Effects of Ce Addition on High Temperature Deformation Behavior of Cu-Cr-Zr Alloys

Zhang, Yi; Tran, Hai T.; Chai, Zhe; Liu, Ping; Tian, Baohong

doi:10.1007/s11665-015-1693-9

Cited by 21 publications

(9 citation statements)

References 19 publications

(8 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ji et al 11 found that under the test condition the deformation activation energy of the Cu-0.36Cr-0.03Zr alloy was 432.6 kJ/mol, and an experimentally based constitutive model was developed to predict the flow stress of the alloy during high temperature deformation. Zhang et al 12 found that the addition of Ce can improve the Cu-Cr-Zr alloy deformation activation energy during hot deformation. However, relations between the important points of the flow stress curves and the critical conditions for DRX initiation during hot working need further attention.…”

Section: Introductionmentioning

confidence: 99%

Dynamic recrystallization model of the Cu–Cr–Zr–Ag alloy under hot deformation

et al. 2016

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Dynamic recrystallization model of the Cu–Cr–Zr–Ag alloy under hot deformation

et al. 2016

Self Cite

View full text Add to dashboard Cite

show abstract

“…Comparing the activation energy Q of the Cu-Cr-Zr with that in Ref. [10], the Q increased by 21% with the addition of Ce. The reason is that the Ce can fix dislocations at the grain boundary and maintain high dislocation density.…”

Section: Activation Energy and Constitutive Equationsmentioning

confidence: 83%

“…Many investigations of the alloys hot deformation processing have been carried out. Zhang et al [10] found that the addition of Ce can improve the deformation activation energy of the Cu- 0.4Cr-0.1Zr alloy during hot deformation. Ji et al [11] found that the activation energy of the Cu-0.36Cr-0.03Zr alloy was 432.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the Hot Deformation Behavior of Cu–Cr–Zr Alloy by Processing Maps

Zhang

Sun

Tian

et al. 2016

Acta Metall. Sin. (Engl. Lett.)

Self Cite

View full text Add to dashboard Cite

Hot deformation behavior of the Cu-Cr-Zr alloy was investigated using hot compressive tests in the temperature range of 650-850°C and strain rate range of 0.001-10 s -1 . The constitutive equation of the alloy based on the hyperbolic-sine equation was established to characterize the flow stress as a function of strain rate and deformation temperature. The critical conditions for the occurrence of dynamic recrystallization were determined based on the alloy strain hardening rate curves. Based on the dynamic material model, the processing maps at the strains of 0.3, 0.4 and 0.5 were obtained. When the true strain was 0.5, greater power dissipation efficiency was observed at 800-850°C and under 0.001-0.1 s -1 , with the peak efficiency of 47%. The evolution of DRX microstructure strongly depends on the deformation temperature and the strain rate. Based on the processing maps and microstructure evolution, the optimal hot working conditions for the Cu-Cr-Zr alloy are in the temperature range of 800-850°C and the strain rate range of 0.001-0.1 s -1 .

show abstract

“…Zhang et al [11] researched the aging behavior of the Cu-0.4Cr-0.15Zr-0.05Ce (wt%) alloy and obtained a hardness of 183 HV with electrical conductivity reaching up to 83% IACS. [23] However, these studies are limited to aging precipitation behavior, and very few literature reports of the RE studies focus on hot deformation behavior. In general, this Cu-Zr alloy has high strength, high softening temperature, and perfect wear performance.…”

Section: Introductionmentioning

confidence: 99%

Small Y Addition Effects on Hot Deformation Behavior of Copper‐Matrix Alloys

et al. 2017

Self Cite

View full text Add to dashboard Cite

Hot deformation behavior of two alloys, Cu-Zr and Cu-Zr-Y is studied by compression tests using the Gleeble-1500D thermo-mechanical simulator. Experiments are conducted at 550-900 C temperature and 0.001-10 s À1 strain rate. The true stress-true strain curves are analyzed, and the results show that the flow stress strongly depends on the temperature and the strain rate. Furthermore, both alloys behave similarly when the flow stress increases with higher strain rate and lower temperature. Based on the dynamic material model, the processing maps are obtained at strains of 0.4 and 0.5. The optimal processing parameters for the Cu-Zr and Cu-Zr-Y alloys are determined. In addition, the constitutive equations for the alloys are established to characterize the flow stress as a function of strain rate and deformation temperature. Based on the microstructure evolution analysis, the results show that the addition of Y can effectively promote dynamic recrystallization. Moreover, the processability of the alloy can be optimized. Thermal deformation activation energy and the peak power dissipation efficiency for the alloys are obtained. It is observed that the addition of Y effectively improves thermal deformation activation energy and has considerable influence on the peak power dissipation efficiency.

show abstract

Effects of Ce Addition on High Temperature Deformation Behavior of Cu-Cr-Zr Alloys

Cited by 21 publications

References 19 publications

Dynamic recrystallization model of the Cu–Cr–Zr–Ag alloy under hot deformation

Dynamic recrystallization model of the Cu–Cr–Zr–Ag alloy under hot deformation

Characterization of the Hot Deformation Behavior of Cu–Cr–Zr Alloy by Processing Maps

Small Y Addition Effects on Hot Deformation Behavior of Copper‐Matrix Alloys

Contact Info

Product

Resources

About