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623 results on '"Liu Zhanli"'

1. Analysis of the evolution law of oxide inclusions in U75V heavy rail steel during the LF–RH refining process

Author

Liu Hongbo, Xie Rongyuan, Li Min, Zhang Caidong, Yao Hongyong, Tian Zhiqiang, Yang Haibin, Liu Zhanli, Wang Qiang, and Kang Ju

Subjects
u75v heavy rail steel, lf → rh refining process, oxide inclusions, evolution law, inclusion automatic scanning, Technology, Chemical technology, TP1-1185, Chemicals: Manufacture, use, etc., TP200-248
Abstract

The number density, size and composition of inclusions in U75V heavy rail steel during ladle furnace (LF)–RH refining process were studied by an Aztec-Feature inclusion automatic software which equipped with a field emission microscope. The results showed that the MnO–SiO2–Al2O3-type inclusions were the main inclusions at LF start. The MnO–SiO2–Al2O3-type inclusions were transformed into the CaO–SiO2–Al2O3-type inclusions during the LF refining process because of the Ca and Al elements which were brought by ferroalloy. At the RH start stage, the main inclusions were CaO–SiO2–Al2O3-type inclusions with low melting temperature and CaO–MgO–Al2O3-type inclusions with high melting temperature in the sample. And, the CaO–MgO–Al2O3-type inclusions were obviously removed during RH vacuum treatment. The average compositions of CaO–SiO2–Al2O3-type inclusions had no obvious change from RH vacuum holding for 15 min, RH vacuum break to RH soft blowing.

Published
2023
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4. Adaptive Multi-modal Fusion Based Face Anti-spoofing with RGB-D Images

Author

Teng, Zhan, Fang, Wei, Liu, Zhanli, Chen, Lixi, Goos, Gerhard, Series Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Yu, Shiqi, editor, Jia, Wei, editor, Shu, Xiangbo, editor, Yuan, Xiaotong, editor, Gui, Jie, editor, Tang, Jinhui, editor, Shan, Caifeng, editor, and Liu, Qingshan, editor

Published
2025
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36. Predicting the flow stress and dominant yielding mechanisms: analytical models based on discrete dislocation plasticity

Author

Hu, Jianqiao, Song, Hengxu, Liu, Zhanli, Zhuang, Zhuo, Liu, Xiaoming, and Sandfeld, Stefan

Subjects
Condensed Matter - Materials Science, Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

Dislocations are the carriers of plasticity in crystalline materials. Their collective interaction behavior is dependent on the strain rate and sample size. In small specimens, details of the nucleation process are of particular importance. In the present work, discrete dislocation dynamics (DDD) simulations are performed to investigate the dominant yielding mechanisms in single crystalline copper pillars with diameters ranging from 100 to 800 nm. Based on our simulations with different strain rates and sample size, we observe a transition of the relevant nucleation mechanism from "dislocation multiplication" to "surface nucleation". Two physics-based analytical models are established to quantitatively predict this transition, showing a good agreement for different strain rates with our DDD simulation data and with available experimental data. Therefore, the proposed analytical models help to understand the interplay between different physical parameters and nucleation mechanisms and are well suitable to estimate the material strength for different material properties and under given loading conditions., Comment: 26 pages, 7 figures

Published
2020

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