High-strength light Al-Mg-Zn alloy
An al-mg-zn, lightweight technology, applied in the field of light Al-Mg-Zn alloy, high strength, can solve the problems of small reduction in alloy density, low alloy tensile strength, etc.
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[0027] The present invention will be described in detail below in conjunction with specific examples, but not limited to the examples.
[0028] The weight percentage of the alloy chemical composition in Examples 1-30 (Table 1, 2) is controlled as: Mg=6.0-10.0%; Zn=3.0-5.0%; Cu<2.0%; Mn<1.2%; Fe<0.3%; <0.3%.
[0029] When Mn=0~0.3%, add at least one of Cr and Ti; add at least one of Zr, Sc, Hf; Cr, Ti, Zr, Sc, Hf single element addition <0.5%; Cr , Ti compound addition amount<0.6%; Zr, Sc, Hf compound addition amount<0.6% (such as: add Cr, Ti, Zr and Sc, wherein Cr, Ti, Zr or Sc<0.5%, Cr+Ti<0.6% , Zr+Sc<0.6%; another example: add Cr, Ti, Zr, Sc and Hf, wherein Cr, Ti, Zr, Sc or Hf<0.5%, Zr+Sc+Hf<0.6%).
[0030] When 0.3
[0031] When Mn=0.6~1.2%, add at l...
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