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Dive into the research topics where Hongying Sun is active.

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Featured researches published by Hongying Sun.


Journal of Iron and Steel Research International | 2014

Effect of Thermomechanical Parameters on Σ3n Grain Boundaries and Grain Boundary Networks of a New Superaustenitic Stainless Steel

Hongying Sun; Zhangjian Zhou; Man Wang; Xiao Li

Hot compression tests were conducted in a temperature range of 800 – 1100 °C and strain rate range of 0. 1 – 10 s−1 using a Gleeble 3500 thermomechanical simulator to investigate the influence of hot deformation parameters (temperatures, strain rates and strains) on the grain boundary network evolution of a new grade Fe-Cr-Ni superaustenitic stainless steel. The results showed that a dominant effect of deformed temperature is Σ3n (n=0, 1, 2, 3) boundaries population increased with decreasing temperature, while they first increased and then reduced with in-creasing strain and strain rate. Interestingly, besides Σ3n (n=0, 1, 2, 3) twin grain boundaries, some Σ1 boundaries could interrupt grain boundaries network effectively, which enhance material performances. But they are scarcely reported. The misorientation of some segments LAGBs in the deformed microstructure (pancaked grains) increased and slid to high angle grain boundaries with increasing the fraction of recrystallized grains during hot deformation.


Journal of Iron and Steel Research International | 2016

Effects of Solution Depletion and Segregation Oxidation on Morphology of Modified 310 Austenitic Stainless Steel

Hongying Sun; Qiang He; Zhangjian Zhou; Man Wang; Guangming Zhang; Shao-fu Li

The oxidation morphologies of modified 310 steel exposed in 900 and 1100 °C air were investigated. A double layer morphology consisting of a (Cr, Mn)-rich outer layer and a fine Cr-rich inner layer was formed at 900 °C. It was related to the breakaway oxidation induced by the Cr-depletion and the Mn-segregation in inner layer. Some Cr-rich oxides with amorphous state were formed along grain boundaries. And some new finer oxide grains, voids and Cr-rich precipitates were observed in spallation areas at 1100 °C. Correspondingly, the oxidation kinetic curve dropped with the spallation of scale and increased with the formation of some new oxide grains. It was caused by segregation of Cr and the transformation of oxides from Cr2O3 to the volatile oxides at elevated temperature. XRD analysis showed that the precipitates were mainly composed of CrO3. Segregation and depletion for solutions were also discussed by oxidation diffusion mechanisms.


Materials Science and Engineering A-structural Materials Properties Microstructure and Processing | 2013

Microstructural observation and tensile properties of ODS-304 austenitic steel

Man Wang; Zhangjian Zhou; Hongying Sun; Helong Hu; Shaofu Li


Materials & Design | 2015

Study on hot workability and optimization of process parameters of a modified 310 austenitic stainless steel using processing maps

Hongying Sun; Yongduo Sun; Ruiqian Zhang; Man Wang; Rui Tang; Zhangjian Zhou


Materials & Design | 2014

Hot deformation behavior and microstructural evolution of a modified 310 austenitic steel

Hongying Sun; Yongduo Sun; Ruiqian Zhang; Man Wang; Rui Tang; Zhangjian Zhou


Materials & Design | 2016

Long-term thermal-aging stability of a 16Cr-oxide dispersion strengthened ferritic steel at 973 K

Shun Li; Z.J. Zhou; P.H. Wang; Hongying Sun; M. Wang; Guangming Zhang


Journal of Nuclear Materials | 2012

Effects of plastic deformations on microstructure and mechanical properties of ODS-310 austenitic steel

Man Wang; Zhangjian Zhou; Hongying Sun; Helong Hu; Shaofu Li


Powder Technology | 2015

Structural evolution of oxide dispersion strengthened austenitic powders during mechanical alloying and subsequent consolidation

Man Wang; Hongying Sun; Lei Zou; Guangming Zhang; Shaofu Li; Zhangjian Zhou


Journal of Nuclear Materials | 2014

Hot deformation behavior and processing map of a 9Cr ferritic/martensitic ODS steel

Guangming Zhang; Zhangjian Zhou; Hongying Sun; Lei Zou; Man Wang; Shaofu Li


Journal of Nuclear Materials | 2014

The influence of Cr content on the mechanical properties of ODS ferritic steels

Shaofu Li; Zhangjian Zhou; Jinsung Jang; Man Wang; Helong Hu; Hongying Sun; Lei Zou; Guangming Zhang; Liwei Zhang

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Man Wang

University of Science and Technology Beijing

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Zhangjian Zhou

University of Science and Technology Beijing

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Guangming Zhang

University of Science and Technology Beijing

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Shaofu Li

University of Science and Technology Beijing

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Helong Hu

University of Science and Technology Beijing

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Lei Zou

University of Science and Technology Beijing

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Lefu Zhang

Shanghai Jiao Tong University

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Liwei Zhang

University of Science and Technology Beijing

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M. Wang

University of Science and Technology Beijing

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Shao-fu Li

University of Science and Technology Beijing

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