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Effect of pore forming agent on phase transformation behavior of porous NiTi shape memory alloy

Porous NiTi shape memory alloy is of special interest for bioimplant materials due to its attractive features of NiTi dense structure such as low stiffness, high strength and excellent shape memory and pseudoelastic behavior. This porous NiTi can be produced via powder metallurgy technique using por...

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Main Authors: Mohd Zaki, Hafizah Hanim, Abd Kadir, Nur Amanina, Jamal, Nur Ayuni, Md. Abdul, Maleque, Mohd Daud, Farah Diana, Sarifuddin, Norshahida, Abdullah, Jamaluddin
格式: Proceeding Paper
语言:English
English
出版: Springer 2023
主题:
Q Science (General)
TN600 Metallurgy
在线阅读:http://irep.iium.edu.my/109770/7/109770_Effect%20of%20pore%20forming%20agent%20on%20phase%20transformation%20behavior%20of%20porous%20NiTi%20shape%20memory%20alloy.pdf
http://irep.iium.edu.my/109770/13/109770_Effect%20of%20pore%20forming%20agent%20on%20phase%20transformation%20behavior%20of%20porous%20NiTi%20shape%20memory%20alloy_Scopus.pdf
http://irep.iium.edu.my/109770/
https://link.springer.com/chapter/10.1007/978-981-19-9509-5_67
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spelling my.iium.irep.1097702024-03-26T08:10:03Z http://irep.iium.edu.my/109770/ Effect of pore forming agent on phase transformation behavior of porous NiTi shape memory alloy Mohd Zaki, Hafizah Hanim Abd Kadir, Nur Amanina Jamal, Nur Ayuni Md. Abdul, Maleque Mohd Daud, Farah Diana Sarifuddin, Norshahida Abdullah, Jamaluddin Q Science (General) TN600 Metallurgy Porous NiTi shape memory alloy is of special interest for bioimplant materials due to its attractive features of NiTi dense structure such as low stiffness, high strength and excellent shape memory and pseudoelastic behavior. This porous NiTi can be produced via powder metallurgy technique using pore forming agent. The pore forming agent is used to create temporary pores that are occupied during sintering where the final sintered sample depends on the composition ratio of the pore forming agent. Porosity of up to 30–50% is predicted to be achieved which is similar to cancellous bone. However, there are queries whether the porous NiTi alloy produced may hinder the phase transformation behavior which is an indicator for shape memory behavior. Therefore, in this research, the effect of composition of pore forming agent such as calcium hydride, CaH2, on porosity level and how it correlates with phase transformation behavior of porous NiTi alloy were investigated. It shows that by increasing the percentage of CaH2 to 15 wt%, the porosity level of sintered sample can reach up to 42%. For phase transformation, there are martensitic transformation peaks observed for samples at a composition of ≤ 3wt% of CaH2 with enthalpy value of ~ 4.9 J/g. Increasing the percentage of CaH2 to ≥ 6wt%, the transformation enthalpy (ΔH) values drop significantly as the samples exhibit no martensitic transformation. This associated with the pores structure and undesirable phase that co-exist with NiTi formation, thus hindered the transformation enthalpy for porous NiTi. Springer 2023 Proceeding Paper PeerReviewed application/pdf en http://irep.iium.edu.my/109770/7/109770_Effect%20of%20pore%20forming%20agent%20on%20phase%20transformation%20behavior%20of%20porous%20NiTi%20shape%20memory%20alloy.pdf application/pdf en http://irep.iium.edu.my/109770/13/109770_Effect%20of%20pore%20forming%20agent%20on%20phase%20transformation%20behavior%20of%20porous%20NiTi%20shape%20memory%20alloy_Scopus.pdf Mohd Zaki, Hafizah Hanim and Abd Kadir, Nur Amanina and Jamal, Nur Ayuni and Md. Abdul, Maleque and Mohd Daud, Farah Diana and Sarifuddin, Norshahida and Abdullah, Jamaluddin (2023) Effect of pore forming agent on phase transformation behavior of porous NiTi shape memory alloy. In: Proceeding of 5th International Conference on Advances in Manufacturing and Materials Engineering ICAMME 2022, 9—10 August, Kuala Lumpur, Malaysia, 9-10 August 2022, Kuala Lumpur, Malaysia. https://link.springer.com/chapter/10.1007/978-981-19-9509-5_67
