Preparation and mechanical properties of highly densified nanocrystalline Al

IMR OpenIR

	Preparation and mechanical properties of highly densified nanocrystalline Al
	Sun, XK ; Cong, HT ; Sun, M ; Yang, MC
通讯作者	Sun, XK()
	2000-03-01
发表期刊	METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
ISSN	1073-5623
卷号	31 期号:3A 页码:1017-1024
摘要	The preparation of highly densified nanocrystalline (NC) Al was conducted in three steps. First, the NC Al powder was synthesized by an active H-2 plasma evaporation method. Then, the NC Al powder was compacted at room temperature into disk-shaped samples with a 25-mm diameter and 2-mm thickness and was sintered at 620 degrees C or 635 degrees C (sintered NC Al), The sintering does not result in grain growth. Finally the sintered NC Al was rolled at room temperature into sheet samples with a 1-mm thickness and 99 pet relative density (cold-deformed NC Al). The microhardnesses and tensile properties of the sintered NC Al and cold-deformed NC Al were tested at room temperature. The results show that their strengths are basically the same, and the yield strengths (sigma(0.2)) and tensile strengths (sigma(b)) are 12 to 16 and 5 to 6 times those of annealed coarse-grained Al, respectively, but the elongation to failure of the cold-deformed NC Al is up to 8 pct, which is 2 times that of the sintered NC Al and higher than that of cold-deformed, coarse-grained Al by 30 pct. The failure features of the sintered NC Al and cold-deformed NC Al belong to typical plastic fracture with ductile dimples, and the mechanism of failure is transgranular shear fracture.
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000086107100022
出版者	MINERALS METALS MATERIALS SOC
引用统计	被引频次：76[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/321006/110798
专题	中国科学院金属研究所
通讯作者	Sun, XK
作者单位	1.Chinese Acad Sci, Inst Met Sci, State Key Lab RSA, Shenyang 110015, Peoples R China 2.PR China Med Univ, Dept Phys, Shenyang 110001, Peoples R China
推荐引用方式 GB/T 7714	Sun, XK,Cong, HT,Sun, M,et al. Preparation and mechanical properties of highly densified nanocrystalline Al[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2000,31(3A):1017-1024.
APA	Sun, XK,Cong, HT,Sun, M,&Yang, MC.(2000).Preparation and mechanical properties of highly densified nanocrystalline Al.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,31(3A),1017-1024.
MLA	Sun, XK,et al."Preparation and mechanical properties of highly densified nanocrystalline Al".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 31.3A(2000):1017-1024.