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| 1 | Comparison of TiAlN, AlCrN, and AlCrN/TiAlN coatings for cutting-tool applications显示文摘Monolayer and bilayer coatings of TiAlN, AlCrN, and AlCrN/TiAlN were deposited onto tungsten carbide inserts using the plasma enhanced physical vapor deposition process. The microstructures of the coatings were characterized using scanning electron microscopy(SEM) and atomic force microscopy(AFM). The SEM micrographs revealed that the AlCrN and AlCrN/TiAlN coatings were uniform and highly dense and contained only a limited number of microvoids. The TiAlN coating was non-uniform and highly porous and contained more micro droplets. The hardness and scratch resistance of the specimens were measured using a nanoindentation tester and scratch tester, respectively. Different phases formed in the coatings were analyzed by X-ray diffraction(XRD). The AlCrN/TiAlN coating exhibited a higher hardness(32.75 GPa), a higher Young's modulus(561.97 GPa), and superior scratch resistance(LCN = 46 N) compared to conventional coatings such as TiAlN, AlCrN, and TiN. | T.Sampath Kumar S.Balasivanandha Prabu Geetha Manivasagam K.A.Padmanabhan | 2014 | International Journal of Minerals,Metallurgy and Materials2014，21，8： | 8 |
| 2 | 材料模型对高温Ti-6Al-4V合金理论成形极限图预测的影响(英文)显示文摘成形极限图是一种用来描述使板材不发生局部颈缩所需最大主应变的重要图形。它是一种预测板材变形过程中变形极限的方便、有效的工具。本研究中,在400°C和不同样品宽度的条件,通过Nakazima实验得到了Ti-6Al-4V合金的成形极限图。此外,为了使用成形极限图对材料参数进行理论预测,提出了不同的各向异性屈服准则(Barlat 1989,Barlat 1996,Hill 1993)和不同的硬化模型(Hollomon幂定律、Johnson-Cook(JC)模型、改进的Zerilli-Armstrong(m-ZA)和Arrhenius(m-Arr)模型)。结合所提出的屈服准则和本构模型,通过Marciniak和Kuczynski(M-K)理论确定了Ti-6Al-4V合金的成形极限图。结果表明:屈服模型对材料成形极限图的影响大于本构模型的影响。然而,材料的厚度缺陷系数(f_0)与其硬化模型密切相关。Hill(1993)屈服准则最适合于成形极限图右边区域的预测,而Barlat(1989)屈服准最适合于成形极限图左边区域的预测。由于所得到的混合理论成形极限图兼具Barlat(1989)和Hill(1993)屈服模型和m-Arr硬化模型的优点,因此,它与实验得到的成形极限图吻合很好。 | Nitin KOTKUNDE Sashank SRINIVASAN Geetha KRISHNA Amit Kumar GUPTA Swadesh Kumar SINGH | 2016 | Transactions of Nonferrous Metals Society of China2016，26，3： | 2 |
| 3 | Effect of Dopants on Electron Localization Length in Polyaniline显示文摘 | P K Kahol K K Satheesh Kumar S Geetha | 2003 | Synthetic Metals2003，139，： | 1 |
| 4 | Tribological and electrical properties of nanocrystalline Cu films deposited by DC magnetron sputtering with varying temperature显示文摘 | M. Geetha N. Kumar K. Panda S. Dhara S. Dash B.K. Panigrahi A.K. Tyagi R. Jayavel V. Kamaraj | 2013 | Tribology International2013，，： | 1 |
| 5 | Osteosarcoma of the sella 显示文摘 | Geetha N Kumar A Ramachandran K | 1999 | Au stralas Radiol1999，43，4： | 1 |
| 6 | Freestanding conducting polyaniline film for the control of electromagnetic radiations 显示文摘 | SATHEESH KUMAR K K GEETHA S TRIVEDI D C | 2005 | Current Applied Physics2005，5，6： | 1 |
| 7 | Simple and rapid liquid chromatogramphy method for determination of moxifloxacin in plasma 显示文摘 | AKH Kumar Geetha R | 2009 | J Chro- matography B2009，877，： | 1 |
| 8 | EMI shielding: methods and materials: a review显示文摘 | GEETHA S KUMAR K K Satheesh RAO Chepuri R K | 2009 | Journal of Applied Polymer Science2009，112，4： | 1 |
| 9 | Osteosarcoma of the sella显示文摘 | KUMAR A RAMACHANDRAN K | 1999 | Australas Radiol1999，43，4： | 1 |
| 10 | Predicting the software performance during feasibil- ity study 显示文摘 | Evangelin Geetha D Suresh Kumar T V Rajani Kanth K | 2011 | Software IET2011，5，2： | 1 |
| 11 | Tribological and electrical properties of nanocrystalline Cu films deposited by DC magnetron sputtering with varying temperature 显示文摘 | GEETHA M KUMAR N PANDA K | 2013 | Tribol Int2013，58，2： | 1 |
| 12 | EMI Shielding: Methods and Materials-A Review显示文摘 | Geetha S Satheesh Kumar KK | 2009 | J Appl Polym Sci2009，112，4： | 1 |
| 13 | Synergetic effect of conducting polymer composites reinforced e-glass fabric for the control of electromagnetic radiations显示文摘 | GEETHA S KUMAR K K S MEENAKSHI S | | 0，，06： | 1 |
| 14 | Polyaniline Reinforced Conducting E-glass Fabric Using 4-chloro-3-methyl Phenol as Secondary Dopant for the Control of Electromagnetic Radiations显示文摘 | Geetha S Satheesh Kumar K.K Trivedi D.C | | 0，，06： | 1 |
| 15 | Multi- objective optimization for optimum tolerance synthesis with process and machine selection using a genetic algorithm显示文摘 | GEETHA K RAVINDRAN D KUMAR M S | 2013 | The International Journal of Advanced Manufacturing Tech- nology2013，67，9101112： | 1 |
| 16 | Simple and rapid method for simultaneous determination of isoniazid and acetyl isoniazid in urine by HPLC显示文摘 | Hemanth Kumar A K Sudha V Ramachandran Geetha | 2014 | Asian J Biomed Pharmaceut Sci2014，4，： | 1 |
| 17 | 显示文摘 | Kahol P K Satheesh Kumar K K Geetha S | 2003 | Synthetic Metals2003，139，： | 1 |
| 18 | Multi-objective opti- mization for optimum tolerance synthesis with process and ma- chine selection using a genetic algorithm 显示文摘 | Geetha K Ravindran D Kumar M S | 2013 | The International Journal of Advanced Manufacturing Technology2013，67，912： | 1 |
| 19 | EMIshielding methods and materials: a review 显示文摘 | GEETHA S KUMAR K K S RAO C R K | 2009 | Journal of Applied Polymer Science2009，112，： | 1 |
| 20 | Incidence and Management of Gastrointestinal Bleeding With Continuous Flow Assist Devices显示文摘 | Ashim Aggarwal Rojina Pant Shivani Kumar Priya Sharma Colleen Gallagher Antone J. Tatooles Pat S. Pappas Geetha Bhat | 2012 | The Annals of Thoracic Surgery2012，，： | 1 |
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