[Kovove materialy - Metallic materials]
    Mon - April 22, 2024 - 04:16 No. of hits : 1743011 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 57 (2019), Issue 1

Micro-nano structure and characterization in the nugget zone of Al-Cu-Mg alloy under friction stir processing
SIYU SUN, PENG LIU, LANWEN CHEN, MEIQING CAO, JIAYING HU, SIYU LIU, XUE QIAO, JUNHAO SUN
vol. 57 (2019), no. 1, pp. 27 - 31
DOI: 10.4149/km_2019_1_27

Abstract
In this paper, the microstructure in the nugget zone of a friction-stir-processed Al-Cu-Mg alloy was analysed. There are the irregular bulk precipitates and micro-voids in the Al-Cu-Mg alloys. These precipitates were the compounds of Al-Cu system, and the size is less than 1 µm. In a local area, the homogeneous amorphous structure of Al-Cu system in some area of the nugget zone was also detected. The amorphous structure with a halo pattern has a structure characteristic of the long-range disorder. The formation of micro-nano and amorphous structure in the nugget zone could be attributed to the severe plastic deformation, breaking effect of stir tool, higher temperature gradient, hydrostatic pressure and shear stress and strain.

Key words
friction stir processing, aluminium alloys, microstructure, micro-nano structure, electron microscopy

[open article.pdf] Full text (663 KB)

[IMMS SAS]      UMMS SAV - Bratislava (SK) Personal data Protection   ver. 1.8.0      [go to HOME PAGE]
Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.


Article abstracts updated: 2023-10-26 07:45      
Articles in press revised: 2024-04-11 09:16     
Full text pdf uploaded: 2023-11-08 06:53    
Information updated: 2023-04-19 16:14   
Code last revised: 2024-03-06 11:13  

© OldSoft, 2004, …, 2024