PMID- 30813249
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20201001
IS  - 1996-1944 (Print)
IS  - 1996-1944 (Electronic)
IS  - 1996-1944 (Linking)
VI  - 12
IP  - 4
DP  - 2019 Feb 22
TI  - Strain-Rate-Dependent Tensile Response of Ti(-)5Al(-)2.5Sn Alloy.
LID - 10.3390/ma12040659 [doi]
LID - 659
AB  - This study is an experimental investigation on the tensile responses of 
      Ti(-)5Al(-)2.5Sn alloy over a wide range of strain rates. Uniaxial tension tests 
      within the rate range of 10(-3)(-)10(1) s(-1) are performed using a hydraulic driven 
      MTS810 machine and a moderate strain-rate testing system. The high-rate uniaxial 
      tension and tension recovery tests are conducted using a split-Hopkinson tension 
      bar to obtain the adiabatic and isothermal stress(-)strain responses of the alloy 
      under dynamic loading conditions. The experimental results show that the value of 
      the initial yield stress increases with the increasing strain rate, while the 
      strain rate sensitivity is greater at high strain rates. The isothermal 
      strain-hardening behavior changes little with the strain rate, and the adiabatic 
      temperature rise is the main reason for the reduction of the strain-hardening 
      rate during high strain-rate tension. The electron backscatter diffraction (EBSD) 
      analysis of the post-deformed samples indicates that there are deformation twins 
      under quasi-static and high-rate tensile loadings. Scanning electron microscope 
      (SEM) micrographs of the fracture surfaces of the post-deformed samples show 
      dimple-like features. The Zerilli(-)Armstrong model is modified to incorporate the 
      thermal-softening effect of the adiabatic temperature rise at high strain rates 
      and describe the tension responses of Ti(-)5Al(-)2.5Sn alloy over strain rates from 
      quasi-static to 1050 s(-1).
FAU - Zhang, Bin
AU  - Zhang B
AD  - CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of 
      Modern Mechanics, University of Science and Technology of China, Hefei 230027, 
      China. zhb1005@mail.ustc.edu.cn.
FAU - Wang, Jin
AU  - Wang J
AD  - CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of 
      Modern Mechanics, University of Science and Technology of China, Hefei 230027, 
      China. wj1995@mail.ustc.edu.cn.
FAU - Wang, Yang
AU  - Wang Y
AD  - CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of 
      Modern Mechanics, University of Science and Technology of China, Hefei 230027, 
      China. wyu@ustc.edu.cn.
FAU - Wang, Yu
AU  - Wang Y
AD  - CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of 
      Modern Mechanics, University of Science and Technology of China, Hefei 230027, 
      China. wyu@ustc.edu.cn.
FAU - Li, Ziran
AU  - Li Z
AD  - CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of 
      Modern Mechanics, University of Science and Technology of China, Hefei 230027, 
      China. lzr@ustc.edu.cn.
LA  - eng
GR  - 11872359/National Natural Science Foundation of China/
PT  - Journal Article
DEP - 20190222
PL  - Switzerland
TA  - Materials (Basel)
JT  - Materials (Basel, Switzerland)
JID - 101555929
PMC - PMC6416550
OTO - NOTNLM
OT  - Ti-5Al-2.5Sn alloy
OT  - constitutive model
OT  - strain rate
OT  - tension deformation and fracture
COIS- The authors declare no conflict of interest.
EDAT- 2019/03/01 06:00
MHDA- 2019/03/01 06:01
PMCR- 2019/02/22
CRDT- 2019/03/01 06:00
PHST- 2019/01/24 00:00 [received]
PHST- 2019/02/14 00:00 [revised]
PHST- 2019/02/20 00:00 [accepted]
PHST- 2019/03/01 06:00 [entrez]
PHST- 2019/03/01 06:00 [pubmed]
PHST- 2019/03/01 06:01 [medline]
PHST- 2019/02/22 00:00 [pmc-release]
AID - ma12040659 [pii]
AID - materials-12-00659 [pii]
AID - 10.3390/ma12040659 [doi]
PST - epublish
SO  - Materials (Basel). 2019 Feb 22;12(4):659. doi: 10.3390/ma12040659.