Retarding of Precipitation Hardening of Al-Cu Alloy by Cadimium Addition

The aim of the present work is to prepare a set of Al-Cu alloys with slow precipitation hardening by aging. Present work results can be utilized during the importing or exporting of such alloys at solution treatment conditions. In order to establish this aim, a set of Al-4%Cu alloys have been prepar...

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Main Authors: Sabreen Ali, Alaa A. Atiyah, Amin D. Thamir
Format: Article
Language:English
Published: Unviversity of Technology- Iraq 2013-09-01
Series:Engineering and Technology Journal
Subjects:
Online Access:https://etj.uotechnology.edu.iq/article_83384_c88ae142146ac550df4afbab1b7b1c98.pdf
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author Sabreen Ali
Alaa A. Atiyah
Amin D. Thamir
author_facet Sabreen Ali
Alaa A. Atiyah
Amin D. Thamir
author_sort Sabreen Ali
collection DOAJ
description The aim of the present work is to prepare a set of Al-Cu alloys with slow precipitation hardening by aging. Present work results can be utilized during the importing or exporting of such alloys at solution treatment conditions. In order to establish this aim, a set of Al-4%Cu alloys have been prepared in the laboratory to investigate the effect of Cd-addition with the percentage varied from (0.1, 0.3 and 0.5) weight percentage. The prepared alloys with different Cd additions were subjected to a natural aging up to 60 days after solution treatment. As a result, the alloys showed an obvious retarding in the aging kinetics as the percentage of Cdadditions increasing. This retarding was found to be due to the trapping of the vacancies that resulted during the quenching step that resulted in delays of Gunier- Preston zones precipitation. SEM has been used in monitoring of microstructure as well as optical microscopy
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spelling doaj.art-2276847e39e240779a144c7ec78959b22024-02-04T17:36:20ZengUnviversity of Technology- IraqEngineering and Technology Journal1681-69002412-07582013-09-0131162997300610.30684/etj.31.16A.183384Retarding of Precipitation Hardening of Al-Cu Alloy by Cadimium AdditionSabreen AliAlaa A. AtiyahAmin D. ThamirThe aim of the present work is to prepare a set of Al-Cu alloys with slow precipitation hardening by aging. Present work results can be utilized during the importing or exporting of such alloys at solution treatment conditions. In order to establish this aim, a set of Al-4%Cu alloys have been prepared in the laboratory to investigate the effect of Cd-addition with the percentage varied from (0.1, 0.3 and 0.5) weight percentage. The prepared alloys with different Cd additions were subjected to a natural aging up to 60 days after solution treatment. As a result, the alloys showed an obvious retarding in the aging kinetics as the percentage of Cdadditions increasing. This retarding was found to be due to the trapping of the vacancies that resulted during the quenching step that resulted in delays of Gunier- Preston zones precipitation. SEM has been used in monitoring of microstructure as well as optical microscopyhttps://etj.uotechnology.edu.iq/article_83384_c88ae142146ac550df4afbab1b7b1c98.pdfprecipitation hardening retardingcd alloyvacancies trapping
spellingShingle Sabreen Ali
Alaa A. Atiyah
Amin D. Thamir
Retarding of Precipitation Hardening of Al-Cu Alloy by Cadimium Addition
Engineering and Technology Journal
precipitation hardening retarding
cd alloy
vacancies trapping
title Retarding of Precipitation Hardening of Al-Cu Alloy by Cadimium Addition
title_full Retarding of Precipitation Hardening of Al-Cu Alloy by Cadimium Addition
title_fullStr Retarding of Precipitation Hardening of Al-Cu Alloy by Cadimium Addition
title_full_unstemmed Retarding of Precipitation Hardening of Al-Cu Alloy by Cadimium Addition
title_short Retarding of Precipitation Hardening of Al-Cu Alloy by Cadimium Addition
title_sort retarding of precipitation hardening of al cu alloy by cadimium addition
topic precipitation hardening retarding
cd alloy
vacancies trapping
url https://etj.uotechnology.edu.iq/article_83384_c88ae142146ac550df4afbab1b7b1c98.pdf
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