Physical and hardness performance at different surfaces for titanium alloy (Ti6Al4V) printed using selective laser melting process (SLM)
Selective laser melting (SLM) 3D product is capable of producing varied surfaces such as top, core and bottom surface depending on the product dimensions and building orientation. Each surface may have differences in physical and mechanical properties such as surface roughness, microhardness, and mi...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit Universiti Kebangsaan Malaysia
2024
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| Online Access: | http://journalarticle.ukm.my/25402/ http://journalarticle.ukm.my/25402/1/kejut_31.pdf |
| _version_ | 1848816348427190272 |
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| author | Farhana Mohd Foudzi, Lai, Yu Hung Fathin Iliana Jamhari, Minhalina Ahmad Buhairi, Abu Bakar Sulong, Norhamidi Muhamad, Nabilah Afiqah Mohd Radzuan, Izhar Aziz, Kim, Seah Tan |
| author_facet | Farhana Mohd Foudzi, Lai, Yu Hung Fathin Iliana Jamhari, Minhalina Ahmad Buhairi, Abu Bakar Sulong, Norhamidi Muhamad, Nabilah Afiqah Mohd Radzuan, Izhar Aziz, Kim, Seah Tan |
| author_sort | Farhana Mohd Foudzi, |
| building | UKM Institutional Repository |
| collection | Online Access |
| description | Selective laser melting (SLM) 3D product is capable of producing varied surfaces such as top, core and bottom surface depending on the product dimensions and building orientation. Each surface may have differences in physical and mechanical properties such as surface roughness, microhardness, and microstructure. Therefore, this study examined the effects of SLM processing parameters as well as volumetric energy density (VED) on surface roughness, microhardness and microstructure on different 3D product surfaces. In this study, a sample of titanium alloy cube (Ti6Al4V) with different surfaces of up skin 1 (US1), up skin 2 (US2), core skin (CS) and down skin (DS) are printed on a 30° building orientation printed through the SLM process. There are nine sets of parameters printed based on the Taguchi experimental design method. All printed cube samples were heat treated to remove the residual stresses generated during the printing process. The effect of processing parameters on micro hardness as well as microstructure on each surface has been studied. This study found that SLM printed Ti6Al4V produced almost identical surface quality for different surfaces of the cubic samples. Surface roughness of US2 ranging between 15.38 μm and 26.22 μm, while DS is slightly rougher with surface roughness in the range of 16.05 μm and 27.64 μm. Microhardness in the nine processing sets however was found to have a bigger difference in values of 387 ± 10 HV (US2) and 362 ± 10 HV (DS). In general, US2 surfaces were found to have high microhardness compared to the DS surfaces due to the formation of long, straight needle-like martensitic microstructure. |
| first_indexed | 2025-11-15T01:04:27Z |
| format | Article |
| id | oai:generic.eprints.org:25402 |
| institution | Universiti Kebangasaan Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T01:04:27Z |
| publishDate | 2024 |
| publisher | Penerbit Universiti Kebangsaan Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | oai:generic.eprints.org:254022025-06-24T08:17:52Z http://journalarticle.ukm.my/25402/ Physical and hardness performance at different surfaces for titanium alloy (Ti6Al4V) printed using selective laser melting process (SLM) Farhana Mohd Foudzi, Lai, Yu Hung Fathin Iliana Jamhari, Minhalina Ahmad Buhairi, Abu Bakar Sulong, Norhamidi Muhamad, Nabilah Afiqah Mohd Radzuan, Izhar Aziz, Kim, Seah Tan Selective laser melting (SLM) 3D product is capable of producing varied surfaces such as top, core and bottom surface depending on the product dimensions and building orientation. Each surface may have differences in physical and mechanical properties such as surface roughness, microhardness, and microstructure. Therefore, this study examined the effects of SLM processing parameters as well as volumetric energy density (VED) on surface roughness, microhardness and microstructure on different 3D product surfaces. In this study, a sample of titanium alloy cube (Ti6Al4V) with different surfaces of up skin 1 (US1), up skin 2 (US2), core skin (CS) and down skin (DS) are printed on a 30° building orientation printed through the SLM process. There are nine sets of parameters printed based on the Taguchi experimental design method. All printed cube samples were heat treated to remove the residual stresses generated during the printing process. The effect of processing parameters on micro hardness as well as microstructure on each surface has been studied. This study found that SLM printed Ti6Al4V produced almost identical surface quality for different surfaces of the cubic samples. Surface roughness of US2 ranging between 15.38 μm and 26.22 μm, while DS is slightly rougher with surface roughness in the range of 16.05 μm and 27.64 μm. Microhardness in the nine processing sets however was found to have a bigger difference in values of 387 ± 10 HV (US2) and 362 ± 10 HV (DS). In general, US2 surfaces were found to have high microhardness compared to the DS surfaces due to the formation of long, straight needle-like martensitic microstructure. Penerbit Universiti Kebangsaan Malaysia 2024 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/25402/1/kejut_31.pdf Farhana Mohd Foudzi, and Lai, Yu Hung and Fathin Iliana Jamhari, and Minhalina Ahmad Buhairi, and Abu Bakar Sulong, and Norhamidi Muhamad, and Nabilah Afiqah Mohd Radzuan, and Izhar Aziz, and Kim, Seah Tan (2024) Physical and hardness performance at different surfaces for titanium alloy (Ti6Al4V) printed using selective laser melting process (SLM). Jurnal Kejuruteraan, 36 (3). pp. 1217-1226. ISSN 0128-0198 https://www.ukm.my/jkukm/volume-3603-2024/ |
| spellingShingle | Farhana Mohd Foudzi, Lai, Yu Hung Fathin Iliana Jamhari, Minhalina Ahmad Buhairi, Abu Bakar Sulong, Norhamidi Muhamad, Nabilah Afiqah Mohd Radzuan, Izhar Aziz, Kim, Seah Tan Physical and hardness performance at different surfaces for titanium alloy (Ti6Al4V) printed using selective laser melting process (SLM) |
| title | Physical and hardness performance at different surfaces for titanium alloy (Ti6Al4V) printed using selective laser melting process (SLM) |
| title_full | Physical and hardness performance at different surfaces for titanium alloy (Ti6Al4V) printed using selective laser melting process (SLM) |
| title_fullStr | Physical and hardness performance at different surfaces for titanium alloy (Ti6Al4V) printed using selective laser melting process (SLM) |
| title_full_unstemmed | Physical and hardness performance at different surfaces for titanium alloy (Ti6Al4V) printed using selective laser melting process (SLM) |
| title_short | Physical and hardness performance at different surfaces for titanium alloy (Ti6Al4V) printed using selective laser melting process (SLM) |
| title_sort | physical and hardness performance at different surfaces for titanium alloy (ti6al4v) printed using selective laser melting process (slm) |
| url | http://journalarticle.ukm.my/25402/ http://journalarticle.ukm.my/25402/ http://journalarticle.ukm.my/25402/1/kejut_31.pdf |