Enhanced strength and reduced elastic modulus of biomedical metastable β Ti–Nb alloy via intermediate phase transformation
The high strength of biomedical titanium alloys is primarily attained through precipitation strengthening of the α phase. However, the plasticity and elastic modulus of these alloys are often limited due to their inherent strength–toughness tradeoff and the high-modulus α phase. Metastable β-type Ti...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-03-01
|
| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127525000826 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832576553986293760 |
|---|---|
| author | Meng Qiang Xi-rong Yang Geng-jie Wang Xiao-yan Liu Lei Luo Qun Ren Jing-zhong Wang |
| author_facet | Meng Qiang Xi-rong Yang Geng-jie Wang Xiao-yan Liu Lei Luo Qun Ren Jing-zhong Wang |
| author_sort | Meng Qiang |
| collection | DOAJ |
| description | The high strength of biomedical titanium alloys is primarily attained through precipitation strengthening of the α phase. However, the plasticity and elastic modulus of these alloys are often limited due to their inherent strength–toughness tradeoff and the high-modulus α phase. Metastable β-type Ti–Nb alloys were subjected to equal-channel angular pressing (ECAP) deformation and aging treatment in this study. The lattice defects and high distortion induced by the deformation can provide nucleation sites and drive the precipitation during aging, as well as hinder the dissolution of the low-modulus stress-induced martensitic (SIM) α′′ phase introduced during the deformation, which results in the formation of fine and dispersed nanosized intermediate phases (α + ω + α′′) after short-term aging. As a result, a Ti–Nb alloy with a high strength (∼1021 MPa), low elastic modulus (∼59 GPa), and good elongation (∼12 %) is obtained. Furthermore, the competition between the ω and α phases is observed. The comprehensive mechanical properties of the alloy prepared by ECAP deformation combined with aging treatment in this study surpasses those of many reported titanium alloys prepared by traditional deformation or thermal treatment, which provides a valuable reference for the production of advanced biomedical titanium alloys. |
| format | Article |
| id | doaj-art-7d08ae652a744e4ab7315cc3f9669054 |
| institution | Kabale University |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-7d08ae652a744e4ab7315cc3f96690542025-01-31T05:10:04ZengElsevierMaterials & Design0264-12752025-03-01251113662Enhanced strength and reduced elastic modulus of biomedical metastable β Ti–Nb alloy via intermediate phase transformationMeng Qiang0Xi-rong Yang1Geng-jie Wang2Xiao-yan Liu3Lei Luo4Qun Ren5Jing-zhong Wang6School of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055 ChinaSchool of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055 China; National Experimental Teaching Demonstration Center of Metallurgical Technology, Xi’an 710055 China; Corresponding author at: School of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China.State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an 710049 ChinaSchool of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055 ChinaSchool of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055 ChinaSchool of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055 ChinaSchool of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055 ChinaThe high strength of biomedical titanium alloys is primarily attained through precipitation strengthening of the α phase. However, the plasticity and elastic modulus of these alloys are often limited due to their inherent strength–toughness tradeoff and the high-modulus α phase. Metastable β-type Ti–Nb alloys were subjected to equal-channel angular pressing (ECAP) deformation and aging treatment in this study. The lattice defects and high distortion induced by the deformation can provide nucleation sites and drive the precipitation during aging, as well as hinder the dissolution of the low-modulus stress-induced martensitic (SIM) α′′ phase introduced during the deformation, which results in the formation of fine and dispersed nanosized intermediate phases (α + ω + α′′) after short-term aging. As a result, a Ti–Nb alloy with a high strength (∼1021 MPa), low elastic modulus (∼59 GPa), and good elongation (∼12 %) is obtained. Furthermore, the competition between the ω and α phases is observed. The comprehensive mechanical properties of the alloy prepared by ECAP deformation combined with aging treatment in this study surpasses those of many reported titanium alloys prepared by traditional deformation or thermal treatment, which provides a valuable reference for the production of advanced biomedical titanium alloys.http://www.sciencedirect.com/science/article/pii/S0264127525000826Ti–Nb alloyEqual-channel angular pressing deformationStress-induced martensitePrecipitated phaseElastic modulus |
| spellingShingle | Meng Qiang Xi-rong Yang Geng-jie Wang Xiao-yan Liu Lei Luo Qun Ren Jing-zhong Wang Enhanced strength and reduced elastic modulus of biomedical metastable β Ti–Nb alloy via intermediate phase transformation Materials & Design Ti–Nb alloy Equal-channel angular pressing deformation Stress-induced martensite Precipitated phase Elastic modulus |
| title | Enhanced strength and reduced elastic modulus of biomedical metastable β Ti–Nb alloy via intermediate phase transformation |
| title_full | Enhanced strength and reduced elastic modulus of biomedical metastable β Ti–Nb alloy via intermediate phase transformation |
| title_fullStr | Enhanced strength and reduced elastic modulus of biomedical metastable β Ti–Nb alloy via intermediate phase transformation |
| title_full_unstemmed | Enhanced strength and reduced elastic modulus of biomedical metastable β Ti–Nb alloy via intermediate phase transformation |
| title_short | Enhanced strength and reduced elastic modulus of biomedical metastable β Ti–Nb alloy via intermediate phase transformation |
| title_sort | enhanced strength and reduced elastic modulus of biomedical metastable β ti nb alloy via intermediate phase transformation |
| topic | Ti–Nb alloy Equal-channel angular pressing deformation Stress-induced martensite Precipitated phase Elastic modulus |
| url | http://www.sciencedirect.com/science/article/pii/S0264127525000826 |
| work_keys_str_mv | AT mengqiang enhancedstrengthandreducedelasticmodulusofbiomedicalmetastablebtinballoyviaintermediatephasetransformation AT xirongyang enhancedstrengthandreducedelasticmodulusofbiomedicalmetastablebtinballoyviaintermediatephasetransformation AT gengjiewang enhancedstrengthandreducedelasticmodulusofbiomedicalmetastablebtinballoyviaintermediatephasetransformation AT xiaoyanliu enhancedstrengthandreducedelasticmodulusofbiomedicalmetastablebtinballoyviaintermediatephasetransformation AT leiluo enhancedstrengthandreducedelasticmodulusofbiomedicalmetastablebtinballoyviaintermediatephasetransformation AT qunren enhancedstrengthandreducedelasticmodulusofbiomedicalmetastablebtinballoyviaintermediatephasetransformation AT jingzhongwang enhancedstrengthandreducedelasticmodulusofbiomedicalmetastablebtinballoyviaintermediatephasetransformation |