Abstract
Heat treatment of spray deposition 10% SiCp/6066 (ϕ(SiCp) = 10%) composites was investigated by means of hardness measurement. The results show that heat treatment technology is influenced by the presence of SiC particles. Compared with the base alloy 6066, the composites have lower burning temperature and is burnt at 540 °C due to the enrichment of Mg and Cu atoms in the SiCp/6066 interfaces. As a result, solution treatment of the composites should be carried out at lower temperature. The aging parameter values such as the aging temperature, the precipitation temperature of β′ and β phases, as well as the peak aging time, become lower. The optimum heat treatment process conditions are that the composites are solution-treated at 515 °C and aged at 165 °C for 5 h.
Similar content being viewed by others
References
Salvo L, Suery M. Effect of reinforcement on age hardening of cast 6061 Al-SiC and 6061 Al-Al2O3 particulate composites[J]. Mater Sci and Eng, 1994, A(177): 19–28
Seyed Reihani S M, Dafir D, Merle P. Experimental analysis of the acceleration of β′ precipitation in a 6061/SiCp composite[J]. Scrpta Metallurgica et Materialia, 1993, 28(5): 639–644
American Metal Institute. Metal handbook (Vol. 2, 9th ed) (in Chinese)[M]. Beijing: Mechanical Industry Press, 1988
QIU Cheng-ling. Aluminum standard and data of American aluminum society (in Chinese)[M]. Chongqin: the Branch of References Press of Science and Technology, 1989
WANG Zhu-tang, TIAN Rong-zhang. A handbook on aluminum alloys and machining of aluminum alloys (in Chinese)[M]. Changsha: Central South Univer-sity of Technology Press, 1980: 18, 21
Strangwood M, Hippsley C A, Lewandowski J J. Segregation to SiC/Al interfaces in Al based mental martrix composites[J]. Scripta Metallurgica et Materialia, 1990, 24: 1483–1487
GUO Hong. Study on the chemical states of both the original surface of SiC particles and the interface of SiCp/Al composite[J]. Acta Materiae Compositate Sinica, 1997, 14: 42–47
SONG Y, Baker T N. A calorimetric and metallographic study of precipi-tation process in AA6061 and its composites[J]. Mater Sci and Eng, 1995, A(201): 251–260
LI Qiao-miao. Foreign technology on heat treatment (in Chinese) [M]. Beijing: Metallurgical Industry Press, 1981
Author information
Authors and Affiliations
Additional information
Foundation item: The Key Program of the 9th Five-year Plan of China (No. 95-YS-004)
Biography of the first author: GONG Hao-ran, born in 1968, majoring in welding and heat-treatment of aluminum composites.
Rights and permissions
About this article
Cite this article
Gong, Hr., Li, Wx. Heat treatment of spray deposition SiCp/6066 aluminum matrix composites. J Cent. South Univ. Technol. 7, 61–64 (2000). https://doi.org/10.1007/s11771-000-0032-x
Received:
Issue Date:
DOI: https://doi.org/10.1007/s11771-000-0032-x