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Title: Stability of the grain structure in 2219-O aluminum alloy friction stir welds during solution treatment

Abstract

The stability of the grain structure in 2219-O aluminum alloy friction stir welds during solution treatment has been investigated. Experimental results show that the solution treatment causes drastic grain growth, Grain growth initiates at the surface and the bottom of the weld and then extends to the weld centre within several minutes. The solution treatment temperature and the welding heat input have a significant effect on grain growth. The higher the solution temperature, or the higher the welding heat input, the greater the grain growth. The instability of the grains is attributed to an imbalance between thermodynamic driving forces for grain growth and the pinning forces impeding grain boundary migration during solution treatment.

Authors:
 [1];  [2];  [2]
  1. National Key Laboratory of Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin 150001 (China) and National Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001 (China). E-mail: armstrong@hit.edu.cn
  2. National Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001 (China)
Publication Date:
OSTI Identifier:
21003531
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Characterization; Journal Volume: 58; Journal Issue: 2; Other Information: DOI: 10.1016/j.matchar.2006.04.015; PII: S1044-5803(06)00114-8; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM ALLOYS; FRICTION; GRAIN BOUNDARIES; GRAIN GROWTH; HEAT; INSTABILITY; MAGNETIC FLUX; STABILITY; WELDED JOINTS; WELDING

Citation Formats

Chen, Y.C., Feng, J.C., and Liu, H.J.. Stability of the grain structure in 2219-O aluminum alloy friction stir welds during solution treatment. United States: N. p., 2007. Web. doi:10.1016/j.matchar.2006.04.015.
Chen, Y.C., Feng, J.C., & Liu, H.J.. Stability of the grain structure in 2219-O aluminum alloy friction stir welds during solution treatment. United States. doi:10.1016/j.matchar.2006.04.015.
Chen, Y.C., Feng, J.C., and Liu, H.J.. Thu . "Stability of the grain structure in 2219-O aluminum alloy friction stir welds during solution treatment". United States. doi:10.1016/j.matchar.2006.04.015.
@article{osti_21003531,
title = {Stability of the grain structure in 2219-O aluminum alloy friction stir welds during solution treatment},
author = {Chen, Y.C. and Feng, J.C. and Liu, H.J.},
abstractNote = {The stability of the grain structure in 2219-O aluminum alloy friction stir welds during solution treatment has been investigated. Experimental results show that the solution treatment causes drastic grain growth, Grain growth initiates at the surface and the bottom of the weld and then extends to the weld centre within several minutes. The solution treatment temperature and the welding heat input have a significant effect on grain growth. The higher the solution temperature, or the higher the welding heat input, the greater the grain growth. The instability of the grains is attributed to an imbalance between thermodynamic driving forces for grain growth and the pinning forces impeding grain boundary migration during solution treatment.},
doi = {10.1016/j.matchar.2006.04.015},
journal = {Materials Characterization},
number = 2,
volume = 58,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}