The possible transition mechanism for the meta-stable phase in the 7xxx aluminium

被引：13

作者：

Bendo, Artenis ^{[1
]}

Matsuda, Kenji ^{[1
]}

Nishimura, Katsuhiko ^{[1
]}

Nunomura, Norio ^{[1
]}

Tsuchiya, Taiki ^{[1
]}

Lee, Seungwon ^{[1
]}

Marioara, Calin D. ^{[2
]}

Tsuru, Tomohito ^{[3
]}

Yamaguchi, Masatake ^{[3
]}

Shimizu, Kazuyuki ^{[4
]}

Toda, Hiroyuki ^{[5
]}

机构：

[1] Univ Toyama, Grad Sch Sci & Engn, Gofu Ku, Toyama, Japan

[2] SINTEF Ind, Mat & Nanotechnol, Trondheim, Norway

[3] Japan Atom Energy Agcy, Tokai, Ibaraki, Japan

[4] Iwate Univ, Dept Mat Sci & Engn, Morioka, Iwate, Japan

[5] Kyushu Univ, Dept Mech Engn, Fukuoka, Japan

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2020年 / 36卷 / 15期

基金：

日本科学技术振兴机构;

关键词：

Aluminum alloy; Al-Zn-Mg-Cu alloy; Ageing; Precipitation; Phase transformation; TEM; STEM; High resolution imaging; GP-ZONES; CRYSTAL-STRUCTURE; MG; PRECIPITATE; MICROSTRUCTURE; 1ST-PRINCIPLES;

D O I：

10.1080/02670836.2020.1821323

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Metastable phases in aluminium alloys are the primary nano-scale precipitates which have the biggest contribution to the increase in the tangible mechanical properties. The continuous increase in hardness in the 7xxx aluminium alloys is associated with the phase transformation from clusters or GP-zones to the metastable eta ' phase. The high-resolution electron imaging is used to observe the precipitates and reconstruct a kinetic model that might explain the transformation. This work is an attempt to gain insight into how the structural transformation may occur based on the shortest route of diffusion for the eventual structure to result in that of the eta ' phase.

引用

页码：1621 / 1627

页数：7

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