Processing map and hot working mechanisms of Cu-Ag alloy in hot compression process

Wang, Menghan; Huang, Long; Chen, Mingliang; Wang, Yanli

doi:10.1007/s11771-015-2588-5

Cited by 22 publications

(8 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…And it is worth noting that the r and e in Eq. (15) are lesser than r c and e c , respectively ðr\r c ; e\e c . The coefficient of dynamic recovery (x) is worked out as follows: lnx ¼ À0:22046lnZ þ 12:90046 ð16Þ Figure 10 depicts a simple fitting function.…”

Section: Work Hardening-dynamic Recovery Modelmentioning

confidence: 94%

See 1 more Smart Citation

Hot compression deformation behavior and a modified physically-based constitutive model of Cu-6 %Ag alloy

et al. 2016

View full text Add to dashboard Cite

In order to reveal the flow characteristics of Cu-6 %Ag alloy on the condition of hot deformation, the isothermal compression experiments are carried out at the temperatures of 973-1123 K under strain rates of 0.01-10 s -1 . The effects of deformation condition on the hot compression deformation behavior are investigated. The low instability strain (e i ) behavior at high strain rate (10 s -1 ) is discussed in this paper. According to the experiment results and analyses, the deformation twinning and inhomogeneous grains are thought to be the possible reasons for low strain cracking. Then, a modified physically based constitutive model is established. The strain for maximum softening rate ðe Ã Þ is quoted in the constitutive equation which is proved that there is a nearly linear relationship between lne Ã and lnZ. What's more, the correlation coefficient (R) and the average absolute relative error (AARE) are used to evaluate the accuracy of the established constitutive model. The values of R and AARE are 0.99612 and 3.47 %, respectively, which show that the modified constitutive model can exactly reveal the flow stress of Cu-6 %Ag alloy.

show abstract

Section: Work Hardening-dynamic Recovery Modelmentioning

confidence: 94%

“…However, it is easy to crack during high temperature deformation [15]. Accordingly, the objective of this paper is to investigate the effect of deformation parameters on the hot deformation characteristics of Cu-Ag alloy by isothermal compression experiments.…”

Section: Introductionmentioning

confidence: 99%

Hot compression deformation behavior and a modified physically-based constitutive model of Cu-6 %Ag alloy

et al. 2016

View full text Add to dashboard Cite

show abstract

“…This can affect the micro-hardness of the alloy, so the micro-hardness increases slowly. When the temperature is 673 K, the diffusion rate for all elements in the alloy and the precipitation of the second phase is slow, causing unobvious strengthening effect [19]. When the temperature is 773 K, the saturation of the alloy will be destroyed, and the precipitation power of the second phase will be insufficient.…”

Section: Effect Of Aging On Properties Of Alloymentioning

confidence: 99%

“…Cu-Ag-Cr alloy as an extremely important Cu-based alloy with obvious aging strengthening effect and good comprehensive mechanical properties [19][20][21][22][23][24][25][26][27][28], is known as a "pearl" because of its widely application in electrified railway contact lines, high fidelity video, and audio lines. When Ag and Cr are used as nanoscale precipitates of copper alloy, what is the effect on the properties of the alloy.…”

Section: Introductionmentioning

confidence: 99%

Effect of aging on properties and nanoscale precipitates of Cu-Ag-Cr alloy

Zhou

Song

Hui

et al. 2020

Nanotechnology Reviews

View full text Add to dashboard Cite

AbstractIn this paper, the Cu-0.52Ag-0.22Cr alloy was prepared by hot horizontal continuous casting. The effects of aging process on micro-hardness, electrical conductivity, and nanoscale precipitates of Cu-0.52Ag-0.22Cr alloy were studied. The electrical conductivity and micro-hardness increase significantly in the early aging time. With the extension of aging time, the electrical conductivity is basically unchanged and remains at a high level. While, the micro-hardness increases slowly, the change trend is different at 623 K, 723 K, and 773 K. The optimisation of process parameters occurs in 723 K for 2 h. At this time, the electric conductivity is 95.8% IACS and the hardness is 104.1 HV0.1. The XRD result shows that the Ag and Cr are precipitated in elemental form copper matrix. Further TEM shows that, Cr exists at the sub-boundary in the form of larger nanoscale precipitates (100-200 nm). While a large number of Ag nanoscale precipitates (8-10 nm) is dispersed on the copper matrix. The synergistic effect of Ag and Cr nanoscale precipitates significantly improved the properties of the alloy.

show abstract

“…On the other hand, the safe processes may become less efficient, because power dissipates through the annihilation of dislocations (Banerjee, Robi, and Srinivasan, 2012). In recent investigations, the constitutive equation and processing map have been proposed for steel (Churyumov et al, 2015;Guo et al, 2012), Al-based alloys , Ni-based alloys (Chen et al, 2015), Ti-based alloys (Quan et al, 2015), composite materials (Momeni, Dehghanib, and Poletti, 2013;Rajamuthamilselvan and Ramanathans, 2012) and other materials (Wang et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Characterization of hot deformation behaviour of Nb-Ti microalloyed high-strength steel

Zhang

2019

J. S. Afr. Inst. Min. Metall.

View full text Add to dashboard Cite

The hot deformation behaviour of Nb-Ti microalloyed high-strength steel was investigated. Hot compression tests were conducted in the temperature range 900 to 1100°C under strain rates of 0.1, 1, and 5 s-1. Dynamic recrystallization (DRX) occurs as the main flow softening mechanism at high temperature and low strain rate. The hot deformation activation energy was calculated to be about 404 699 J/mol. The constitutive equation was developed to describe the relationship between peak stress, strain rate, and deformation temperature. The characteristics of DRX at different deformation conditions were extracted from the stressstrain curves using the work hardening parameter. The Cingara-McQueen equation was developed to predict the flow curves up to the peak strain. The processing maps were obtained on the basis of a dynamic materials model. The results predict an instability region in the temperature range 1010 to 1100°C when the strain rate exceeds 0.78 s-1 .

show abstract

Processing map and hot working mechanisms of Cu-Ag alloy in hot compression process

Cited by 22 publications

References 29 publications

Hot compression deformation behavior and a modified physically-based constitutive model of Cu-6 %Ag alloy

Hot compression deformation behavior and a modified physically-based constitutive model of Cu-6 %Ag alloy

Effect of aging on properties and nanoscale precipitates of Cu-Ag-Cr alloy

Characterization of hot deformation behaviour of Nb-Ti microalloyed high-strength steel

Contact Info

Product

Resources

About