Aging kinetics of friction stir welded Al-Cu-Li-Mg-Ag and Al-Cu-Li-Mg alloys
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- 作者：Harpreet Sidhar ; Rajiv S. Mishra ; Rajiv.Mishra@unt.edu" class="auth_mail" title="E-mail the corresponding author
- 关键词：Friction stir welding ; Al-Cu-Li alloys ; Differential scanning calorimetry ; Transmission electron microscopy ; Aging kinetics
- 刊名：Materials & Design
- 出版年：2016
- 出版时间：15 November 2016
- 年：2016
- 卷：110
- 期：Complete
- 页码：60-71
- 全文大小：3301 K
文摘
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Underwater friction stir welding reduced the strength loss in heat affected zone and thermo-mechanically affected zone.
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Low dislocation density was responsible for the delayed aging kinetics in case of alloy 2195.
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Low dislocation density and absence of Ag was responsible for the extremely sluggish aging kinetics in case of alloy 2199.
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Partial dissolution of T1 precipitates was responsible for the low strength in heat affected zone (HAZ) of 2195.
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Full dissolution of Al3Li and partial dissolution of T1 phase were responsible for reduction in strength in HAZ of 2199.