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Sains Malaysiana 51(6)(2022):
http://doi.org/10.17576/jsm-2022-5106-23
Pencirian dan Perbandingan Serbuk Aloi Titanium (Ti6Al4V)
yang Digunakan dalam Peleburan Laser Selektif (SLM)
(Characterisation and Comparison
of Titanium Alloy (Ti6Al4V) Powders Used in Selective Laser Melting (SLM))
FARHANA MOHD
FOUDZI*, FATHIN ILIANA JAMHARI & MINHALINA AHMAD BUHAIRI
Jabatan Kejuruteraan Mekanikal dan Pembuatan, Fakulti Kejuruteraan dan Alam Bina, Universiti Kebangsaan Malaysia, 43600
UKM Bangi, Selangor Darul Ehsan, Malaysia
Received: 28 August 2021/ Accepted: 30
October 2021
Abstrak
Ciri serbuk aloi titanium (Ti6Al4V) yang digunakan dalam pembuatan aditif logam (MAM) amat penting dalam menjamin mutu produk yang dihasilkan. Salah satu teknologi dalam MAM adalah Peleburan Laser Selektif (SLM). Mesin pencetakan SLM telah dibangunkan oleh beberapa syarikat seperti SLM Solutions Group AG dan Renishaw PLC. Bagi menjamin kualiti produk mesin masing-masing, setiap syarikat menghasilkan serbuk logam tersendiri.
Hal ini membataskan potensi penggunaan SLM kerana pengguna tidak boleh menggunakan serbuk logam mereka sendiri. Maka, kajian ini bertujuan untuk mengkaji perbezaan antara serbuk Ti6Al4V yang dihasilkan oleh SLM Solutions dan Renishaw, dan juga menentukan ciri serbuk Ti6Al4V yang sesuai untuk kaedah SLM. Pencirian sampel serbuk telah dilakukan bagi mengkaji bentuk dan saiz zarah, rencaman kimia dan struktur kristalografi. Sampel serbuk Ti6Al4V daripada SLM
Solutions dan Renishaw masing-masing ditandakan sebagai S1 dan S2. Analisis SEM menunjukkan sampel S2 mempunyai bentuk sfera yang lebih sempurna berbanding sampel S1. Analisis rencaman kimia menunjukkan kedua-dua sampel mempunyai taburan unsur kimia yang serupa dengan nilai kajian lampau. Selain itu, analisis taburan saiz zarah menunjukkan saiz zarah S1 dan S2 adalah kurang daripada 45 µm dengan nilai tersebut masih dalam lingkungan yang boleh diterima dalam MAM iaitu 10 hingga 60 µm. Analisis XRD menunjukkan kedua-dua sampel mempunyai puncak keamatan dan struktur kristal berbentuk heksagon yang serupa. Diharapkan makalah ini dapat dijadikan panduan bagi mereka yang ingin menghasilkan sendiri serbuk Ti6Al4V bagi penggunaan proses fabrikasi SLM.
Kata kunci: Peleburan laser selektif (SLM); pencirian serbuk logam; Ti6Al4V
Abstract
Properties
of titanium alloy (Ti6Al4V) powder used in Metal Additive Manufacturing (MAM)
is critical to finished product's performance. MAM technologies include
Selective Laser Melting (SLM) method. Several companies in the industry, including
SLM Solutions Group AG and Renishaw PLC, have developed the SLM printing
machine. To guarantee the quality of their goods, the companies created their
own unique Ti6Al4V powders. Due to end-users not permitted to utilise their own
powders, the potential for SLM usage is limited. Thus, the aim of this study
was to compare the Ti6Al4V powders made by SLM Solutions and Renishaw, and
determine the suitable range of Ti6Al4V powder properties needed for SLM
method. Powder samples were characterised to determine their particle shape and
size, chemical composition, and crystal structure. The Ti6Al4V powders from SLM
Solutions and Renishaw are denoted as S1 and S2, respectively. SEM analysis
showed that S2
Keywords:
Powder characterisation; selective laser melting (SLM); Ti6Al4V
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*Corresponding author; email: farhana.foudzi@ukm.edu.my
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