Thermal analysis of aluminium 7075 prior to semisolid metal processing

Thermal analysis method is broadly used to determine solidification characteristics of metals and alloys in numerous metallurgical processes. This paper presents the relationship between fraction solid and temperature of wrought aluminium 7075 alloy at different cooling rate conditions. The 7075 was...

Full description

Bibliographic Details
Main Authors:	Nur Azhani, Abd Razak, Asnul Hadi, Ahmad, Mohd Rashidi, Maarof
Format:	Conference or Workshop Item
Language:	English
Published:	2018
Subjects:	TJ Mechanical engineering and machinery TS Manufactures
Online Access:	http://umpir.ump.edu.my/id/eprint/21309/ http://umpir.ump.edu.my/id/eprint/21309/1/31.1%20Thermal%20analysis%20of%20aluminium%207075%20prior%20to%20semisolid%20metal%20processing.pdf

id	ump-21309
recordtype	eprints
spelling	ump-213092018-06-11T05:49:31Z http://umpir.ump.edu.my/id/eprint/21309/ Thermal analysis of aluminium 7075 prior to semisolid metal processing Nur Azhani, Abd Razak Asnul Hadi, Ahmad Mohd Rashidi, Maarof TJ Mechanical engineering and machinery TS Manufactures Thermal analysis method is broadly used to determine solidification characteristics of metals and alloys in numerous metallurgical processes. This paper presents the relationship between fraction solid and temperature of wrought aluminium 7075 alloy at different cooling rate conditions. The 7075 was heated in a graphite crucible to a temperature of 750 °C by an induction heating machine. A K-type thermocouple was located at the center of the crucible and was immersed within the molten metal to a depth of 15 mm from the top of the graphite crucible. The temperature and time profiles were recorded with a Data Logger GL-220 which was connected to a notebook with GL software. Three different cooling rate conditions (normal, intermediate, and high) were carried out with the crucible was set in the open atmosphere, in open atmosphere with minimum airflow over the crucible, and in open atmosphere with maximum airflow over the crucible, respectively. Based on the obtained cooling curves data, the enthalpy of phase change at respective temperature was determined. Results show that the calculated cooling rates for normal, intermediate, and high cooling rates were at 2.23 °C/s, 2.88 °C/s, and 3.20 °C/s respectively. The variations of cooling rate were found directly related to phase transformation during solidification including at liquidus, eutectic and solidus temperatures. 2018 Conference or Workshop Item NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/21309/1/31.1%20Thermal%20analysis%20of%20aluminium%207075%20prior%20to%20semisolid%20metal%20processing.pdf Nur Azhani, Abd Razak and Asnul Hadi, Ahmad and Mohd Rashidi, Maarof (2018) Thermal analysis of aluminium 7075 prior to semisolid metal processing. In: The 4th International Conference On Green Design And Manufacture, 29 April - 30 April 2018 , Ho Chi Minh, Vietnam. p. 1.. (Unpublished)
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery TS Manufactures
spellingShingle	TJ Mechanical engineering and machinery TS Manufactures Nur Azhani, Abd Razak Asnul Hadi, Ahmad Mohd Rashidi, Maarof Thermal analysis of aluminium 7075 prior to semisolid metal processing
description	Thermal analysis method is broadly used to determine solidification characteristics of metals and alloys in numerous metallurgical processes. This paper presents the relationship between fraction solid and temperature of wrought aluminium 7075 alloy at different cooling rate conditions. The 7075 was heated in a graphite crucible to a temperature of 750 °C by an induction heating machine. A K-type thermocouple was located at the center of the crucible and was immersed within the molten metal to a depth of 15 mm from the top of the graphite crucible. The temperature and time profiles were recorded with a Data Logger GL-220 which was connected to a notebook with GL software. Three different cooling rate conditions (normal, intermediate, and high) were carried out with the crucible was set in the open atmosphere, in open atmosphere with minimum airflow over the crucible, and in open atmosphere with maximum airflow over the crucible, respectively. Based on the obtained cooling curves data, the enthalpy of phase change at respective temperature was determined. Results show that the calculated cooling rates for normal, intermediate, and high cooling rates were at 2.23 °C/s, 2.88 °C/s, and 3.20 °C/s respectively. The variations of cooling rate were found directly related to phase transformation during solidification including at liquidus, eutectic and solidus temperatures.
format	Conference or Workshop Item
author	Nur Azhani, Abd Razak Asnul Hadi, Ahmad Mohd Rashidi, Maarof
author_facet	Nur Azhani, Abd Razak Asnul Hadi, Ahmad Mohd Rashidi, Maarof
author_sort	Nur Azhani, Abd Razak
title	Thermal analysis of aluminium 7075 prior to semisolid metal processing
title_short	Thermal analysis of aluminium 7075 prior to semisolid metal processing
title_full	Thermal analysis of aluminium 7075 prior to semisolid metal processing
title_fullStr	Thermal analysis of aluminium 7075 prior to semisolid metal processing
title_full_unstemmed	Thermal analysis of aluminium 7075 prior to semisolid metal processing
title_sort	thermal analysis of aluminium 7075 prior to semisolid metal processing
publishDate	2018
url	http://umpir.ump.edu.my/id/eprint/21309/ http://umpir.ump.edu.my/id/eprint/21309/1/31.1%20Thermal%20analysis%20of%20aluminium%207075%20prior%20to%20semisolid%20metal%20processing.pdf
first_indexed	2023-09-18T22:31:12Z
last_indexed	2023-09-18T22:31:12Z
_version_	1777416297541271552

Thermal analysis of aluminium 7075 prior to semisolid metal processing

Similar Items