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| 1 | Effect of mold rotation on inclusion distribution in bearing steel during electroslag remelting process显示文摘To remove the inclusions in the ingots by conventional electroslag remelting(ESR), the bearing steel was prepared using ESR process but with mold rotation in this study. Experimental results show a reduction in amount of large inclusions when the mold rotation rate is 6 r·min-1, and the inclusions are uniformly distributed in the ESR ingot. As comparison with the electroslag ingots of conventional ESR(stationary mold), the portion of the Al2O3 inclusions smaller than 1 μm in size increase from 38% to 41.4%, whereas that of the SiO2 inclusions increases from 48% to 74% in the ingots when mold rotation is applied. This phenomenon is caused by the decrease in metal droplet size, resulting in large contact area between the slag pool and metal droplets in ESR process with mold rotation. Moreover, the metal droplets have relatively long movement routes, leading to long metal contact time between the slag pool and metal droplets when a relative motion between the consumable electrodes and mold is present. However, when the mold rotation rate is increased to 45 r·min-1, inclusion removing effect decreases. An excessive rotation rate causes wild motion in the slag pool, which drives the molten metal droplets to move violently, and as a result, the slag is entrapped into the metal pool, decreasing the ability of slag absorbing inclusions. | Chang Lizhong Shi Xiaofang Wang Runxi Cong Junqiang Li Tao | 2014 | China Foundry2014，11，5： | 2 |
| 2 | Deformation mechanisms in aβ-quenched Ti-5321 alloy:In-situ investigation related to slip activity,orientation evolution and stress induced martensite显示文摘The deformation behavior ofβ-quenched nearβTi-5321(Ti-5Al-3Mo-3V-2Cr-2Zr-1Nb-1Fe)alloy was systematically studied using in-situ tensile test monitored by the scanning electron microscopy(SEM).Besides,the electron backscatter diffraction(EBSD)was performed to thoroughly discuss the deformation mechanisms.The results indicated that slip activities,crystal rotation and stress induced martensite transformation were the major deformation mechanisms in theβ-quenched Ti-5321 alloy during in-situ tensile testing.The slip activities were investigated by using the EBSD-trace analysis,which demonstrated that{110}<111>,{112}<111>and{123}<111>slip systems were activated and the{110}<111>slip system dominated.Besides,βgrains rotated about 7.8°to accommodate the increased macrostrain.Notably,the stress induced martensiteα″which was related to the double yielding behavior during tensile process exhibited multiple characteristics.The differentα″variants divided theβmatrix into smallerβblocks with a typical zigzag morphology,in which oneα″variant passed through another one by deflecting its initial growth direction.Moreover,the deformation twinning in martensiteα″and slip bands cutting through martensiteα″effectively accommodated the local strain.These systematically analysis can provide insightful information about the deformation mechanisms in nearβtitanium alloys. | Cong Wu Qinyang Zhao Shixing Huang Yongqing Zhao Lei Lei Junqiang Ren Qiaoyan Sun Lian Zhou | 2022 | Journal of Materials Science & Technology2022，，17： | 2 |
| 3 | A 320 Gb/s capacity (32 users×10 Gb/s) SPECTS O-CDMA network testbed with enhanced spectral efficiency through forward error correction显示文摘 | Hernandez V J Cong Wei Hu Junqiang | 2007 | Journal of Lightwave Technology2007，25，1： | 1 |
| 4 | Stacking monolayers at will:A scalable device optimization strategy for two-dimensional semiconductors显示文摘In comparison to monolayer(1L),multilayer(ML)two-dimensional(2D)semiconducting transition metal dichalcogenides(TMDs)exhibit more application potential for electronic and optoelectronic devices due to their improved current carrying capability,higher mobility,and broader spectral response.However,the investigation of devices based on wafer-scale ML-TMDs is still restricted by the synthesis of uniform and high-quality ML films.In this work,we propose a strategy of stacking MoS_(2) monolayers via a vacuum transfer method,by which one could obtain wafer-scale high-quality MoS_(2) films with the desired number of layers at will.The optical characteristics of these stacked ML-MoS_(2) films(>2L)indicate a weak interlayer coupling.The stacked MLMoS_(2) phototransistors show improved optoelectrical performances and a broader spectral response(approximately 300-1,000 nm)than that of 1L-MoS_(2).Additionally,the dual-gate ML-MoS_(2) transistors enable enhanced electrostatic control over the stacked ML-MoS_(2) channel,and the 3L and 4L thicknesses exhibit the optimal device performances according to the turning point of the current on/off ratio and the subthreshold swing. | Xiaojiao Guo Honglei Chen Jihong Bian Fuyou Liao Jingyi Ma Simeng Zhang Xinzhi Zhang Junqiang Zhu Chen Luo Zijian Zhang Lingyi Zong Yin Xia Chuming Sheng Zihan Xu Saifei Gou Xinyu Wang Peng Gong Liwei Liu Xixi Jiang Zhenghua An Chunxiao Cong Zhijun Qiu Xing Wu Peng Zhou Xinyu Chen Ling Tong Wenzhong Bao | 2022 | Nano Research2022，15，7： | 0 |
| 5 | Competition mechanism of multiple four-wave mixing in highly nonlinear fiber: spatial instability and satellite characteristics显示文摘在多重四波浪的混合的比赛机制(MFWM ) 过程理论上被表明。如果考虑仅仅注入高度非线性的纤维(HNLF ) 的二个波浪,有三个模式,显示全面动态行为,例如固定的点,周期的运动,和混乱运动。特别, MFWM 的模式 C 被分析它的阶段空间轨道表明非线性的波浪波浪相互作用强调。学习证明当阶段空间轨道接近或打通一个僵绳点时,为注射波浪的戏剧的力量弄空能被认识到,与混乱移动的代表性的点,但是当阶段空间轨道在一个中心附近是分布式的时,指,为注射波浪的力量被保留几乎不变,与周期性地移动的代表性的点。最后,在光纤维上的卫星波浪的发展被在幼仔双裂缝实验把它与干扰模式作比较调查。 | Liang ZHAO Junqiang SUN Xinliang ZHANG Cong CHEN | 2012 | Frontiers of Optoelectronics2012，5，4： | 0 |
| 6 | Molecular interactions induced collapse of charge density wave quantum states in 2H tantalum disulfide nanosheets显示文摘2H-tantalum disulfide(2H-TaS_(2))is a layered metallic transition metal dichalcogenide(TMD)that has recently been studied from the perspective of new physics phenomena,including simultaneous lattice distortion and charge density modulation known as the charge density wave(CDW)phase.Here we explored the collapse of CDW states in few-layer 2H-TaS_(2)induced by molecular interactions using Raman spectroscopy.Our results indicate that the CDW states disappear in few-layer 2H-TaS_(2)with rhodamine 6G(R6G)adsorbed due to the charge transfer,which is reflected by the change of behaviors of lattice vibrational modes in 2HTaS_(2).We observed the 2-phonon mode that signifies the CDW formation in 2H-TaS_(2),becomes a phonon-hardened mode when R6G molecules are absorbed on its surface.R6G adsorption further induces the breakdown of the Raman polarization selection rule in 2H-TaS_(2),which results in the alteration of the A_(1g)phonon mode polarization state of 2H-TaS_(2).This study can shed light not only on the underlying mechanisms of CDW states but also on controlling the CDW states under a variety of environmental conditions. | Borgea G.M.Ekoya Jinkun Han Junqiang Zhu Yabing Shan Ran Liu Laigui Hu Zhi-Jun Qiu Chunxiao Cong | 2023 | Nano Research2023，16，5： | 0 |
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