Structure evolution and thermal stability of SMAT-derived nanograined layer on Ti-25Nb-3Mo-3Zr-2Sn alloy at elevated temperatures

被引：0
|
作者：
机构：
[1] Huang, Run
[2] Han, Yong
来源：
Han, Y. (yonghan@mail.xjtu.edu.cn) | 1600年 / Elsevier Ltd卷 / 554期
关键词：
A nanocrystalline layer; which consists of pure β phase with average grain size of about 30 nm on Ti-25Nb-3Mo-3Zr-2Sn alloy; was fabricated by surface mechanical attrition treatment (SMAT). The microstructure evolution; phase transitions and thermal stability of the nanocrystalline layer during isochronal annealing at temperatures of 300-600 °C were investigated by XRD and TEM. During annealing; the nanocrystalline layer underwent recovery; recrystallization and significant grain growth. Recovery occurs at temperatures from 300 to 400 °C resulting in strain relaxation; dislocation annihilation and a very limited growth of β grains dominated by re-ordering of grain boundaries (GBs). α Precipitates start to precipitate along the β GBs at 350 °C; which exhibit equiaxed morphology with size less than 10 nm. Recrystallization proceeds at a higher temperature up to 450 °C leading to a reduction of β grain size. Due to the pinning effect of the α precipitates; β grains sizes can be maintained less than 100 nm until the annealing temperature increased to 550 °C; e.g; 0.41 Tm (melting temperature in K); above which significant grain growth occurs to overstep nanocystalline scale; and the growth activation energy of β grains is calculated as 40.8 kJ/mol. The abnormal low value is caused by the nonequilibrium GBs of β grains in the as-SMATed surface layer; which increase atomic mobility even in the presence of pinning effect of the α precipitates on the β GBs. © 2012 Elsevier B.V. All rights reserved;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Journal article (JA)
引用
收藏
相关论文
共 50 条
  • [41] Effect of Ultrasonic Surface Impact on the Fatigue Properties of Ti3Zr2Sn3Mo25Nb
    Cheng, Zhangjianing
    Cao, Xiaojian
    Xu, Xiaoli
    Shen, Qiangru
    Yu, Tianchong
    Jin, Jiang
    MATERIALS, 2020, 13 (09)
  • [42] Effect of short thermal treatment on microstructure evolution and superelasticity in Ti-20Zr-3Mo-3Sn alloy
    Cheng, X. J.
    Li, L. F.
    Wang, Y. X.
    Chen, L. P.
    Gao, J. J.
    Liu, D. B.
    MATERIALS TODAY COMMUNICATIONS, 2025, 42
  • [43] Haemocompatibility of Ti-3Zr-2Sn-3Mo-25Nb biomedical alloy with surface heparinization using electrostatic self assembly technology
    Yu Sen
    Yu Zhen-tao
    Han Jian-ye
    Wang Gui
    Niu Jin-long
    Dargusch, Matthew S.
    TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2012, 22 (12) : 3046 - 3052
  • [44] Modification effect of graphene oxide on oxidation coating of Ti-3Zr-2Sn-3Mo-25 Nb near-β titanium alloy
    Wang, Jingyi
    Liu, Liangwen
    Yang, Mei
    Wu, Xin
    Li, Shuang
    Zhang, Wenhao
    Zhang, Hao
    JOURNAL OF ALLOYS AND COMPOUNDS, 2022, 901
  • [45] Comparison of the Microstructure and Biocorrosion Properties of Additively Manufactured and Conventionally Fabricated near β Ti-25Nb-3Zr-3Mo-2Sn Alloy
    Dargusch, Matthew S.
    Wang, Gui
    Kent, Damon
    Bermingham, Michael
    Venezuela, Jeffrey
    Frith, Jessica E.
    Yu, Zhentao
    Yu, Sen
    Shi, Zhiming
    ACS BIOMATERIALS SCIENCE & ENGINEERING, 2019, 5 (11): : 5844 - 5856
  • [46] Tribocorrosion Behaviour of a Ti-25Nb-3Zr-2Sn-3Mo Alloys Induction Nitride Layer in a Simulated Body Fluid Solution
    Dai, Yan
    Jiang, Xueting
    Ou, Meigui
    Li, Kunmao
    Xiang, Qing
    Yang, Feng
    Liu, Jing
    COATINGS, 2023, 13 (02)
  • [47] SiC和Al2O3颗粒对Ti-25Nb-3Mo-3Zr-2Sn合金微磨损行为的影响（英文）
    王振国
    毕衍泽
    李岩
    蔡海娇
    稀有金属材料与工程, 2019, 48 (05) : 1421 - 1428
  • [48] 用于冠脉支架的Ti3Mo2Sn3Zr25Nb合金研究
    皇甫强
    于振涛
    韩建业
    袁思波
    余森
    张亚峰
    刘春潮
    麻西群
    中国材料进展, 2016, 35 (05) : 386 - 390
  • [49] Microstructure characteristics and strain rate sensitivity of a biomedical Ti-25Nb-3Zr-3Mo-2Sn titanium alloy during thermomechanical processing
    Tian, Y. X.
    Wang, G.
    Yu, S.
    Yu, Z. T.
    JOURNAL OF MATERIALS SCIENCE, 2015, 50 (15) : 5165 - 5173
  • [50] Enhanced bioactivity and interfacial bonding strength of Ti3Zr2Sn3Mo25Nb alloy through graded porosity and surface bioactivation
    Sen Yu
    Zhe Yu
    Dagang Guo
    Hui Zhu
    Minghua Zhang
    Jianye Han
    Zhentao Yu
    Yemin Cao
    Gui Wang
    JournalofMaterialsScience&Technology, 2022, 100 (05) : 137 - 149
12345