+Advanced Search
Home > Archive>Volume 49, Issue 5, 2020 >1681-1688. DOI:10.12442/j.issn.1002-185X.20190596
PDF HTML XML Export Cite reminder
Effect of Different Molds on Microstructure and Mechanical Properties of Titanium Alloys
Author:
Affiliation:

1.Xi''an University of Science and Technology;2.xi''an University of Science and Technology;3.Henan Institute of Technology

Clc Number:

TG241；TG249.5

  • Article
    • | |
  • Metrics
    • |
  • Reference [23]
    • |
  • Related [20]
    • | | |
  • Comments
    Abstract:

    The effects of different casting moulds on the microstructures and mechanical properties of ZTC4 titanium alloy were studied. The effects of cooling rate, solidification rate and solidification time on the microstructures and mechanical properties of ZTC4 titanium alloy were studied by numerical simulation and experimental analysis.The results show that compared with the ceramic sample, the graphite sample has better heat dissipation effect, faster cooling speed and higher solidification speed, which makes the microstructure of the sample to be fine lath martensite alpha produced by quenching, with smaller grain size, more orientation and larger solidification thickness.The yield strength, tensile strength and hardness of the mechanical properties increased by 6.7%, 2.6% and 4.2% respectively, but the elongation and section shrinkage decreased by 37% and 34.5%, respectively. At the same time, different positions of the same mold have some influence on the cooling rate. The cooling rate at different positions of the sample is in the order of middle > bottom > top.

    Reference
    [1]Anthony R. McAndrew，Paul A. Colegrove，Clement Bühr , et al. A literature review of Ti-6Al-4V linear friction welding[J].Progress in Materials Science，2018,92：（225-257）
    [2]Liu X , Chu P K , Ding C . Surface modification of titanium, titanium alloys, and related materials for biomedical applications[J]. Materials Science and Engineering R: Reports, 2004, 47(3-4):49-121.
    [3]宁聪琴, 周玉. 医用钛合金的发展及研究现状[J]. 材料科学与工艺, 2002, 10(1):100-106.
    [4]Gorynin I V. Titanium alloys for marine application[J]. Materials Science & Engineering A, 1999, 263(2):112-116.
    [5]舒群, 郭永良, 陈子勇, et al. 铸造钛合金及其熔炼技术的发展现状[J]. 材料科学与工艺, 2004, 12(3):332-336.
    [6]王哲, 王新南, 商国强, et al. 新型超高强韧钛合金热变形行为研究[J]. 稀有金属材料与工程, 2018.
    [7]梁书锦, 侯峰起, 李英浩, et al. 航空紧固件用Ti45Nb合金丝材的组织和性能[J]. 稀有金属材料与工程, 2015(9):2203-2209.
    [8]冯芝华, 王红红, 谢成木,等. 热工艺对ZT4(Ti6-Al-4V)钛合金铸件残余应力的影响[J]. 航空材料学报, 2005, 25(3):25-27.
    [9]童第华, 吴学仁, 刘建中, et al. 基于小裂纹理论的铸造钛合金ZTC4疲劳寿命预测[J]. 材料工程, 2015, 43(6):60-65.
    [10]娄贯涛. 钛合金的研究应用现状及其发展方向[J]. 钛工业进展, 2003(2):9-13.
    [11]成小乐,周思君,符寒光,赵冰,白秉哲,牛勇.置氢改性钛合金扩散连接机理研究[J].西安交通大学学报,2019,53(03):111-116.
    [12]刘国怀, 李天瑞, 徐莽, et al. 累积叠轧TC4钛合金的组织演化与力学性能[J]. 金属学报, 2017(09):16-24.
    [13]Imayev V M , Gaisin R A , Imayev R M . Microstructure and mechanical properties of near α titanium alloy based composites prepared in situ by casting and subjected to multiple hot forging[J]. Journal of Alloys and Compounds, 2018, 762:555-564.
    [14]Feng X , Qiu J , Ma Y , et al. Influence of Processing Conditions on Microstructure and Mechanical Properties of Large Thin-Wall Centrifugal Ti–6Al–4V Casting[J]. 材料科学技术(英文版), 2016.
    [15]Bao C L , Zhang S Q , Ren Y Y , et al. Research progress on refractory composition and deformability of shell molds for TiAl alloy castings[J]. China Foundry, 2018, 15(1):1-10.
    [16]Hyun J J , Jaeho C , Byoung-Soo L , et al. Improvement of mechanical properties of cast pure titanium by repeated heat treatment[J]. Materials Science and Technology, 2018:1-5
    [17]Xu Q , Wang X , Guo Y G , et al. Filling mode and regularity of vertical centrifugal casting process of titanium alloy in thin-walled cylinder cavity[J]. China foundry, 2019, 16(2):105-109.
    [18]Wei Y M , Hu K H , Lu Z G . Effect of SiO 2, concentration in silica sol on interface reaction during titanium alloy investment casting[J]. China Foundry, 2018, 15(1):23-30.
    [19]Li C , Li M , Zhang H , et al. Fabrication of Y2O3 doped BaZrO3 coating on Al2O3 applied to solidification of titanium alloy[J]. Surface and Coatings Technology, 2017:S0257897217300907.
    [20] 赵军,张静,金磊,刘时兵,刘宏宇,张建中,游涛.涂层材料对钛合金机加工石墨型铸造工艺成形质量的影响[J].稀有金属材料与工程,2017,46(S1):190-194.
    [21] 张浩, 白瑀, 黄亮. 熔模铸造钛合金直齿面齿轮快速成形工艺[J]. 特种铸造及有色合金, 2018.
    [22]卢玉章, 申健, 郑伟, et al. 单晶铸件凝固过程工艺优化的数值模拟[J]. 材料工程, 2016, 44(11):1-8.
    [23]高义民，金属凝固原理[M].西安：西安交通大学出版社. 2010.134-139.
    Cited by
    Comments
    Comments
    分享到微博
    Submit
Get Citation

[宗学文,liu wenjie, gao zhongtang, xu wenbo, Gao qian, wang lei. Effect of Different Molds on Microstructure and Mechanical Properties of Titanium Alloys[J]. Rare Metal Materials and Engineering,2020,49(5):1681~1688.]
DOI：10.12442/j. issn.1002-185X.20190596

Copy
Article Metrics
  • Abstract:877
  • PDF: 1363
  • HTML: 144
  • Cited by: 0
History
  • Received:July 15,2019
  • Revised:September 10,2019
  • Adopted:October 11,2019
  • Online: June 05,2020

Total visitors：12686466

Address：96 weiyanglu, xi'an,Shaanxi, P.R.China Postcode：710016 ServiceTel：0086-26-86231117

E-mail：rmme@c-nin.com

Copyright:Rare Metal Materials and Engineering ® 2025 All Rights Reserved Support:Beijing E-Tiller Technology Development Co., Ltd. ICP: