Qi Cheng

Recent advances in post-processing technologies for laser additive manufacturing

Zichen Ma, Qi Cheng, Huijie Zhang, Xuegang Zhang et autres

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Microstructural evolution mechanisms and microhardness of high-strength steel fabricated by underwater local dry laser cladding

Qi Cheng, Huijie Zhang, Z Q Zhang, Ning Guo et autres

In this work, the effects of overlap ratio and laser power on the formation quality of underwater local dry laser cladding were investigated, and an optimized processing window was established. Based on the optimized parameters, the effect of thermal cycles on microstructural …

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Effects of tempering temperature on microstructure evolution and mechanical properties of high-strength low-alloy steel prepared by underwater laser melting deposition

Qi Cheng, Huijie Zhang, Ning Guo, Wenjing Chen et autres

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Improving Photovoltaic Power Forecasting Accuracy by Integrating Aerosol Optical Features: A Dual-Channel Deep Learning Approach

Ting Yang, Butian Chen, Qi Cheng, Bo Miao et autres

This paper proposes a short-term photovoltaic (PV) power prediction method that integrates aerosol optical feature mining with a dual-channel attention mechanism to address the complex non-linear attenuation effects of atmospheric aerosols and the limitations of existing models in handling sudden meteorological changes …

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First-principles investigation of vanadium-modified carbidic austempered ductile iron

Yan Hu, Hengchao Zhou, Qi Cheng, Jing Dai et autres

Abstract This study employs first-principles calculations to investigate the atomic-scale mechanisms underlying vanadium (V) modification of (Fe, Cr) 3 C carbide within carbidic austempered ductile iron (CADI). Crystal models of VC and (Fe, Cr) 3 C were constructed, and their bulk properties …

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An Experimental Study on the Influence of CO2 Real-Time Contact on the Mechanical Properties of Shale

Xing Ye Guo, Xiao Sun, Jiren Tang, Feng Man Shen et autres

The influence of CO2 on the mechanical properties of shale is one of the key factors to consider for enhancing shale oil and gas exploitation and realizing CO2 geological storage. In this paper, triaxial mechanical experiments of rock under real-time contact with …

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Anomalous transport of colloidal goethite and plutonium in single granite fracture experiments: Modeling and evaluation

D. J. Liu, Qi Cheng, Hao Diao, Liuxing Huang et autres

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Dataset of high-strength steel fabricated by underwater laser melting deposition at a depth of 100 m

Qi Cheng

This dataset describes the microstructural characteristics and mechanical properties of high-strength steel fabricated by laser melting deposition at a water depth of 100 m.

Dataset of high-strength steel fabricated by underwater laser melting deposition at a depth of 100 m

Qi Cheng

This dataset describes the microstructural characteristics and mechanical properties of high-strength steel fabricated by laser melting deposition at a water depth of 100 m.

Study on the deformation mechanisms of gradient grains based on molecular dynamics

Liupeng Chen, Tong Wang, Feng Yang, Qi Cheng et autres

Abstract This study employs molecular dynamics simulations to compare the mechanical properties and deformation mechanisms of gradient nano-grained (GNG) Fe and uniform NG Fe. The results show that the maximum stress of GNG Fe (8.05 GPa) is significantly higher than that of …

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The impact of social activity on cardiovascular disease risk among middle-aged and older adults in China: a nationwide cohort study based on the CHARLS database

Yingting Wu, Qi Cheng, Haiyang Song, Sihan Wang et autres

Objective: This study aims to examine the relationship between social activity and the risk of cardiovascular disease (CVD) in middle-aged and older adults in China. Methods: We used data from the China Health and Retirement Longitudinal Study (CHARLS) collected between 2011 and …

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Effects of heat input on microstructure evolution and corrosion resistance of underwater laser cladding high-strength low-alloy steel coating

Qi Cheng, Ning Guo, Zhenyu Xue, Hao Chen et autres

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