Open AccessSmall angle x-ray scattering study on microstructure and mechanical property evo lutions of equal-channel angular pressed 7050 Al alloy
Author(s) -
Lijing Zheng,
Shusuo Li,
Huanxi Li,
Chen Changqi,
Han Yan,
Dong Bao-Zhong
Publication year - 2005
Publication title -
wuli xuebao
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.