scholarly journals Effect of strain rate on cyclic deformation behavior of a beta phase containing TiAl alloy at elevated temperature

2012 ◽  
Author(s):  
Hongfu Xiang ◽  
Anlun Dai ◽  
Hui Li ◽  
Jiheng Wang ◽  
Jinghai Tao
Keyword(s):  
Elevated Temperature ◽  
Strain Rate ◽  
Cyclic Deformation ◽  
Deformation Behavior ◽  
Tial Alloy ◽  
Beta Phase

Cyclic Stress-Strain Response and Dislocation Configuration of a Beta Phase Containing TiAl Alloy during Isothermal Fatigue Tests under Different Strain Rate

2013 ◽  
Vol 683 ◽  
pp. 314-317
Author(s):  
Hong Fu Xiang ◽  
Jing Hai Tao ◽  
Ji Heng Wang ◽  
Hui Li ◽  
An Lun Dai
Keyword(s):  
Strain Rate ◽  
Tial Alloy ◽  
Beta Phase ◽  
Cyclic Stress ◽  
Strain Rates ◽  
Strain Response ◽  
Stress Strain ◽  
Aluminum Compound ◽  
Dislocation Configuration ◽  
Isothermal Fatigue

A beta phase containing titanium aluminum compound was prepared. Isothermal Fatigue(IF) were subjected at 650 °C at three strain rates, such as 6.67×10-3s-1, 6.67×10-4s-1, 6.67×10-5s-1to determine the effect of strain rate on cyclic stress-strain response (CSSR) of TiAl alloy during IF tests. The curves of cyclic stress-strain response were discussed and dislocations configuration were also observed by TEM. The results show that strain rates have an apparent effect on CSSR of TiAl alloy during IF tests and CSSR was identified that it had a close relationship with dislocation configuration and deformation twin.

Strain-Rate-Dependent Deformation Behavior of Carbon-Black-Filled Rubber under Monotonic and Cyclic Straining

2007 ◽  
Vol 340-341 ◽  
pp. 1017-1024 ◽  
Author(s):  
Yoshihiro Tomita ◽  
K. Azuma ◽  
M. Naito
Keyword(s):  
Strain Rate ◽  
Cyclic Deformation ◽  
Deformation Behavior ◽  
Viscoelastic Deformation ◽  
Rate Dependent ◽  
Filled Rubber ◽  
Deformation Behaviors ◽  
Deformation Processes ◽  
The Individual ◽  
Cyclic Straining

The constitutive equation of rubber is derived by employing a nonaffine molecular chain network model for an elastic deformation behavior and the reptation theory for a viscoelastic deformation behavior. The results reveal the roles of the individual springs and dashpot, and the strain rate dependence of materials and disentanglement of molecular chains in the monotonic and cyclic deformation behaviors, particularly softening and hysteresis loss, that is, the Mullins effect, occurring in stress-stretch curves under cyclic deformation processes.

Experimental Investigation of the Deformation Behavior of ABS Resin at Elevated Temperature and High Strain Rate

2008 ◽  
Vol 33-37 ◽  
pp. 1253-1258
Author(s):  
Z.N. Yin ◽  
X.S. Ma ◽  
Tie Jun Wang
Keyword(s):  
Elevated Temperature ◽  
High Strain Rate ◽  
Strain Rate ◽  
Deformation Behavior ◽  
High Strain ◽  
Split Hopkinson Pressure Bar ◽  
Acrylonitrile Butadiene Styrene ◽  
Constitutive Law ◽  
Hopkinson Pressure Bar ◽  
Abs Resin

Split Hopkinson Pressure Bar (SHPB) experiments are carried out to study the deformation behavior of acrylonitrile-butadiene-styrene (ABS) resin at elevated temperature and high strain rate. The temperature and strain rate considered are 293K and 343K and 8.0×102s-1, 2.7×103s-1 and 1.0×104s-1, respectively. The curves of engineering stress and strain at different temperatures and different strain rates are experimentally obtained. The effects of temperature, strain rate and the fraction of ABS on the deformation behavior of ABS resin are discussed in detail. Then, a rate and temperature dependent phenomenological constitutive law for ABS resin is developed.

Low Cycle Fatigue of 9-12% Cr Steel at Elevated Temperature: Cyclic Deformation Behavior and Life Assessment

2016 ◽  
Author(s):  
Peng Zhao ◽  
Fu-Zhen Xuan ◽  
De-Long Wu
Keyword(s):  
Fatigue Life ◽  
Elevated Temperature ◽  
Cyclic Deformation ◽  
Deformation Behavior ◽  
Fatigue Testing ◽  
Low Cycle Fatigue ◽  
Life Assessment ◽  
Control Mode ◽  
Cycle Fatigue ◽  
Wide Range

Fatigue testing for an important turbine rotor material (X12CrMoWVNbN10-1-1 steel) was carried out over a wide range of strain and stress amplitudes at 873K. Particular attention was paid to the effect of control mode on the cyclic deformation behavior and life assessment at elevated temperature. Two main domains were observed depending both on the strain and stress amplitudes, where the effect of control mode was different. In the micro plastic deformation domain, the cyclic softening is slight and there is no clear difference in fatigue behavior between the stress and strain modes. In the plastic damage regime, stress cycling causes more significant softening or damage than strain cycling. The dependence of damage behavior on the evolution of dislocation substructure was focused. On the other hand, it is not possible to use strain based life model to predict fatigue life with the test results under a different control mode. A unified energy-based model is proposed based upon the deformation mechanism and the experimental results, which can assess the low cycle fatigue life with different control modes. The results obtained in this study could have significant implications in the design of structures.

Effect of strain rate induced M23C6 distribution on cyclic deformation behavior: Cyclic hardening model

2020 ◽  
Vol 127 ◽  
pp. 102634 ◽  
Author(s):  
Haizhou Li ◽  
Hongyang Jing ◽  
Lianyong Xu ◽  
Yongdian Han ◽  
Lei Zhao ◽  
...  
Keyword(s):  
Strain Rate ◽  
Cyclic Deformation ◽  
Deformation Behavior ◽  
Cyclic Hardening ◽  
Hardening Model
Sign in / Sign up

Export Citation Format

Share Document