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22 results on '"Deng, Zhenqiang"'

4. Research on Sliding Mode Control of Underwater Vehicle-Manipulator System Based on an Exponential Approach Law

Author

Tang, Qirong, Hong, Yang, Deng, Zhenqiang, Jin, Daopeng, Li, Yinghao, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Tan, Ying, editor, Shi, Yuhui, editor, and Tuba, Milan, editor

Published
2020
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7. Optimal Shape Design of an Autonomous Underwater Vehicle Based on Gene Expression Programming

Author

Tang, Qirong, Li, Yinghao, Deng, Zhenqiang, Chen, Di, Guo, Ruiqin, Huang, Hai, Hutchison, David, Editorial Board Member, Kanade, Takeo, Editorial Board Member, Kittler, Josef, Editorial Board Member, Kleinberg, Jon M., Editorial Board Member, Mattern, Friedemann, Editorial Board Member, Mitchell, John C., Editorial Board Member, Naor, Moni, Editorial Board Member, Pandu Rangan, C., Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Terzopoulos, Demetri, Editorial Board Member, Tygar, Doug, Editorial Board Member, Weikum, Gerhard, Series Editor, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Tan, Ying, editor, Shi, Yuhui, editor, and Tang, Qirong, editor

Published
2018
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8. An Energy Minimized Solution for Solving Redundancy of Underwater Vehicle-Manipulator System Based on Genetic Algorithm

Author

Tang, Qirong, Liang, Le, Li, Yinghao, Deng, Zhenqiang, Guo, Yinan, Huang, Hai, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Tan, Ying, editor, Takagi, Hideyuki, editor, and Shi, Yuhui, editor

Published
2017
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14. Dynamic Recrystallization Kinetics of As-Cast Fe-Cr-Al-La Stainless Steel during Hot Deformation.

Author

Deng, Zhenqiang, Liu, Jianhua, Shao, Jian, and McLean, Alexander

Subjects
RECRYSTALLIZATION (Metallurgy), STAINLESS steel, STRAINS & stresses (Mechanics), STRESS-strain curves, STRAIN rate, STRAIN hardening
Abstract

To investigate the dynamic recrystallization (DRX) behavior of as-cast Fe-20Cr-5.5Al-0.64La stainless steel, a series of compression tests were carried out on a Gleeble-3500 thermal simulator in the temperature range of 1000~1150 °C and the strain rate range of 0.001~1 s−1. The true stress-true strain curves were obtained and their characteristics were analyzed. Using regression analysis, the apparent activation energy for the Fe-20Cr-5.5Al-0.64La stainless steel was estimated to be 300.19 kJ/mol, and the constitutive equation was developed successfully with a hyperbolic sine equation as: ε ˙ = e 21.91 sinh 0.035 σ 3.18 exp − 300190 R T . The critical strain, the peak strain and the strain for the maximum softening rate were identified based on the work hardening rate curves and expressed as a function of the Zener−Hollomon parameter. The kinetic model of DRX was established using the stress−strain data. According to the analysis of the kinetics model and microstructure evolution, the evolution of DRX volume could be described as follows: the volume fraction of DRX grains increased with an increase in strain; at a fixed deformation temperature, the DRX volume fraction was larger at a lower strain rate for the same strain; and the size of DRX grains increased with an increase in temperature or a decrease in strain rate. [ABSTRACT FROM AUTHOR]

Published
2023
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