Small angle x-ray scattering study on microstructure and mechanical property evo lutions of equal-channel angular pressed 7050 Al alloy | Zendy

Zheng Lijing | Zendy; Shusuo Li | Zendy; Huanxi Li | Zendy; Changqi Chen | Zendy; Han Yafang | Zendy; Dong Bao-Zhong | Zendy

Open Access

Small angle x-ray scattering study on microstructure and mechanical property evo lutions of equal-channel angular pressed 7050 Al alloy

Author(s) -

Zheng Lijing,

Shusuo Li,

Huanxi Li,

Changqi Chen,

Han Yafang,

Dong Bao-Zhong

Publication year - 2005

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.54.1665

Subject(s) - materials science , microstructure , ultimate tensile strength , alloy , pressing , elongation , scattering , composite material , metallurgy , optics , physics

Three processes which combined equal_channel angular pressing (ECAP) with heat t reatment were applied to fabricate super_high strength fine 7050 Al alloy. Varia tions of microstructure parameters of precipitates in 7050 Al alloys were analyz ed by using small angle x_ray scattering technique. The variations of mechanical properties and mechanism of strengthening in 7050 Al alloys were explained in the paper. Experiments discovered that “pre_ECAP solid solution treatment and post_ECAP aging treatment" was a proper process, with which the ultimate tensile strength was increased to 677MPa, and elongation to failure was improved to b e 15% or so.

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