Temperature-dependent performance and constitutive modeling of additively manufactured Ti600 alloy
Titanium alloys produced through selective laser melting (SLM) are increasingly utilized in aerospace, defense, and marine sectors due to their design flexibility and high-temperature capabilities. Therefore, precise temperature-dependent characterization is essential for optimizing their engineerin...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424029041 |
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| author | Tianhua Wen Rui Fu Sihang Xiao Lei Zhang Bo Song Hongshuai Lei |
| author_facet | Tianhua Wen Rui Fu Sihang Xiao Lei Zhang Bo Song Hongshuai Lei |
| author_sort | Tianhua Wen |
| collection | DOAJ |
| description | Titanium alloys produced through selective laser melting (SLM) are increasingly utilized in aerospace, defense, and marine sectors due to their design flexibility and high-temperature capabilities. Therefore, precise temperature-dependent characterization is essential for optimizing their engineering applications. This study investigates the thermal and mechanical properties of SLM-fabricated Ti600 alloy across a temperature range from room temperature to 700 °C. The findings indicate that thermal conductivity and thermal expansion both increased with temperature. Tensile testing shows a decrease in elastic modulus and ultimate tensile strength as temperature rises, with a significant decline observed near 550 °C. Microstructural analysis of tensile fractures reveals coarsening of the precipitated phase at temperatures above 500 °C, which correlates with the observed reduction in mechanical performance. Differential scanning calorimetry identifies 550 °C as a critical phase transition temperature, further explaining the degradation in properties. In addition, a temperature-dependent thermal performance prediction model and a bilinear temperature-dependent (BTD) constitutive model, incorporating strain hardening and phase transformation, were developed. Compared to the conventional Johnson-Cook constitutive model, the BTD model demonstrates superior accuracy in predicting stress-strain behavior at elevated temperatures. This study addresses the gap in knowledge regarding the high-temperature thermal and mechanical behavior of SLM-fabricated Ti600, offering valuable insights for its broader industrial application. |
| format | Article |
| id | doaj-art-a109f482f5dc4e21b3352ad8c1512963 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-a109f482f5dc4e21b3352ad8c15129632025-01-19T06:25:28ZengElsevierJournal of Materials Research and Technology2238-78542025-01-0134776784Temperature-dependent performance and constitutive modeling of additively manufactured Ti600 alloyTianhua Wen0Rui Fu1Sihang Xiao2Lei Zhang3Bo Song4Hongshuai Lei5Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, ChinaBeijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, ChinaBeijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, ChinaState Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, ChinaState Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China; Corresponding author.Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, China; Corresponding author.Titanium alloys produced through selective laser melting (SLM) are increasingly utilized in aerospace, defense, and marine sectors due to their design flexibility and high-temperature capabilities. Therefore, precise temperature-dependent characterization is essential for optimizing their engineering applications. This study investigates the thermal and mechanical properties of SLM-fabricated Ti600 alloy across a temperature range from room temperature to 700 °C. The findings indicate that thermal conductivity and thermal expansion both increased with temperature. Tensile testing shows a decrease in elastic modulus and ultimate tensile strength as temperature rises, with a significant decline observed near 550 °C. Microstructural analysis of tensile fractures reveals coarsening of the precipitated phase at temperatures above 500 °C, which correlates with the observed reduction in mechanical performance. Differential scanning calorimetry identifies 550 °C as a critical phase transition temperature, further explaining the degradation in properties. In addition, a temperature-dependent thermal performance prediction model and a bilinear temperature-dependent (BTD) constitutive model, incorporating strain hardening and phase transformation, were developed. Compared to the conventional Johnson-Cook constitutive model, the BTD model demonstrates superior accuracy in predicting stress-strain behavior at elevated temperatures. This study addresses the gap in knowledge regarding the high-temperature thermal and mechanical behavior of SLM-fabricated Ti600, offering valuable insights for its broader industrial application.http://www.sciencedirect.com/science/article/pii/S2238785424029041Titanium alloysSelective laser meltingMechanical propertiesThermal conductivityConstitutive modeling |
| spellingShingle | Tianhua Wen Rui Fu Sihang Xiao Lei Zhang Bo Song Hongshuai Lei Temperature-dependent performance and constitutive modeling of additively manufactured Ti600 alloy Journal of Materials Research and Technology Titanium alloys Selective laser melting Mechanical properties Thermal conductivity Constitutive modeling |
| title | Temperature-dependent performance and constitutive modeling of additively manufactured Ti600 alloy |
| title_full | Temperature-dependent performance and constitutive modeling of additively manufactured Ti600 alloy |
| title_fullStr | Temperature-dependent performance and constitutive modeling of additively manufactured Ti600 alloy |
| title_full_unstemmed | Temperature-dependent performance and constitutive modeling of additively manufactured Ti600 alloy |
| title_short | Temperature-dependent performance and constitutive modeling of additively manufactured Ti600 alloy |
| title_sort | temperature dependent performance and constitutive modeling of additively manufactured ti600 alloy |
| topic | Titanium alloys Selective laser melting Mechanical properties Thermal conductivity Constitutive modeling |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424029041 |
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