Please use this identifier to cite or link to this item:
http://bura.brunel.ac.uk/handle/2438/10398
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yang, W | - |
dc.contributor.author | Ji, S | - |
dc.contributor.author | Wang, M | - |
dc.contributor.author | Li, Z | - |
dc.date.accessioned | 2015-03-11T15:55:21Z | - |
dc.date.available | 2014-10-15 | - |
dc.date.available | 2015-03-11T15:55:21Z | - |
dc.date.issued | 2014 | - |
dc.identifier.citation | Journal of Alloys and Compounds, 610: 623 - 629, (October 2014) | en_US |
dc.identifier.issn | 0925-8388 | - |
dc.identifier.uri | http://www.sciencedirect.com/science/article/pii/S0925838814011360 | - |
dc.identifier.uri | http://bura.brunel.ac.uk/handle/2438/10398 | - |
dc.description.abstract | Age hardening at 160 °C was performed in an Al-6.0 wt.%Zn-2.3 wt.%Mg-1.8 wt.%Cu-0.1 wt.%Zr alloy. It was found that metastable η′ phases played a very important role in controlling this behaviour. The alloy reached the 193 HV peak hardness aged for 6 h. Transmission electron microscopy was used to characterise the morphology of η′ phases as main strengthening precipitates, and then the high-resolution transmission electron microscopy, combining with Transition Matrix calculation, was used to analysis the orientations and electron diffraction patterns of η′ precipitates. It was found that the η′ phases in four variants had only three different zone axis: [24̄23]η′, [101̄0] η′ and [2̄42̄3]η′, parallel to the [1 1 0]Al direction of Al matrix when they were precipitated. By integrating the atomic coordinates, structure factors and double diffraction effect, a new diffraction patterns model under the [1 1 0]Al zone axis was established, which was good in agreement with the experimental result. Simultaneously, Moiré fringes analytical technique was also used to quantitatively verify the lattice parameters and orientation variants of η′ precipitates, and demonstrated that Moiré fringes with about 0.7 nm spacing were the results of the interaction between the 0004 η′/0004̄η′ diffraction of η′ precipitates in variants 3/4 under the [101̄0] η′ zone axis and the 11̄1Al/11̄1 ̄Al of Al matrix under the [1 1 0]Al zone axis. Furthermore, the high-resolution transmission electron microscopy image simulation for Moiré fringes of η′ precipitates in the Al matrix presented a good match with the experimental result. © 2014 Elsevier B.V. All rights reserved. | en_US |
dc.description.sponsorship | This work is supported by the Hunan Provincial Innovation Foundation for Postgraduate (CX2010B044), PR China, and the Graduate Degree Thesis Innovation Foundation of Central South University (2010ybfz024), China. | en_US |
dc.format.extent | 623 - 629 | - |
dc.format.extent | 623 - 629 | - |
dc.language | eng | - |
dc.language.iso | en | en_US |
dc.publisher | Elsevier Ltd | en_US |
dc.subject | Ageing | en_US |
dc.subject | Aluminium alloys | en_US |
dc.subject | Electron diffraction | en_US |
dc.subject | High-resolution transmission electron microscopy (HRTEM) | en_US |
dc.subject | η′ Precipitates | en_US |
dc.title | Precipitation behaviour of Al-Zn-Mg-Cu alloy and diffraction analysis from η′ precipitates in four variants | en_US |
dc.type | Article | en_US |
dc.identifier.doi | http://dx.doi.org/10.1016/j.jallcom.2014.05.061 | - |
dc.relation.isPartOf | Journal of Alloys and Compounds | - |
dc.relation.isPartOf | Journal of Alloys and Compounds | - |
pubs.volume | 610 | - |
pubs.volume | 610 | - |
pubs.organisational-data | /Brunel | - |
pubs.organisational-data | /Brunel/Brunel Staff by College/Department/Division | - |
pubs.organisational-data | /Brunel/Brunel Staff by College/Department/Division/College of Engineering, Design and Physical Sciences | - |
pubs.organisational-data | /Brunel/Brunel Staff by College/Department/Division/College of Engineering, Design and Physical Sciences/Dept of Mechanical, Aerospace and Civil Engineering | - |
pubs.organisational-data | /Brunel/Brunel Staff by College/Department/Division/College of Engineering, Design and Physical Sciences/Dept of Mechanical, Aerospace and Civil Engineering/Mechanical and Aerospace Engineering | - |
pubs.organisational-data | /Brunel/Brunel Staff by Institute/Theme | - |
pubs.organisational-data | /Brunel/Brunel Staff by Institute/Theme/Institute of Materials and Manufacturing | - |
pubs.organisational-data | /Brunel/Brunel Staff by Institute/Theme/Institute of Materials and Manufacturing/Liquid Metal Engineering | - |
pubs.organisational-data | /Brunel/Specialist Centres | - |
pubs.organisational-data | /Brunel/Specialist Centres/BCAST | - |
Appears in Collections: | Brunel Centre for Advanced Solidification Technology (BCAST) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Fulltext.pdf | 2.6 MB | Adobe PDF | View/Open |
Items in BURA are protected by copyright, with all rights reserved, unless otherwise indicated.