Identification for the optimal working parameters of as-extruded 42CrMo high-strength steel from a large range of strain, strain rate and temperature

Quan, Guo-zheng; Zhao, Lei; Chen, Tao; Wang, Yang; Mao, Yuan-ping; Lv, Wen-quan; Zhou, Jie

doi:10.1016/j.msea.2012.01.062

Cited by 84 publications

(34 citation statements)

References 25 publications

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“…As depicted, the predicted stress values are in excellent agreement with the experimental data although there is a wide range of strain rates and temperatures. However, two different deviations between experimental data and predicted values are observed at the strain rates of 10 s -1 and the temperature of 1073 and 1123 K. The possible reason is that the initiation of deformation twinning in FCC metals can drop the flow stress [31].…”

Section: Verification Of the Modified Constitutive Relationmentioning

confidence: 89%

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

et al. 2016

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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.

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Section: Verification Of the Modified Constitutive Relationmentioning

confidence: 89%

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

et al. 2016

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“…Processing map is a method which can track the microstructural evolution mechanism intuitively and precisely. By using processing maps, Wang et al 6 characterized the hot workability of AA 7050 aluminum alloy and Quan et al 7 identified the optimal working parameters of as-extrude 42CrMo high-strength steel.…”

Section: Introductionmentioning

confidence: 99%

Identification for the Optimal Working Parameters of Ti-6Al-4V-0.1Ru Alloy in a Wide Deformation Condition Range by Processing Maps Based on DMM

et al. 2016

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The hot deformation behaviours of Ti-6Al-4V-0.1Ru alloy were investigated by isothermal hot compression tests in the temperature range of 1023-1423 K and strain rate range of 0.01-10 s -1 . The β transus was determined to be 1198 K by continuous heating method. The values of deformation activation energy Q at the strain of 0.3 were calculated to be 630.01 kJ/mol in dual-phase field and 331.75 kJ/mol in β-phase field. Moreover, the processing maps at the strain of 0.2, 0.4, 0.6 and 0.8 were developed based on dynamic materials model (DMM). To deeply understand the microstructure evolution mechanism during hot deformation processes and to verify the processing maps, the microstructures at different deformation conditions were observed. The stable microstructures (i.e. globularization, dynamic recovery (DRV) and β dynamic recrystallization (β-DRX)) and instable microstructures (i.e. lamellae kinking and flow localization) were obtained. To make it useful in the design of industrial hot working schedules for this material, a microstructural mechanism map was constructed on the basis of processing maps and microstructure observation.

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“…[28,29] proposed that the effect of strain on the workability of a 42CrMo steel and 7075 aluminum alloy is most significant. Lin et al [14,30] and Luo et al [31,32] also pointed out that the strain has a great effect on the processing map.…”

Section: Establishment Of Processing Mapmentioning

confidence: 99%

Hot deformation behavior and processing map of a new type Al-Zn-Mg-Er-Zr alloy

Wen

Huang

et al. 2016

Journal of Alloys and Compounds

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Identification for the optimal working parameters of as-extruded 42CrMo high-strength steel from a large range of strain, strain rate and temperature

Cited by 84 publications

References 25 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

Identification for the Optimal Working Parameters of Ti-6Al-4V-0.1Ru Alloy in a Wide Deformation Condition Range by Processing Maps Based on DMM

Hot deformation behavior and processing map of a new type Al-Zn-Mg-Er-Zr alloy

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