Investigation of nickel aluminium bronze castings properties by degassing agent technique

Nickel Aluminium Bronze (NAB) is an excellent engineering material for maritime application due to its selective mechanical properties and relatively excellent corrosion resistant. However, NAB is susceptible to porosities due to dissolved gasses absorbed during its casting processes and adversely a...

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Main Authors:	Kavinjr, ., Rashidi, M. M., Asnul Hadi, Ahmad
Format:	Conference or Workshop Item
Language:	English English
Published:	2019
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/24385/ http://umpir.ump.edu.my/id/eprint/24385/ http://umpir.ump.edu.my/id/eprint/24385/1/78.%20Investigation%20of%20nickel%20aluminum%20bronze%20casting%20properties.pdf http://umpir.ump.edu.my/id/eprint/24385/2/78.1%20Investigation%20of%20nickel%20aluminum%20bronze%20casting%20properties.pdf

id	ump-24385
recordtype	eprints
spelling	ump-243852019-11-28T06:37:27Z http://umpir.ump.edu.my/id/eprint/24385/ Investigation of nickel aluminium bronze castings properties by degassing agent technique Kavinjr, . Rashidi, M. M. Asnul Hadi, Ahmad TJ Mechanical engineering and machinery Nickel Aluminium Bronze (NAB) is an excellent engineering material for maritime application due to its selective mechanical properties and relatively excellent corrosion resistant. However, NAB is susceptible to porosities due to dissolved gasses absorbed during its casting processes and adversely affects the mechanical properties. So, a degassing agent is added to the melt of NAB before the pouring process to reduce the dissolved gasses. A few parameters were initiated to investigate the effect of the degassing agent. Firstly, the effect of the degassing agent on the solidification behavior of the NAB alloy is studied using thermal analysis. Cooling curves can provide information on liquidus, eutectic, undercooling, recalescence and solidus temperature of the NAB alloy. Secondly, Differential thermal analysis (DTA) technique is employed to determine this thermal arrest temperature of NAB alloy from the cooling curves. The increasing in degassing agent addition will increase the average cooling rate of the NAB during solidification process but also slightly increasing the recalescence effect at the same time. It is discovered the higher cooling rate will reduce the dendritic growth and lead to better mechanical properties. Higher degassing addition also produced a smaller dendritic structure which promotes the higher mechanical strength. It has been proven through the tensile test, hardness test and microstructure analysis using FESEM. The relationship between, DAS average length, SDAS average length, tensile stress and hardness have been studied. 2019-01 Conference or Workshop Item PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/24385/1/78.%20Investigation%20of%20nickel%20aluminum%20bronze%20casting%20properties.pdf pdf en http://umpir.ump.edu.my/id/eprint/24385/2/78.1%20Investigation%20of%20nickel%20aluminum%20bronze%20casting%20properties.pdf Kavinjr, . and Rashidi, M. M. and Asnul Hadi, Ahmad (2019) Investigation of nickel aluminium bronze castings properties by degassing agent technique. In: 1st International Postgraduate Conferenceon Mechanical Engineering 2018, 31 Oktober 2018 , Universiti Malaysia Pahang, Pekan. pp. 1-11., 469 (1). ISSN 1757-8981 (Print); 1757-899X (Online) (In Press) https://iopscience.iop.org/article/10.1088/1757-899X/469/1/012037/pdf
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Kavinjr, . Rashidi, M. M. Asnul Hadi, Ahmad Investigation of nickel aluminium bronze castings properties by degassing agent technique
description	Nickel Aluminium Bronze (NAB) is an excellent engineering material for maritime application due to its selective mechanical properties and relatively excellent corrosion resistant. However, NAB is susceptible to porosities due to dissolved gasses absorbed during its casting processes and adversely affects the mechanical properties. So, a degassing agent is added to the melt of NAB before the pouring process to reduce the dissolved gasses. A few parameters were initiated to investigate the effect of the degassing agent. Firstly, the effect of the degassing agent on the solidification behavior of the NAB alloy is studied using thermal analysis. Cooling curves can provide information on liquidus, eutectic, undercooling, recalescence and solidus temperature of the NAB alloy. Secondly, Differential thermal analysis (DTA) technique is employed to determine this thermal arrest temperature of NAB alloy from the cooling curves. The increasing in degassing agent addition will increase the average cooling rate of the NAB during solidification process but also slightly increasing the recalescence effect at the same time. It is discovered the higher cooling rate will reduce the dendritic growth and lead to better mechanical properties. Higher degassing addition also produced a smaller dendritic structure which promotes the higher mechanical strength. It has been proven through the tensile test, hardness test and microstructure analysis using FESEM. The relationship between, DAS average length, SDAS average length, tensile stress and hardness have been studied.
format	Conference or Workshop Item
author	Kavinjr, . Rashidi, M. M. Asnul Hadi, Ahmad
author_facet	Kavinjr, . Rashidi, M. M. Asnul Hadi, Ahmad
author_sort	Kavinjr, .
title	Investigation of nickel aluminium bronze castings properties by degassing agent technique
title_short	Investigation of nickel aluminium bronze castings properties by degassing agent technique
title_full	Investigation of nickel aluminium bronze castings properties by degassing agent technique
title_fullStr	Investigation of nickel aluminium bronze castings properties by degassing agent technique
title_full_unstemmed	Investigation of nickel aluminium bronze castings properties by degassing agent technique
title_sort	investigation of nickel aluminium bronze castings properties by degassing agent technique
publishDate	2019
url	http://umpir.ump.edu.my/id/eprint/24385/ http://umpir.ump.edu.my/id/eprint/24385/ http://umpir.ump.edu.my/id/eprint/24385/1/78.%20Investigation%20of%20nickel%20aluminum%20bronze%20casting%20properties.pdf http://umpir.ump.edu.my/id/eprint/24385/2/78.1%20Investigation%20of%20nickel%20aluminum%20bronze%20casting%20properties.pdf
first_indexed	2023-09-18T22:36:52Z
last_indexed	2023-09-18T22:36:52Z
_version_	1777416653685915648

Investigation of nickel aluminium bronze castings properties by degassing agent technique

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