Fabrication of Al-35Zn alloys with excellent damping capacity and mechanical properties

被引:45
|
作者
Jiang, H. J. [1 ]
Liu, C. Y. [1 ,2 ]
Ma, Z. Y. [2 ]
Zhang, X. [3 ]
Yu, L. [1 ]
Ma, M. Z. [3 ]
Liu, R. P. [3 ]
机构
[1] Guilin Univ Technol, Minist Educ, Key Lab New Proc Technol Nonferrous Met & Mat, Guilin 541004, Peoples R China
[2] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
[3] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China
基金
中国国家自然科学基金;
关键词
Al alloy; Rolling; Damping capacity; Mechanical properties; MG-SC ALLOY; AL-ZN ALLOY; SEVERE PLASTIC-DEFORMATION; DYNAMIC YOUNGS MODULUS; HEAT-TREATMENT; ROOM-TEMPERATURE; MAGNESIUM ALLOY; EUTECTOID ALLOY; BEHAVIOR; MICROSTRUCTURE;
D O I
10.1016/j.jallcom.2017.06.091
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In this study, rolling was performed on a binary Ale35Zn alloy. The grain refinement and dynamic precipitation were obtained in the rolled samples. The nano-sized Zn phase with a rod-like shape was obtained in the hot rolled sample, whereas the precipitated Zn phases were coarsened to hundreds nanometer with an equiaxed shape and located at the triple junctions of the Al grains after cold rolling. The cold rolled sample exhibited excellent damping capacity, mainly attributed to the special microstructure characterized by fine grains, low solid solubility, and wetting interface between Al and Zn phases. Furthermore, the cold rolled sample showed a ductile fracture and high ultimate tensile strength, with the main strengthening mechanisms being dislocation and boundary strengthening. The hot rolled sample with 90% reduction showed balanced mechanical properties, including high strength and reasonable ductility. This work provided an effective strategy of preparing Al alloys with excellent damping capacity and mechanical properties. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码:138 / 144
页数:7
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