| 新型Al-Zn-Mg-Cu合金双级时效制度研究 |
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| 引用本文： | 冯朝辉,王少华,臧金鑫,张显峰,孙刚,陆政,龚彭.新型Al-Zn-Mg-Cu合金双级时效制度研究[J].航空材料学报,2012,32(2):32-37. |
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| 作者姓名： | 冯朝辉 王少华 臧金鑫 张显峰 孙刚 陆政 龚彭 |
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| 作者单位： | 北京航空材料研究院,北京,100095 |
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| 摘 要： | 采用硬度法测定了一种新型Al-Zn-Mg-Cu合金挤压带板的GP区临界形核温度TV（GP区在此温度下形核不依靠空位浓度）和TC（GP区在此温度以上不能形核）。他们的温度区间分别为130～140℃和170～180℃。依据实验结果确定了合金的一级时效温度为120℃,二级时效温度为165℃。合金在120℃/4h+165℃/8h制度下热处理后,L向的抗拉强度、屈服强度、伸长率、断裂韧度和电导率分别为617MPa,590MPa,13.5%,41.6MPa m1/2和39.1%IACS,是一种综合性能优良的双级时效600MPa级铝合金。
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| 关 键 词： | Al-Zn-Mg-Cu合金 双级时效 显微组织 性能 沉淀相 |
Investigation of Two-Step Aging Treatment of New Type Al-Zn-Mg-Cu Alloy |
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| FENG Zhao-hui
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WANG Shao-hua
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ZANG Jin-xin
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ZHANG Xian-feng
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SUN Gang
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LU Zheng
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GONG Peng.Investigation of Two-Step Aging Treatment of New Type Al-Zn-Mg-Cu Alloy[J].Journal of Aeronautical Materials,2012,32(2):32-37. |
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| Authors: | FENG Zhao-hui WANG Shao-hua ZANG Jin-xin ZHANG Xian-feng SUN Gang LU Zheng GONG Peng |
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| Institution: | (Beijing Institute of Aeronautical Materials,Beijing 100095,China) |
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| Abstract: | TV（In GP zones,the nucleation below this temperature is not relying on vacancy content.）,and TC（In GP zones,the nucleation is unable to be formed above this temperature.） of a new type Al-Zn-Mg-Cu alloy extruding plate were determined by hardness test.The results indicate that TV is between 130℃ and 140℃ and TC is about 170-180℃.Using these data,the first aging temperature of 120℃ and the second aging temperature of 165℃ were selected.After aging at 120℃/4h+ 165℃/8h,the tensile strength,yield strength,elongation,fracture toughness and electrical conductivity in the longitudinal direction of the alloy is 617MPa,590MPa,13.5%,41.6MPa m1/2 and 39.1%IACS respectively.The alloy is a Al alloy of 600MPa level strength with good combination property after two-step aging treatment. |
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| Keywords: | Al-Zn-Mg-Cu alloy two-step aging microstructure properties precipitate |
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