Study on Hot Deformation Behavior of TC4 Titanium Alloy

被引：0
作者：
Lu, Yanling [1 ]
Jiao, Sihai [2 ]
Zhou, Xingtai [1 ]
Dong, Anping [3 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Appl Phys, Dept Nucl Mat Sci & Engn, Shanghai 201800, Peoples R China
[2] Baoshan Iron & Steel Co LTD, R&D Ctr, Met Proc Dept, Shanghai 201900, Peoples R China
[3] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China
来源：
TMS 2012 141ST ANNUAL MEETING & EXHIBITION - SUPPLEMENTAL PROCEEDINGS, VOL 1: MATERIALS PROCESSING AND INTERFACES | 2012年
关键词：
TC4 titanium alloy; Hot compression deformation; Flow stress; Constitutive equation; PLASTIC-FLOW; MICROSTRUCTURE; WORKING;
D O I：
暂无
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Hot compression deformation behavior of TC4 titanium alloy was studied on Thermecmaster-Z simulator in the temperature range 850 degrees C similar to 1150 degrees Cand strain rate range 0.5 s(-1)similar to 30s(-1). The results show that deformation temperature and strain rate both have significant influence on the flow stress. The flow stress decreases with the increase of deformation temperature, while increases with the increase of strain rate. The deformation mechanism of TC4 alloy exhibit dynamic recovery feature in high temperature. However, in lower temperature, dynamic recrystallization and grain boundary slip behavior may take place. Deformation activation energy values are 863.46 kJ/mol in (alpha + beta) phase region, and 209.80 kJ/mol in beta region respectively. Constitutive equations of TC4 alloy described by Zener-Hollomon parameter were formulated. Therefore, a scientific basis is provided for the reasonable choice of thermal parameters of TC4 titanium alloy.
引用
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页码：841 / 848
页数：8
相关论文
共 14 条
  • [1] [Anonymous], 1984, RARE METAL MAT PROCE
  • [2] Dyment F., 1980, TIT 80 SCI TECHN P 4, P510
  • [3] Fujii H., 1986, J IRON STEEL I JPN, V72, P299
  • [4] High temperature dynamic yielding in metastable Ti-6.8Mo-4.5Fe-1.5Al
    Philippart, I
    Rack, HJ
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 243 (1-2): : 196 - 200
  • [5] Poirier J P., 1989, HIGH TEMPERATURE PLA, P24
  • [6] ON MECHANISM OF HOT DEFORMATION
    SELLARS, CM
    MCTEGART, WJ
    [J]. ACTA METALLURGICA, 1966, 14 (09): : 1136 - &
  • [7] The effect of alpha platelet thickness on plastic flow during hot working of Ti-6Al-4V with a transformed microstructure
    Semiatin, SL
    Bieler, TR
    [J]. ACTA MATERIALIA, 2001, 49 (17) : 3565 - 3573
  • [8] Seshacharyulu T., 1999, MAT SCI ENG A-STRUCT, V263, P272
  • [9] Wang Jinyou, 1985, TITANIUM ALLOY USED
  • [10] Hot working behavior of near-α alloy IMI834
    Wanjara, P
    Jahazi, M
    Monajati, H
    Yue, S
    Immarigeon, JP
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 396 (1-2): : 50 - 60
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