用SAXS研究1420合金时效-回归-再时效析出δ′相

用SAXS研究1420合金时效-回归-再时效析出δ′相

孟繁玲¹, 李永华², 刘常升¹, 徐跃³, 王煜明⁴

1. 东北大学材料与冶金学院, 沈阳 110004; 2. 哈尔滨工程大学理学院, 哈尔滨 150001; 3. 吉林大学测试科学实验中心, 长春 130021; 4. 吉林大学材料科学与工程学院, 长春 130012

收稿日期:2007-12-12 修回日期:1900-01-01 出版日期:2008-09-26 发布日期:2008-09-26
通讯作者: 李永华

SAXS Investigation the Precipitation of δ′ Phase in 1420 Alloy Treated by Aging-retrogression-reaging

MENG Fan ling¹, LI Yong hua², LIU Chang sheng¹, XU Yue³, WANG Yu ming⁴

1. School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China;2. School of Sciences, Harbin Engineering University, Harbin 150001, China;3. Test Science Experiment Center, Jilin University, Changchun 130021, China;4. College of Materials Science and Engineering, Jilin University, Changchun 130012, China

Received:2007-12-12 Revised:1900-01-01 Online:2008-09-26 Published:2008-09-26
Contact: LI Yong hua

摘要/Abstract

摘要： 应用小角X射线散射(SAXS)技术研究1420合金时效-回归-再时效析出δ′相的行为. 结果表明, 再时效处理5 h后析出的δ′相与基体间存在明显的过渡界面层, 再时效48 h后过渡界面层消失, 时效80 h和再时效80 h析出δ′相的回转半径分别为9.32 nm 和8.27 nm. 再时效过程中δ′相粒子的长大速度比回归前慢, 随着再时效时间的增加, 粒子非均匀长大. 

关键词: Al-Li合金, 时效-回归-再时效, 回转半径, 小角X射线散射

Abstract: Small-angle X-ray scattering (SAXS) was used to study the precipitation behavior of the δ′phase in 1420 alloy treated by aging-retrogressionreaging. The results show that the transition interfacial layer exists between the δ′ phase and the matrix after reaging for 5 h, but the transition interfacial layer disappears after reaging for 48 h. The gyration radius of the δ′ phase particles, R_G was 9.32 nm for aging 80 h and 8.27 nm for reaging 80 h, respectively. This suggests that the δ′ phase particles coarsen is much slower during reaging treatment compared with that of aging treatment. With the reaging time increase, the δ′ phase grain size is not the same. 

Key words: Al-Li alloy, aging-retrogression-reaging, radius of gyration, small-angle X-ray scattering

中图分类号:

TG113.12

孟繁玲, 李永华, 刘常升, 徐跃, 王煜明. 用SAXS研究1420合金时效-回归-再时效析出δ′相[J]. J4, 2008, 46(05): 971-973.

MENG Fan ling, LI Yong hua, LIU Chang sheng, XU Yue, WANG Yu ming. SAXS Investigation the Precipitation of δ′ Phase in 1420 Alloy Treated by Aging-retrogression-reaging[J]. J4, 2008, 46(05): 971-973.

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[2]	徐跃, 于文学, 郑伟涛, 赵竹第. 稀土对时效-回归-再时效处理的Al-Zn-Mg合金硬度和氢脆的影响[J]. J4, 2004, 42(04): 578-581.
[3]	徐跃, 柴志刚, 邹青, 李永华. 回归时间对Al-9.74%Li合金析出δ′相的影响[J]. J4, 2003, 41(01): 88-90.