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摘要:
A multiple grain size distributed Al-based composite was fabricated through ball milling the amorphous powder mixed with pure Al powder followed by spark plasma sintering. The composite consisted of amorphous/nanocrystalline, submicron grain and micron grain, exhibiting outstanding mechanical properties. The superior strengthen effect of the amorphous/nanocrystalline region contributed to the exhibiting specific strength (5.66 x 10(5) Nm/kg) of the composite. The orderly plastic deformation occurred within FCC-Al micron grain region and submicron grain region during compression. And the progressive deformation restrained the strain localization and unstable propagation of the crack, leading to the plastic deformation (4.3%) of the composite. (c) 2017 Elsevier B.V. All rights reserved.
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来源 :
JOURNAL OF ALLOYS AND COMPOUNDS
ISSN: 0925-8388
年份: 2018
卷: 737
页码: 308-316
6 . 2 0 0
JCR@2022
ESI学科: MATERIALS SCIENCE;
ESI高被引阀值:260
JCR分区:1