High-strength Ti-Al-V-Zr cast alloys designed using α and β cluster formulas

被引：0
作者：
Zhi-hao Zhu
Yu-han Liu
Zhi-peng Chen
Tian-yu Liu
Shuang Zhang
Dan-dan Dong
Chuang Dong
机构：
[1] Dalian University of Technology,Key Laboratory for Materials Modification by Laser, Ion, and Electron Beams and School of Materials Science and Engineering
[2] Shenyang Research Institute of Foundry Co.,State Key Laboratory of Light Alloy Casting Technology for High
[3] Ltd.,end Equipment
[4] Dalian Jiaotong University,School of Materials Science and Engineering
[5] Dalian University,College of Physical Science and Technology
来源：
China Foundry | 2023年 / 20卷
关键词：
titanium alloy; cluster-plus-glue-atom model; composition design; microstructure; mechanical properties; TG146.23; A;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Ti-Al-V-Zr quaternary titanium alloys were designed following α-{[Al-Ti12](AlTi2)}17−n+β-{[Al-Ti12Zr2](V3)}n, where n=1–7 (the number of β units), on the basis of the dual-cluster formula of popular Ti-6Al-4V alloy. Such an alloying strategy aims at strengthening the alloy via Zr and V co-alloying in the β-Ti unit, based on the original β formula [Al-Ti14](V2Ti) of Ti-6Al-4V alloy. The microstructures of the as-cast alloys by copper-mold suction-casting change from pure α (n=1) to α+α′ martensite (n=7). When n is 6, Ti-5.6Al-6.8V-8.1Zr alloy reaches the highest ultimate tensile strength of 1,293 MPa and yield strength of 1,097 MPa, at the expense of a low elongation of 2%, mainly due to the presence of a large amount of acicular α′ martensite. Its specific strength far exceeds that of Ti-6Al-4V alloy by 35%.
引用
收藏
页码：23 / 28
页数：5
相关论文
共 62 条
[1]  
Banerjee D(2013)Perspectives on titanium science and technology Acta Materialia 61 844-879
[2]  
Williams J C(2022)A new α+β Ti-alloy with refined microstructures and enhanced mechanical properties in the as-cast state Scripta Materialia 207 114260-580
[3]  
Zhang T L(2021)Microstructure and mechanical properties of laser additive manufactured novel titanium alloy after heat treatment China Foundry 18 574-309
[4]  
Zhu J M(2008)A comparative study of the mechanical properties of high-strength β-titanium alloys Journal of Alloys and Compounds 457 296-231
[5]  
Yang T(2019)Inclusions in melting process of titanium and titanium alloys China Foundry 18 223-896
[6]  
Liu T Y(2020)Research and development of 600 °C high temperature titanium alloys Foundry Technology 41 894-1740
[7]  
Liu H Y(2021)Composition formulas of Ti alloys derived by interpreting Ti-6Al-4V Science China Technological Sciences 64 1732-1879
[8]  
Yao Q(2013)β-Ti Alloys with low Young’s moduli interpreted by cluster-plus-glue-atom model Metallurgical and Materials Transactions A 44 1872-432
[9]  
Ivasishin O M(2021)Design for Ti-Al-V-Mo-Nb alloys for laser additive manufacturing based on a cluster model and on their microstructure and properties China Foundry 18 424-2592
[10]  
Markovsky P E(2022)Achieving high-temperature strength and plasticity in near-α Ti-7Al-3Zr-2V alloy using cluster formula design Journal of Materials Research and Technology 18 2582-2092
1234567