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The role of direct chilling, retrogression and reaging treatment on mechanical properties of high strength aluminum alloy

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Main Authors: Naeem, Haider T., Kahtan Sadiq, Muhammed, Dr, Khairel Rafezi, Ahmad, Dr., Azmi, Rahmat, Prof.
Other Authors: haider_neem@yahoo.com
Format: Article
Language:English
Published: Trans Tech Publications 2014
Subjects:
Aluminum alloys 7XXX
Direct chill casting
Mechanical properties
Microstructure
Re-aging
Retrogression
Online Access:http://dspace.unimap.edu.my:80/dspace/handle/123456789/34770
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spelling my.unimap-347702014-05-26T11:13:55Z The role of direct chilling, retrogression and reaging treatment on mechanical properties of high strength aluminum alloy Naeem, Haider T. Kahtan Sadiq, Muhammed, Dr Khairel Rafezi, Ahmad, Dr. Azmi, Rahmat, Prof. haider_neem@yahoo.com kahtan@unimap.edu.my rafezi@unimap.edu.my azmirahmat@unimap.edu.my Aluminum alloys 7XXX Direct chill casting Mechanical properties Microstructure Re-aging Retrogression Link to publisher's homepage at http://www.ttp.net/ The effect of retrogression and reaging heat treatment on microstructure evolution andmechanical properties of 7075 Al alloy in direct chilling casting process was investigated. The subsequent heat treatment process comprised pre-aging at 120°C for 24 h, retrogression at 180°C for 30 min, and then reaging at 120°C for 24 h. By this three-step process, the mechanical properties of the chilled casted samples were substantially improved. The samples retain their high strength at T6 level. They gave yield strength up to 290 MPa, ultimate tensile strength of 386 MPa and elongation of 5.9%. The average value of multiple Vickers hardness tests results were in the range of 210 Hv. The direct chilling process followed by retrogression and reaging heat treatment yielded casts of fine and uniform microstructure as opposed to the microstructure of samples casted by the conventional process. 2014-05-26T11:13:55Z 2014-05-26T11:13:55Z 2013-03 Article Advanced Materials Research, vol. 795, 2013, pages 211-218 978-303785811-0 1022-6680 http://www.scientific.net/AMR.795.211 http://dspace.unimap.edu.my:80/dspace/handle/123456789/34770 10.4028/www.scientific.net/AMR.795.211 en Trans Tech Publications
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Aluminum alloys 7XXX
Direct chill casting
Mechanical properties
Microstructure
Re-aging
Retrogression
spellingShingle Aluminum alloys 7XXX
Direct chill casting
Mechanical properties
Microstructure
Re-aging
Retrogression
Naeem, Haider T.
Kahtan Sadiq, Muhammed, Dr
Khairel Rafezi, Ahmad, Dr.
Azmi, Rahmat, Prof.
The role of direct chilling, retrogression and reaging treatment on mechanical properties of high strength aluminum alloy
description Link to publisher's homepage at http://www.ttp.net/
author2 haider_neem@yahoo.com
author_facet haider_neem@yahoo.com
Naeem, Haider T.
Kahtan Sadiq, Muhammed, Dr
Khairel Rafezi, Ahmad, Dr.
Azmi, Rahmat, Prof.
format Article
author Naeem, Haider T.
Kahtan Sadiq, Muhammed, Dr
Khairel Rafezi, Ahmad, Dr.
Azmi, Rahmat, Prof.
author_sort Naeem, Haider T.
title The role of direct chilling, retrogression and reaging treatment on mechanical properties of high strength aluminum alloy
title_short The role of direct chilling, retrogression and reaging treatment on mechanical properties of high strength aluminum alloy
title_full The role of direct chilling, retrogression and reaging treatment on mechanical properties of high strength aluminum alloy
title_fullStr The role of direct chilling, retrogression and reaging treatment on mechanical properties of high strength aluminum alloy
title_full_unstemmed The role of direct chilling, retrogression and reaging treatment on mechanical properties of high strength aluminum alloy
title_sort role of direct chilling, retrogression and reaging treatment on mechanical properties of high strength aluminum alloy
publisher Trans Tech Publications
publishDate 2014
url http://dspace.unimap.edu.my:80/dspace/handle/123456789/34770
_version_ 1643797586034819072
score 13.222552

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