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Small angle X-ray scattering study in equal-channel angular pressed 7055 Al alloys

  • L. J. Zheng*
  • , G. Q. Li
  • , H. X. Li
  • , C. Q. Chen
  • , B. Z. Dong
  • *此作品的通讯作者
  • Beihang University
  • CAS - Institute of High Energy Physics

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

A study was conducted on 7055 Al alloys processed by Equal-channel Angular Pressing (ECAP). The quantitative information about precipitate size, distribution and volume fraction in ECAPed samples was investigated by small-angle X-ray scattering (SAXS) and transmission electron microscopy (TEM). It is found that with the number of ECAP increasing, the quantitative information about volume fraction (fv), precipitate size (R), specific inner surface of particle-matrix (Sp), and integrated intensity (Qo) all increased, indicating that ECAP enhanced the nucleation and growth of precipitates. The microhardness of samples after two passes of ECAP is higher than that of T6 treated samples even after 96 h at 120°C. The formation of fine grains, higher volume fraction of precipitates, together with strain hardening induced by severe deformation are the main factors leading to a high microhardness in ECAPed samples.

源语言英语
主期刊名Progress in Light Metals, Aerospace Materials and Superconductors
出版商Trans Tech Publications Ltd
839-844
页数6
版本PART 2
ISBN(印刷版)0878494324, 9780878494323
DOI
出版状态已出版 - 2007
活动2006 Beijing International Materials Week, 2006 BIMW - 2006 Beijing International Conference on Aluminum Materials, BICAM 2006 - Beijing, 中国
期限: 25 6月 200630 6月 2006

出版系列

姓名Materials Science Forum
编号PART 2
546-549
ISSN(印刷版)0255-5476
ISSN(电子版)1662-9752

会议

会议2006 Beijing International Materials Week, 2006 BIMW - 2006 Beijing International Conference on Aluminum Materials, BICAM 2006
国家/地区中国
Beijing
时期25/06/0630/06/06

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