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许晓静,朱金鑫,郭云飞.固溶-冷变形-时效工艺下超高强铝合金Al-13.01Zn-3.16Mg-2.8Cu-0.204Zr-0.0757Sr组织及性能研究[J].稀有金属材料与工程(英文),2017,46(10):2981~2986.[xuxiaojing,zhujinxin and guoyunfei.The research of solution-cold deformation-aging to ultra-high strength aluminum alloy Al - 13.01Zn - 3.16Mg - 2.8Cu - 0.204Zr - 0.0757Sr affected tissue and properties[J].Rare Metal Materials and Engineering,2017,46(10):2981~2986.]
The research of solution-cold deformation-aging to ultra-high strength aluminum alloy Al - 13.01Zn - 3.16Mg - 2.8Cu - 0.204Zr - 0.0757Sr affected tissue and properties
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Received:June 25, 2015  Revised:August 31, 2016
DOI:
Key words: Al-Zn-Mg-Cu ultra-high strength aluminum alloy, compression, microstructure - property
Foundation item:江苏省科技支撑计划项目,江苏省高校科研成果产业化推进项目
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xuxiaojing,zhujinxin and guoyunfei  
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Abstract:
      The effects of cold deformation treatment on solution microstructures and properties of a new designed Al-13.01Zn-3.16Mg-2.8Cu-0.204Zr-0.0757Sr alloy extrusions were investigated by tensile, hardness tests, XRD and EBSD analysis, inter-granular and exfoliation corrosion resistance experiments. The results show that compared to the traditional solution - aging, The average grain size decreases, the hardness, conductivity, low-angle grain boundaries ratio, tensile and yield strength increases, and corrosion resistance becomes better of the alloy under solution-compression-aging. Wherein the hardness, conductivity, yield, tensile strength reached 243.0 HV, 25.085% IACS, 734.7 MPa and 683.2 MPa, elongation of 6.1% and intergranular corrosion depth of 23.81 um, intergranular corrosion rate 2 of the alloy under the solution- compression - aging (100 ℃×24 h).
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