Hu Chen
Tsinghua University
7 Papers
Hu Chen is an academic researcher from Tsinghua University. The author has contributed to research in topics: Pearlite & Cementite. The author has an hindex of 6, co-authored 7 publications. Previous affiliations of Hu Chen include Mississippi State University.
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Papers
Microstructure evolution of a hypereutectoid pearlite steel under rolling-sliding contact loading
TL;DR: In this paper, the microstructure evolution on the rolling surface of GCr15 steel subjected to rolling-sliding and pure rolling contact loading was systematically investigated, and it was found that the pearlite structure of the surface layer in the rollingsliding sample transformed into nanocrystalline α-Fe-C alloy in which cementite underwent severe decomposition while the pearllite lamellae appeared unperturbed in the pure rolling sample.
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Influence of laser processing strategy and remelting on surface structure and porosity development during selective laser melting of a metallic material
Chunlei Qiu,Chunlei Qiu,Zhuo Wang,Aiman Salim Aladawi,Mohammed Al Kindi,Issa Al Hatmi,Hu Chen,Hu Chen,Lei Chen +8 more
TL;DR: In this paper, the porosity distribution and surface structures of the as-fabricated samples were characterized using optical microscopy and scanning electron microscopy, which combined with a mathematical modeling of the selective laser melting process aims to understand the formation mechanism of pores in newly built layer and the role of remelting of previous layers on internal porosity development.
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A two-set order parameters phase-field modeling of crack deflection/penetration in a heterogeneous microstructure
Hu Chen,Hu Chen,Chi Zhang,Qianli Lu,Qianli Lu,Hao Chen,Zhigang Yang,Youhai Wen,Shenyang Y. Hu,Lei Chen +9 more
TL;DR: In this paper, a phase-field model with two-set order parameters describing the crack field and the microstructure field was proposed to investigate the competition between crack penetration and deflection at an interface.
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Understanding cementite dissolution in pearlitic steels subjected to rolling-sliding contact loading: A combined experimental and theoretical study
Hu Chen,Hu Chen,Yanzhou Ji,Chi Zhang,Wenbo Liu,Hao Chen,Zhigang Yang,Long Qing Chen,Lei Chen +8 more
TL;DR: In this paper, an elasto-plastic phase-field model, incorporating the elastic strain-induced free energy contribution from first-principles calculations and the plastic counterpart from a rolling-sliding contact finite element model assisted with a plastic strain accumulation model, is originally proposed to simulate the real-time evolution of cementite volume fraction, cementite morphology and carbon distribution for different rolling cycles and contact depths.
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Microstructural Evolution of a Hypoeutectoid Pearlite Steel under Rolling-sliding Contact Loading
TL;DR: In this article, a hypoeutectoid pearlite steel with composition and microstructure similar to BS11 was designed and twin-disc tests of this steel were performed to simulate the wheel/rail system.
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