Microstructural evolution and thermal stability of 1050 commercial pure aluminum processed by high-strain-rate deformation

Yang Yang; Ya Dong Chen; Hai Bo Hu; Tie Gang Tang; Ren Rong Long; Qing Ming Zhang

doi:10.1557/jmr.2015.341

Microstructural evolution and thermal stability of 1050 commercial pure aluminum processed by high-strain-rate deformation

Yang Yang, Ya Dong Chen^*, Hai Bo Hu, Tie Gang Tang, Ren Rong Long, Qing Ming Zhang

^*Corresponding author for this work

School of Mechatronical Engineering

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

Microstructural and property evolution of 1050 commercial pure aluminum subjected to high-strain-rate deformation (1.2-2.3 × 10³ s^-1) by split Hopkinson pressure bar (SHPB) and subsequent annealing treatment were investigated. The as-deformed and their annealed samples at 373-523 K were characterized by transmission electron microscopy (TEM) and microhardness tests. TEM observations reveal that the as-deformed sample is mainly composed of a lamellar structure, whose transverse/longitudinal average subgrain/cell sizes are 293 and 694 nm, respectively. The initial coarse grains are refined significantly. The initial lamellar grain structures are subdivided into pancake-shaped subgrains due to a gradual transition by triple junction motion at 473 K, and then a dramatic microstructural coarsening is observed at 523 K. It is suggested that annealing behavior of this dynamic loading structure is better considered as a continuous process of grain coarsening or continuous recovery.

Original language	English
Pages (from-to)	3502-3509
Number of pages	8
Journal	Journal of Materials Research
Volume	30
Issue number	22
DOIs	https://doi.org/10.1557/jmr.2015.341
Publication status	Published - 2 Nov 2015

Keywords

annealing
hardness
microstructure

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Yang, Y., Chen, Y. D., Hu, H. B., Tang, T. G., Long, R. R., & Zhang, Q. M. (2015). Microstructural evolution and thermal stability of 1050 commercial pure aluminum processed by high-strain-rate deformation. Journal of Materials Research, 30(22), 3502-3509. https://doi.org/10.1557/jmr.2015.341

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title = "Microstructural evolution and thermal stability of 1050 commercial pure aluminum processed by high-strain-rate deformation",

abstract = "Microstructural and property evolution of 1050 commercial pure aluminum subjected to high-strain-rate deformation (1.2-2.3 × 103 s-1) by split Hopkinson pressure bar (SHPB) and subsequent annealing treatment were investigated. The as-deformed and their annealed samples at 373-523 K were characterized by transmission electron microscopy (TEM) and microhardness tests. TEM observations reveal that the as-deformed sample is mainly composed of a lamellar structure, whose transverse/longitudinal average subgrain/cell sizes are 293 and 694 nm, respectively. The initial coarse grains are refined significantly. The initial lamellar grain structures are subdivided into pancake-shaped subgrains due to a gradual transition by triple junction motion at 473 K, and then a dramatic microstructural coarsening is observed at 523 K. It is suggested that annealing behavior of this dynamic loading structure is better considered as a continuous process of grain coarsening or continuous recovery.",

keywords = "annealing, hardness, microstructure",

author = "Yang Yang and Chen, {Ya Dong} and Hu, {Hai Bo} and Tang, {Tie Gang} and Long, {Ren Rong} and Zhang, {Qing Ming}",

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T1 - Microstructural evolution and thermal stability of 1050 commercial pure aluminum processed by high-strain-rate deformation

AU - Yang, Yang

AU - Chen, Ya Dong

AU - Hu, Hai Bo

AU - Tang, Tie Gang

AU - Long, Ren Rong

AU - Zhang, Qing Ming

PY - 2015/11/2

Y1 - 2015/11/2

N2 - Microstructural and property evolution of 1050 commercial pure aluminum subjected to high-strain-rate deformation (1.2-2.3 × 103 s-1) by split Hopkinson pressure bar (SHPB) and subsequent annealing treatment were investigated. The as-deformed and their annealed samples at 373-523 K were characterized by transmission electron microscopy (TEM) and microhardness tests. TEM observations reveal that the as-deformed sample is mainly composed of a lamellar structure, whose transverse/longitudinal average subgrain/cell sizes are 293 and 694 nm, respectively. The initial coarse grains are refined significantly. The initial lamellar grain structures are subdivided into pancake-shaped subgrains due to a gradual transition by triple junction motion at 473 K, and then a dramatic microstructural coarsening is observed at 523 K. It is suggested that annealing behavior of this dynamic loading structure is better considered as a continuous process of grain coarsening or continuous recovery.

AB - Microstructural and property evolution of 1050 commercial pure aluminum subjected to high-strain-rate deformation (1.2-2.3 × 103 s-1) by split Hopkinson pressure bar (SHPB) and subsequent annealing treatment were investigated. The as-deformed and their annealed samples at 373-523 K were characterized by transmission electron microscopy (TEM) and microhardness tests. TEM observations reveal that the as-deformed sample is mainly composed of a lamellar structure, whose transverse/longitudinal average subgrain/cell sizes are 293 and 694 nm, respectively. The initial coarse grains are refined significantly. The initial lamellar grain structures are subdivided into pancake-shaped subgrains due to a gradual transition by triple junction motion at 473 K, and then a dramatic microstructural coarsening is observed at 523 K. It is suggested that annealing behavior of this dynamic loading structure is better considered as a continuous process of grain coarsening or continuous recovery.

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KW - microstructure

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ER -

Microstructural evolution and thermal stability of 1050 commercial pure aluminum processed by high-strain-rate deformation

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Keywords

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