Effect of strain rate on the tension behavior of Ti–6.6Al–3.3Mo–1.8Zr–0.29Si alloy at low temperatures
Effect of strain rate on the tension behavior of Ti–6.6Al–3.3Mo–1.8Zr–0.29Si alloy at low temperatures
复制标题
应变速率对Ti～6.6Al～3.3Mo～1.8Zr～0.29Si合金低温拉伸行为的影响
DOI：
10.1016/j.msea.2014.03.042
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发表时间：
2014-05
期刊：
影响因子：
6.4
通讯作者：
Yang Wang
中科院分区：
文献类型：
--
作者：
Jun Zhang;Yang Wang
研究了Ti-6.6Al-3.3Mo-1.8Zr-0.29Si在应变速率0.001 ~ 1150 s−1和初始温度213 ~ 293 K范围内的拉伸响应。采用分离式霍普金森拉伸杆技术进行了拉伸冲击和恢复试验，获得了合金在高应变速率下的绝热和等温应力-应变行为。实验结果表明，合金的拉伸行为与应变速率和温度有关。初始屈服应力随应变速率的增大和温度的降低而增大。在不同的应变速率和温度下，等温应变硬化行为变化不大。在高速变形过程中，绝热温升是导致应变硬化速率降低的主要原因。断口表面的扫描电镜观察表明，拉伸试样以韧性断裂的方式断裂。采用考虑热-力耦合效应的zerili - armstrong本构模型描述了Ti-6.6Al-3.3Mo-1.8Zr-0.29Si合金的速率和温度相关变形行为。在应变速率和温度的测试范围内，模型结果与实验数据非常接近。
The tension responses of Ti–6.6Al–3.3Mo–1.8Zr–0.29Si are investigated over a broad range of strain rates, 0.001–1150 s−1, and initial temperatures, 213–293 K. Tensile impact and recovery tests are carried out using the split Hopkinson tension bar technique to obtain the adiabatic and isothermal stress–strain behavior of the alloy at high strain rates. Experimental results indicate that the tension behavior of the alloy is dependent on the strain rate and temperature. The value of initial yield stress increases with increasing strain rate and decreasing temperature. The isothermal strain hardening behavior changes little at different strain rates and temperatures. The adiabatic temperature rise is the main reason for the reduction of strain hardening rate during the high-rate deformation process. SEM observations of the fracture surfaces indicate that the tension specimen is broken in a manner of ductile fracture. The Zerilli–Armstrong constitutive model incorporating the effect of thermal–mechanical coupling is used to describe the rate and temperature dependent deformation behavior of Ti–6.6Al–3.3Mo–1.8Zr–0.29Si alloy. The model results are very close to the experimental data within the tested range of strain rates and temperatures.
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DOI：
10.1007/s11661-003-0013-4
发表时间：
2003-11
期刊：
Metallurgical and Materials Transactions A
影响因子：
--
作者：
Dong-Geun Lee;Sunghak Lee;C. Lee;Sun-Moo Hur
通讯作者：
Dong-Geun Lee;Sunghak Lee;C. Lee;Sun-Moo Hur
DOI：
10.1007/bf02595644
发表时间：
1996-12
期刊：
Metallurgical and Materials Transactions A
影响因子：
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作者：
R. Reed-Hill;C. V. Iswaran;M. Kaufman
通讯作者：
R. Reed-Hill;C. V. Iswaran;M. Kaufman
DOI：
10.1016/j.msea.2010.05.039
发表时间：
2010-08-20
影响因子：
6.4
作者：
Prakash, D. G. Leo;Ding, R.;Preuss, M.
通讯作者：
Preuss, M.
DOI：
10.1007/bf02651653
发表时间：
1989-05-01
期刊：
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
影响因子：
--
作者：
FOLLANSBEE, PS;GRAY, GT
通讯作者：
GRAY, GT
影响因子：
9.4
作者：
Fundenberger, JJ;Philippe, MJ;Esling, C
通讯作者：
Esling, C