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
English
topic Q Science (General)
TN600 Metallurgy
spellingShingle Q Science (General)
TN600 Metallurgy
Mohd Zaki, Hafizah Hanim
Abd Kadir, Nur Amanina
Jamal, Nur Ayuni
Md. Abdul, Maleque
Mohd Daud, Farah Diana
Sarifuddin, Norshahida
Abdullah, Jamaluddin
Effect of pore forming agent on phase transformation behavior of porous NiTi shape memory alloy
description Porous NiTi shape memory alloy is of special interest for bioimplant materials due to its attractive features of NiTi dense structure such as low stiffness, high strength and excellent shape memory and pseudoelastic behavior. This porous NiTi can be produced via powder metallurgy technique using pore forming agent. The pore forming agent is used to create temporary pores that are occupied during sintering where the final sintered sample depends on the composition ratio of the pore forming agent. Porosity of up to 30–50% is predicted to be achieved which is similar to cancellous bone. However, there are queries whether the porous NiTi alloy produced may hinder the phase transformation behavior which is an indicator for shape memory behavior. Therefore, in this research, the effect of composition of pore forming agent such as calcium hydride, CaH2, on porosity level and how it correlates with phase transformation behavior of porous NiTi alloy were investigated. It shows that by increasing the percentage of CaH2 to 15 wt%, the porosity level of sintered sample can reach up to 42%. For phase transformation, there are martensitic transformation peaks observed for samples at a composition of ≤ 3wt% of CaH2 with enthalpy value of ~ 4.9 J/g. Increasing the percentage of CaH2 to ≥ 6wt%, the transformation enthalpy (ΔH) values drop significantly as the samples exhibit no martensitic transformation. This associated with the pores structure and undesirable phase that co-exist with NiTi formation, thus hindered the transformation enthalpy for porous NiTi.
format Proceeding Paper
author Mohd Zaki, Hafizah Hanim
Abd Kadir, Nur Amanina
Jamal, Nur Ayuni
Md. Abdul, Maleque
Mohd Daud, Farah Diana
Sarifuddin, Norshahida
Abdullah, Jamaluddin
author_facet Mohd Zaki, Hafizah Hanim
Abd Kadir, Nur Amanina
Jamal, Nur Ayuni
Md. Abdul, Maleque
Mohd Daud, Farah Diana
Sarifuddin, Norshahida
Abdullah, Jamaluddin
author_sort Mohd Zaki, Hafizah Hanim
title Effect of pore forming agent on phase transformation behavior of porous NiTi shape memory alloy
title_short Effect of pore forming agent on phase transformation behavior of porous NiTi shape memory alloy
title_full Effect of pore forming agent on phase transformation behavior of porous NiTi shape memory alloy
title_fullStr Effect of pore forming agent on phase transformation behavior of porous NiTi shape memory alloy
title_full_unstemmed Effect of pore forming agent on phase transformation behavior of porous NiTi shape memory alloy
title_sort effect of pore forming agent on phase transformation behavior of porous niti shape memory alloy
publisher Springer
publishDate 2023
url http://irep.iium.edu.my/109770/7/109770_Effect%20of%20pore%20forming%20agent%20on%20phase%20transformation%20behavior%20of%20porous%20NiTi%20shape%20memory%20alloy.pdf
http://irep.iium.edu.my/109770/13/109770_Effect%20of%20pore%20forming%20agent%20on%20phase%20transformation%20behavior%20of%20porous%20NiTi%20shape%20memory%20alloy_Scopus.pdf
http://irep.iium.edu.my/109770/
https://link.springer.com/chapter/10.1007/978-981-19-9509-5_67
_version_ 1794632354962079744
score 13.250345

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