

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qingfeng7998: ½ð±Ò+50, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, ·Ç³£¸Ðл£¡¶ÔÎÒºÜÓаïÖú£¡ 2012-08-30 11:28:23
qingfeng7998: »ØÌûÖö¥ 2012-08-30 11:28:29
1¡¢As the fracture surface of material is rugged, the region between reinforcement and matrix is prone to crack deflection and even larger gaps, which indicates relatively weak bonding between reinforcement and matrix. Thus, the material has lower bending strength.
2¡¢The mark of extracted grain crystal can be seen in the figure, and the grain crystals are bonded tightly, thus greatly improving the bending strength of material.
3¡¢The fracture surface of material is relatively smooth. A large amount of liquid phase gathers on the surface, and a certain number of holes begin to appear in the sample, thereby further decreasing the density and bending strengthen of material.
4Â¥2012-08-29 23:28:59
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