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| 1 | 应用本构模型和神经网络模型预测铝/镁基纳米复合材料的高温流变行为(英文)显示文摘为了预测Al/Mg基纳米复合材料的高温流变行为,在不同的应变速率(0.01-1.0s-)和温度(523,623和1723K)的条件下进行热压缩试验,利用所得到的应力-应变数据,开发了本构模型,比如一般流动方程。阿累尼乌斯双曲模型、Johnson-Cook(JC)和改性的Zerilli-Armstrong(ZA)模型及人工神经网络(ANN)模型。通过使用统计参数,例如均方根误差(RMSE)、回归系数(R2)、平均相对误差(MRE)和分散指数(Is),比较了人工神经网络和不同的本构模型。结果表明,人工神经网络模型对AA5083-2%TiC复合材料的热变形流动应力的评估准确性更高。 | V.SENTHILKUMAR A.BALAJI D.ARULKIRUBAKARAN | 2013 | 中国有色金属学会会刊:英文版2013，23，6： | 6 |
| 2 | Microstructure and corrosion behavior of NiTi shape memory alloys sintered in the SPS process显示文摘NiTi shape memory alloys(SMAs) was developed using the spark-plasma sintering(SPS) process with different average particle size(45 μm and 10 μm) under various temperature. The influence of particle size and temperature on the density, microstructure, and corrosion behavior of the NiTi in simulated body fluid was examined. The porosity decreased with increasing sintering temperature and decreasing particle size, which resulted in an increase in density of the alloy. Increasing the sintering temperature led to the formation of Ni-and Ti-rich intermetallic such as Ni3Ti and NiTi2. The formation of these secondary phases influenced the corrosion behavior of NiTi by changing its chemical composition. The planar structure of NiTi was transformed into a dendritic structure at 900℃, which resulted in the formation of uniform oxide and phosphate layers on the entire surface. A high corrosion potential and low corrosion current density were achieved with NiTi prepared with 10 μm particles at 900℃, which exhibited superior corrosion resistance. | C.Velmurugan V.Senthilkumar P.S.Kamala | 2019 | International Journal of Minerals,Metallurgy and Materials2019，26，10： | 3 |
| 3 | 热循环对锅炉管热喷涂Ni-Cr基纳米涂层的影响(英文)显示文摘采用机械球磨法制备Ni-Cr基纳米原料粉末。粉末颗粒在行星球磨机中反复经历焊合、碎裂和重焊合过程。采用超音速火焰喷涂工艺(HVOF)在碳钢管上喷涂球磨纳米粉末。利用金相显微镜、XRD、扫描电子显微镜(SEM),高分辨透射电子显微镜(HR-TEM)、能谱(EDS)和显微硬度测试对原料粉和HVOF喷涂涂层进行表征。对喷涂和未喷涂试样进行热循环分析,研究相、冶金性能和显微硬度的变化。与传统喷涂试样相比,Ni-Cr纳米涂层试样具有更高的力学和冶金性能。与传统涂层相比,纳米涂层的显微组织更均匀和紧密。 | V.SENTHILKUMAR B.THIYAGARAJAN M.DURAISELVAM K.KARTHICK | 2015 | Transactions of Nonferrous Metals Society of China2015，25，5： | 2 |
| 4 | Efect of Varying Dzyaloshinskii–Moriya Interaction on the Bistable Nano-Scale Soliton Switching显示文摘The efect of Dzyaloshinskii–Moriya(D-M) interaction on the bistable nano-scale soliton switching ofers the possiblity of developing a new innovative approach for data storage technology. The dynamics of Heisenberg ferromagnetic spin system is expressed in terms of generalized inhomogeneous higher order nonlinear Schro¨dinger(NLS) equation. The bistable soliton switching in the ferromagnetic medium is established by solving the associated coupled evolution equations for amplitude and velocity of the soliton using the fourth order Runge–Kutta method numerically. | L.Kavitha M.Saravanan V.Senthilkumar D.Gopi | 2013 | Communications in Theoretical Physics2013，60，12： | 0 |
| 5 | Effect of temperature and strain rate on compressive response of extruded magnesium nano-composite显示文摘The hot deformation behaviour of extruded magnesium-zinc oxide nano composite has been studied using hot compression test.The test was conducted in the temperature range of 250-400℃ and in the strain rate range of 0.01 to 1.5 s^(−1).The processing map was obtained using the power dissipation efficiency with the functions of temperature and strain rate.The workability and instability domains were observed in the processing map for a nano composite.The optical microscopy(OM),scanning electron microscopy(SEM)and transmission electron microscopy(TEM)images were used to confirm the formation of dynamic recrystallization(DRX),dynamic recovery(DRY)and instability regions.The workability region of the composite was identified at a working temperature of 400℃ and the strain rate of 0.01 s^(−1) from the processing map.The instability regions were observed at higher strain rates(>0.1 s^(−1))and temperatures(250-400℃). | B.Selvam P.Marimuthu R.Narayanasamy V.Senthilkumar K.S.Tun M.Gupta | 2015 | Journal of Magnesium and Alloys2015，3，3： | 0 |
| 6 | Microstructures and mechanical properties of nanocrystalline NiTi intermetallics formed by mechanosynthesis显示文摘The formulation of nanocrystalline NiTi shape memory alloys has potential effects in mechanical stimulation and medical implantology. The present work elucidates the effect of milling time on the product's structural characteristics, chemical composition, and microhardness for NiTi synthesized by mechanical alloying for different milling durations. Increasing the milling duration led to the formation of a nanocrystalline NiTi intermetallic at a higher level. The formation of nanocrystalline materials was directed through cold fusion, fracturing, and the development of a steady state, which were influenced by the accumulation of strain energy. In the morphological study, uninterrupted cold diffusion and fracturing were visualized using transmission electron microscopy. Particle size analysis revealed that the mean particle size was reduced to ~93 μm after 20 h of milling. The mechanical strength was enhanced by the formation of a nanocrystalline intermetallic phase at longer milling time, which was confirmed by the results of Vickers hardness analyses. | S.Arunkumar P.Kumaravel C.Velmurugan V.Senthilkumar | 2018 | International Journal of Minerals,Metallurgy and Materials2018，25，1： | 0 |
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