Microstructure and thermal stability of an ultrafine Al/Al2O3 composite

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	Microstructure and thermal stability of an ultrafine Al/Al2O3 composite
	Z. Q. Yang; L. L. He; J. Chen; H. T. Cong; H. Q. Ye
	2003
发表期刊	Journal of Materials Research
ISSN	0884-2914
卷号	18 期号:2 页码:272-278
摘要	Studies were carried out on the microstructure and thermal stability of an ultrafine Al/Al2O3 composite with high strength and low density. Transmission electron microscopy indicated that Al2O3 shells remained undeformed below 550 degreesC, which limited grain growth of Al. Both transmission electron microscopy and x-ray diffraction analysis indicated that no obvious grain growth of Al with time occurred upon annealing at 620 degreesC. After almost all the alumina shells were destroyed following annealing at 620 degreesC, the Al2O3 fragments with various morphologies distributed in the material could still limit the migration of Al grain boundaries to increase the thermal stability of the material. After Al melted and resolidified, the grain sizes of Al were still about 200 run. The bulk composite sample showed good dimensional stability. Even if the Al grains melted, the network of Al2O3 fragments kept the sample from deforming due to the wetting of Al2O3 network with liquid Al.
部门归属	chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china.;yang, zq (reprint author), chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china
关键词	Nanocrystalline Materials Consolidated Composites Aluminum Al Matrix
URL	查看原文
WOS记录号	WOS:000180889900006
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/36126
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. Q. Yang,L. L. He,J. Chen,et al. Microstructure and thermal stability of an ultrafine Al/Al2O3 composite[J]. Journal of Materials Research,2003,18(2):272-278.
APA	Z. Q. Yang,L. L. He,J. Chen,H. T. Cong,&H. Q. Ye.(2003).Microstructure and thermal stability of an ultrafine Al/Al2O3 composite.Journal of Materials Research,18(2),272-278.
MLA	Z. Q. Yang,et al."Microstructure and thermal stability of an ultrafine Al/Al2O3 composite".Journal of Materials Research 18.2(2003):272-278.