Transitions of deformation mechanisms in new metastable β-titanium Ti-1500G alloy
Ultrahigh-strength titanium alloy (≥1250 MPa) innovation calls for an integrated framework combining novel deformation processing and microstructural control. However, a confluence of constitutive model and the deformation behavior of a new β-metastable titanium alloys (Ti-4Al-4Mo-4 V-5Cr-2Zr-1Nb, T...
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Elsevier
2025-03-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127525000838 |
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| author | Yongqiang Ye Yuanfei Han Siyuan Zhang Jianwen Le Fu Chen Jiaming Zhang Chunyu Shen Guangfa Huang Shewei Xin Weijie Lu Di Zhang |
| author_facet | Yongqiang Ye Yuanfei Han Siyuan Zhang Jianwen Le Fu Chen Jiaming Zhang Chunyu Shen Guangfa Huang Shewei Xin Weijie Lu Di Zhang |
| author_sort | Yongqiang Ye |
| collection | DOAJ |
| description | Ultrahigh-strength titanium alloy (≥1250 MPa) innovation calls for an integrated framework combining novel deformation processing and microstructural control. However, a confluence of constitutive model and the deformation behavior of a new β-metastable titanium alloys (Ti-4Al-4Mo-4 V-5Cr-2Zr-1Nb, Ti-1500G) remained ambiguous, making the optimization of precise processing parameters is difficult clarified. An integrated response of the flow stress caused by multiple mechanisms initiated softening and work hardening was characterized using a strain-compensated constitutive model, including shear bands, dynamic recovery and dynamic recrystallization (DRX). Particular attention in this work was placed on in-depth understanding the thermal processing sensitivity of deformation mechanisms transformation. A two-dimensional deformation-mechanism map (DMM) as a function of temperature and strain rate was creatively proposed on the basis of energy dissipation efficiency mechanisms. The transition of deformation mechanisms was attributed to the decreasing thermal activation energy from α + β phase region (413.78 kJ/mol) to β phase region (219.24 kJ/mol), accompanied by dynamic phase transformation and activated dynamic α globularization. Otherwise, low strain rates promote α phases-dislocation interactions to accelerate the DRX grains nucleation. The DMM with various physical parameters is an efficient approach for guiding the thermomechanical processing of ultrahigh-strength titanium alloy large-scale components to reduce cracking tendency. |
| format | Article |
| id | doaj-art-3b10148603de4054afd14f35a2616fdb |
| institution | Kabale University |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-3b10148603de4054afd14f35a2616fdb2025-02-02T05:26:41ZengElsevierMaterials & Design0264-12752025-03-01251113663Transitions of deformation mechanisms in new metastable β-titanium Ti-1500G alloyYongqiang Ye0Yuanfei Han1Siyuan Zhang2Jianwen Le3Fu Chen4Jiaming Zhang5Chunyu Shen6Guangfa Huang7Shewei Xin8Weijie Lu9Di Zhang10The State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaThe State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Key Laboratory of Advanced High Temperature Materials and Precision Forming, Shanghai 200240, China; Corresponding authors at: The State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.Northwest Institute for Nonferrous Metal Research, Xi’an 710016, ChinaThe State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaThe State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaThe State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaThe State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaThe State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaNorthwest Institute for Nonferrous Metal Research, Xi’an 710016, ChinaThe State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Key Laboratory of Advanced High Temperature Materials and Precision Forming, Shanghai 200240, China; Corresponding authors at: The State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.The State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaUltrahigh-strength titanium alloy (≥1250 MPa) innovation calls for an integrated framework combining novel deformation processing and microstructural control. However, a confluence of constitutive model and the deformation behavior of a new β-metastable titanium alloys (Ti-4Al-4Mo-4 V-5Cr-2Zr-1Nb, Ti-1500G) remained ambiguous, making the optimization of precise processing parameters is difficult clarified. An integrated response of the flow stress caused by multiple mechanisms initiated softening and work hardening was characterized using a strain-compensated constitutive model, including shear bands, dynamic recovery and dynamic recrystallization (DRX). Particular attention in this work was placed on in-depth understanding the thermal processing sensitivity of deformation mechanisms transformation. A two-dimensional deformation-mechanism map (DMM) as a function of temperature and strain rate was creatively proposed on the basis of energy dissipation efficiency mechanisms. The transition of deformation mechanisms was attributed to the decreasing thermal activation energy from α + β phase region (413.78 kJ/mol) to β phase region (219.24 kJ/mol), accompanied by dynamic phase transformation and activated dynamic α globularization. Otherwise, low strain rates promote α phases-dislocation interactions to accelerate the DRX grains nucleation. The DMM with various physical parameters is an efficient approach for guiding the thermomechanical processing of ultrahigh-strength titanium alloy large-scale components to reduce cracking tendency.http://www.sciencedirect.com/science/article/pii/S0264127525000838Metastable β titanium alloyHot deformationMicrostructural evolutionDeformation-mechanism map |
| spellingShingle | Yongqiang Ye Yuanfei Han Siyuan Zhang Jianwen Le Fu Chen Jiaming Zhang Chunyu Shen Guangfa Huang Shewei Xin Weijie Lu Di Zhang Transitions of deformation mechanisms in new metastable β-titanium Ti-1500G alloy Materials & Design Metastable β titanium alloy Hot deformation Microstructural evolution Deformation-mechanism map |
| title | Transitions of deformation mechanisms in new metastable β-titanium Ti-1500G alloy |
| title_full | Transitions of deformation mechanisms in new metastable β-titanium Ti-1500G alloy |
| title_fullStr | Transitions of deformation mechanisms in new metastable β-titanium Ti-1500G alloy |
| title_full_unstemmed | Transitions of deformation mechanisms in new metastable β-titanium Ti-1500G alloy |
| title_short | Transitions of deformation mechanisms in new metastable β-titanium Ti-1500G alloy |
| title_sort | transitions of deformation mechanisms in new metastable β titanium ti 1500g alloy |
| topic | Metastable β titanium alloy Hot deformation Microstructural evolution Deformation-mechanism map |
| url | http://www.sciencedirect.com/science/article/pii/S0264127525000838 |
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