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Chin J Mater Res  2009, Vol. 23 Issue (3): 237-241    DOI:
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Influence of shot blasting on matrix mechanical properties of the surface on TiB2/Al composite
LUAN Weizhi1; JIANG Chuanhai1;  Vincent Ji2
1.School of Materials Science and Engineering; Shanghai Jiao Tong University; Shanghai 200240
2.LEMHE/ICMMO; UMR 8182; Universite Paris-Sud 11; 91405 Orsay France
Cite this article: 

LUAN Weizhi JIANG Chuanhai Vincent Ji. Influence of shot blasting on matrix mechanical properties of the surface on TiB2/Al composite. Chin J Mater Res, 2009, 23(3): 237-241.

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Abstract  

The microstructures were determined by X-ray diffraction line profile analysis. The influence of shot blasting on the matrix mechanical properties of the surface on TiB2/6351Al was investigated by using in situ tension X-ray diffraction technique. Results show that the proof stress of the matrix in the shot blasted surface had been increased by about 26% and the integral strength had been increased by 28\%. Moreover, the increment of hardness is more than 50%. The bearing stress factor of the matrix of untreated and shot peened surface is 81% and 83%, respectively. The domain size and the dislocation density of the strengthened surface are 51 nm and 3.05 X 1014m-2. The increment of mechanical properties is mainly due to the fine domain and high value of dislocation density introduced by shot blasting.

Key words:  composites      shot blasting      matrix mechanical properties      X-ray diffraction      metal matrix composite      microstructures     
Received:  01 September 2008     
ZTFLH: 

TG115

 
Fund: 

Supported by National Natural Science Foundation of China No.50771066 and Magnolia Science & Technology Talent Fund No.2007B071.

URL: 

https://www.cjmr.org/EN/     OR     https://www.cjmr.org/EN/Y2009/V23/I3/237

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