Acta Metall Sin  2011, Vol. 47 Issue (3): 298-304    DOI: 10.3724/SP.J.1037.2010.00413

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EFFECT OF HOT PRESSING TEMPERATURE ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF SiC PARTICLE REINFORCED ALUMINUM MATRIX COMPOSITES

JIN Peng, XIAO Bol¨u, WANG Quanzhao, MA Zongyi, LIU Yue, LI Shu

Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016

JIN Peng XIAO Bolu WANG Quanzhao MA Zongyi LIU Yue LI Shu. EFFECT OF HOT PRESSING TEMPERATURE ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF SiC PARTICLE REINFORCED ALUMINUM
MATRIX COMPOSITES. Acta Metall Sin, 2011, 47(3): 298-304.

Abstract References Related Articles Recommended Metrics Download:  PDF(3027KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The effects of hot pressing temperature on microstructures and tensile properties of 15% (volume fraction) SiCp/2009Al composites were investigated in this paper. The relative density of the composites increased rapidly with increasing the hot pressing temperature up to 580 ℃ and decreased with further increasing the temperatures. TEM observations revealed that the interface bonding was quite weak with the interface crack when the hot pressing temperature was below 560 ℃. When the composites were hot pressed at 580 and 600 ℃, the interface was clean and had a good interface bonding. The MgAl2O4 and Al4C3 formed at the interfaces when the hot pressing temperature was above 620 ℃. Tensile tests indicated that the composite fabricated at 580 ℃ exhibited the optimum strengtand ductility. Fractography revealed that for the composite fabricated at the hot pessing temperture below 560 ℃, the fracture mechanism was mainly the interfacial debonding. For the compositfabrcated at 580 and 600 ℃, the fracture mechanism of the composite was the matrix ductile fracture and the SiC particle fracture, When the hot pressing temperature was above 620 ℃, the interface fractured along MgAl2O4 and Al4C3, and the fracture mechanism of the composite was the matrix ductile fracture, the interface crack and the particle fracture. Key words:  aluminum matrix composite      vacuum hot pressing      interface      mechanical property      Received:  17 August 2010      ZTFLH:  TF124   Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors JIN Peng XIAO Ba-Lv YU Quan-Zhao MA Zong-Xi LIU Huo LI Shu URL:  https://www.ams.org.cn/EN/10.3724/SP.J.1037.2010.00413     OR     https://www.ams.org.cn/EN/Y2011/V47/I3/298 [1] Ouyang Q B, Li R X, Wang W L, Zhang G D, Zhang D. Mater Sci Forum, 2007; 546–549: 1551 [2] Chawla N. Adv Mater Process, 2006; 164(7): 29 [3] Rawal S. J Met, 2001; 53(4): 14 [4] Chawla N, Chawla K K. J Met, 2006; 58(11): 67 [5] Evans R D, Boyd J D. Scr Mater, 2003; 49: 59 [6] Zhou J, Dru˙zd˙zel A T, Duszczyk J. J Mater Sci, 1999; 34: 5089 [7] Gupta A K. Bull Mater Sci, 1995; 18: 773 [8] Geng L, Qu S J, Lei T Q. Key Eng Mater, 2003; 249: 233 [9] Savitskii A P, Romanov G N, Marisunova L S. Russ Phys J, 1968; 11(8): 5 [10] Savitskii A P, Romanov G N. 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