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一、引言高强度Al-Zn-Mg-Cu系合金是航空工业重要的结构材料,航空工业的迅速发展,要求研制具有良好综合性能的合金,除了它的强度和抗应力腐蚀性能外,还必须有优异的耐疲劳性
I. INTRODUCTION High-strength Al-Zn-Mg-Cu alloy is an important structural material in the aviation industry. The rapid development of the aviation industry requires the development of an alloy with good comprehensive properties. In addition to its strength and stress corrosion resistance, Excellent fatigue resistance