Small angle X-ray scattering study of precipitation kinetics in Al-Zn-Mg-Cu alloys
Du, ZW; Zhou, TT; Liu, PY; Li, HX; Dong, BZ; Chen, CQ; Dong BZ(董宝中)
刊名JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
2005
卷号21期号:4页码:479-483
关键词small angle X-ray scattering (SAXS) Al-Zn-Mg-Cu alloys ageing precipitate size volume fraction
学科分类Materials Science; Metallurgy & Metallurgical Engineering
通讯作者Beihang Univ, Sch Mat Sci & Engn, Beijing 100083, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil Div, Beijing 100039, Peoples R China
文章类型Article
英文摘要The evolution of microstructure parameters (precipitate size and volume fraction) for two types of Al-Zn-Mg-Cu alloys (7075 and 7055) during aging has been studied by synchrotron-radiation small angle X-ray scattering (SAXS). The results show that the precipitates are only a few nanometers for both alloys ageing even at higher temperature of 160 degrees C for 72 h (4.44 and 5.82 nm, respectively). The maximum of the precipitate volume fraction increases with in creasing Zn content and is about 0.023 similar to 0.028 and 0.052 similar to 0.054, respectively. The coarsening of precipitate is consistent with LSW (Lifshitz-Slyozov-Wagner) model even at the initial stage where volume fraction is still varying. The activation energy of coarsening regime has been determined to be about 1.22 +/- 0.02 eV and 1.25 +/- 0.02 eV for alloys 7075 and 7055, respectively.
类目[WOS]Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
研究领域[WOS]Materials Science ; Metallurgy & Metallurgical Engineering
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语种英语
WOS记录号WOS:000230978600010
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被引频次:11[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237659
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
作者单位中国科学院高能物理研究所
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GB/T 7714
Du, ZW,Zhou, TT,Liu, PY,et al. Small angle X-ray scattering study of precipitation kinetics in Al-Zn-Mg-Cu alloys[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2005,21(4):479-483.
APA Du, ZW.,Zhou, TT.,Liu, PY.,Li, HX.,Dong, BZ.,...&董宝中.(2005).Small angle X-ray scattering study of precipitation kinetics in Al-Zn-Mg-Cu alloys.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,21(4),479-483.
MLA Du, ZW,et al."Small angle X-ray scattering study of precipitation kinetics in Al-Zn-Mg-Cu alloys".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 21.4(2005):479-483.
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