Study on the mechanical properties of Ti-6Al-4V alloy with minimal surface structures: effects of different heat treatment temperatures
Triply periodic minimal surface (TPMS) structures are widely used in scaffold design for biomaterials due to their excellent porous architecture and mechanical properties. This study utilized selective laser melting (SLM) to fabricate TPMS scaffold models with porosities of 50%, 60%, 70%, and 80%, b...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/adaac3 |
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| author | Kai Qian Shuangyu Liu Fulong Zhang Guihua Hang Bo Cui Ziwei Guo Qiushi Zhang Wang Binhua |
| author_facet | Kai Qian Shuangyu Liu Fulong Zhang Guihua Hang Bo Cui Ziwei Guo Qiushi Zhang Wang Binhua |
| author_sort | Kai Qian |
| collection | DOAJ |
| description | Triply periodic minimal surface (TPMS) structures are widely used in scaffold design for biomaterials due to their excellent porous architecture and mechanical properties. This study utilized selective laser melting (SLM) to fabricate TPMS scaffold models with porosities of 50%, 60%, 70%, and 80%, based on Gyroid and Primitive unit cells. Compression tests were conducted to investigate the changes in mechanical properties of TPMS scaffolds before and after heat treatment. The mechanisms underlying these changes were elucidated through fracture morphology analysis, microstructural observation, and finite element simulation. Results indicate that Gyroid porous scaffolds exhibit superior compressive performance compared to Primitive scaffolds, with yield strength inversely related to porosity—lower porosity corresponds to higher yield strength. During compression, Primitive scaffolds exhibited a layer-by-layer stacking failure mode, whereas Gyroid scaffolds displayed a 45° shear failure mode. The Gyroid porous scaffolds showed uniform and continuous stress distribution, and heat treatment effectively relieved residual stresses, enhancing yield strength and toughness. In contrast, Primitive porous scaffolds demonstrated stress concentration regions that reach yield limits under compression, leading to fracture. Heat treatment did not alleviate these stress concentrations but instead reduced the material’s yield limit, accelerating scaffold failure. |
| format | Article |
| id | doaj-art-24fa11b2dd9742e6adf75b98592feb3d |
| institution | Kabale University |
| issn | 2053-1591 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj-art-24fa11b2dd9742e6adf75b98592feb3d2025-01-24T15:49:22ZengIOP PublishingMaterials Research Express2053-15912025-01-0112101651310.1088/2053-1591/adaac3Study on the mechanical properties of Ti-6Al-4V alloy with minimal surface structures: effects of different heat treatment temperaturesKai Qian0Shuangyu Liu1Fulong Zhang2https://orcid.org/0000-0002-1211-3294Guihua Hang3https://orcid.org/0009-0002-5925-6337Bo Cui4Ziwei Guo5Qiushi Zhang6Wang Binhua7College of Mechanical Engineering, Yancheng Institute of Technology , Yancheng 224051, People’s Republic of ChinaCollege of Mechanical Engineering, Yancheng Institute of Technology , Yancheng 224051, People’s Republic of ChinaCollege of Mechanical Engineering, Yancheng Institute of Technology , Yancheng 224051, People’s Republic of ChinaCollege of Mechanical Engineering, Yancheng Institute of Technology , Yancheng 224051, People’s Republic of ChinaSchool of Mechanical and Civil Engineering, Jilin Agricultural Science and Technology University , Jilin 132101, People’s Republic of ChinaCollege of Mechanical Engineering, Changchun Technical University of Automobile , Changchun, 130013, People’s Republic of ChinaCollege of Mechanical Engineering, Changchun Technical University of Automobile , Changchun, 130013, People’s Republic of ChinaJiangsu Global Laser Box Digital Tech Co., Ltd , Yancheng, 224001, People’s Republic of ChinaTriply periodic minimal surface (TPMS) structures are widely used in scaffold design for biomaterials due to their excellent porous architecture and mechanical properties. This study utilized selective laser melting (SLM) to fabricate TPMS scaffold models with porosities of 50%, 60%, 70%, and 80%, based on Gyroid and Primitive unit cells. Compression tests were conducted to investigate the changes in mechanical properties of TPMS scaffolds before and after heat treatment. The mechanisms underlying these changes were elucidated through fracture morphology analysis, microstructural observation, and finite element simulation. Results indicate that Gyroid porous scaffolds exhibit superior compressive performance compared to Primitive scaffolds, with yield strength inversely related to porosity—lower porosity corresponds to higher yield strength. During compression, Primitive scaffolds exhibited a layer-by-layer stacking failure mode, whereas Gyroid scaffolds displayed a 45° shear failure mode. The Gyroid porous scaffolds showed uniform and continuous stress distribution, and heat treatment effectively relieved residual stresses, enhancing yield strength and toughness. In contrast, Primitive porous scaffolds demonstrated stress concentration regions that reach yield limits under compression, leading to fracture. Heat treatment did not alleviate these stress concentrations but instead reduced the material’s yield limit, accelerating scaffold failure.https://doi.org/10.1088/2053-1591/adaac3TPMSheat treatmentadditive manufacturingfinite element simulation |
| spellingShingle | Kai Qian Shuangyu Liu Fulong Zhang Guihua Hang Bo Cui Ziwei Guo Qiushi Zhang Wang Binhua Study on the mechanical properties of Ti-6Al-4V alloy with minimal surface structures: effects of different heat treatment temperatures Materials Research Express TPMS heat treatment additive manufacturing finite element simulation |
| title | Study on the mechanical properties of Ti-6Al-4V alloy with minimal surface structures: effects of different heat treatment temperatures |
| title_full | Study on the mechanical properties of Ti-6Al-4V alloy with minimal surface structures: effects of different heat treatment temperatures |
| title_fullStr | Study on the mechanical properties of Ti-6Al-4V alloy with minimal surface structures: effects of different heat treatment temperatures |
| title_full_unstemmed | Study on the mechanical properties of Ti-6Al-4V alloy with minimal surface structures: effects of different heat treatment temperatures |
| title_short | Study on the mechanical properties of Ti-6Al-4V alloy with minimal surface structures: effects of different heat treatment temperatures |
| title_sort | study on the mechanical properties of ti 6al 4v alloy with minimal surface structures effects of different heat treatment temperatures |
| topic | TPMS heat treatment additive manufacturing finite element simulation |
| url | https://doi.org/10.1088/2053-1591/adaac3 |
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