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Effect of Sc addition, friction stir processing, and T6 treatment on the damping and mechanical properties of 7055 Al alloy
Liu, C. Y.; Zhang, B.; Ma, Z. Y.; Jiang, H. J.; Zhou, W. B.
2019-01-25
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume772Pages:775-781
AbstractSc addition, friction stir processing (FSP), and subsequent solid-solution treatment and aging to peak hardness (T6 treatment) were applied on a 7055 Al alloy. Fine equiaxed grains were obtained after FSP, and the size of the grains was further refined by minor Sc addition. Subsequent solid-solution treatment led to the dissolution of eta phase, and aging led to the precipitation of eta' phase in the FSP samples. The Al-3(Sc,Zr) particles effectively inhibited the grain coarsening in the Sc-containing FSP sample during the T6 process. Thus, a high density of eta' phase and a fine equiaxed grain structure were obtained in the Sc-containing 7055 alloy after FSP and T6 treatment. The special structure endowed this alloy with higher yield strength than the T6 treated 7055 alloy. FSP enhanced the high-temperature internal friction value of the Sc-containing 7055 alloy, and subsequent T6 treatment did not significantly reduce the value. The Sc-containing 7055 alloy exhibited greater high-temperature internal friction value than the T6 samples and the 7055 alloy fabricated using the same processing route. (C) 2018 Elsevier B.V. All rights reserved.
KeywordAl alloy Microstructure Damping capacity Mechanical properties
Indexed BySCI
Language英语
WOS IDWOS:000449651100093
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81438
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Liu, C. Y.,Zhang, B.,Ma, Z. Y.,et al. Effect of Sc addition, friction stir processing, and T6 treatment on the damping and mechanical properties of 7055 Al alloy[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,772:775-781.
APA Liu, C. Y.,Zhang, B.,Ma, Z. Y.,Jiang, H. J.,&Zhou, W. B..(2019).Effect of Sc addition, friction stir processing, and T6 treatment on the damping and mechanical properties of 7055 Al alloy.JOURNAL OF ALLOYS AND COMPOUNDS,772,775-781.
MLA Liu, C. Y.,et al."Effect of Sc addition, friction stir processing, and T6 treatment on the damping and mechanical properties of 7055 Al alloy".JOURNAL OF ALLOYS AND COMPOUNDS 772(2019):775-781.
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