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| 1 | Influence of Rotational Speed on Microstructure and Mechanical Properties of Dissimilar Metal AISI 304-AISI 4140 Continuous Drive Friction Welds显示文摘Fundamental investigation of continuous drive friction welding of austenitic stainless steel (AISI 304) and low alloy steel (AISI 4140) is described. The emphasis is made on the influence of rotational speed on the microstructure and mechanical properties such as hardness, tensile strength, notch tensile strength and impact toughness of the dissimilar joints. Hardness profiles across the weld show the interface is harder than the respective parent metals. In general, maximum peak hardness is observed on the stainless steel side, while other peak hardness is on the low alloy steel side. A trough in hardness distribution in between the peaks is located on the low alloy steel side. Peak hardness on the stainless steel and low alloy steel side close to the interface increases with a decrease in rotational speed. All transverse tensile joints fractured on stainless steel side near the interface. Notch tensile strength and impact toughness increase with increase in rotational speed up to 1 500 r/min and decrease thereafter. The mechanism of influence of rotational speed for the observed trends is discussed in the torque, displacement characteristics, heat generation, microstructure, fractography and mechanical properties. | G Subhash Chander G Madhusudhan Reddy A Venugopal Rao | 2012 | Journal of Iron and Steel Research(International)2012，19，10： | 2 |
| 2 | Dynamic Fracture Toughness of Armour Grade Quenched and Tempered Steel Joints Fabricated Using Low Hydrogen Ferritic Fillers显示文摘The armour grade quenched and tempered steel joints fabricated using low hydrogen ferritic steel (LHF) filler exhibited superior joint efficiency owing to preferential ferrite microstructure in the welds and also they offered required resistance to HIC. However, the combat vehicles used in military operations will be required to operate under a wide range of road conditions ranging from first class to cross country. Structural components in combat vehicles are subjected to dynamic loading with high strain rates during operation. Stress loadings within the vehicle hull of these vehicles are expected to fluctuate considerably and structural cracking especially in welds during the service life of these vehicles can lead to catastrophic failures. Under these conditions, fracture behaviour of high strain rate sensitive structural steels can be better understood by dynamic fracture toughness (K1d). Hence, an attempt was made to study dynamic fracture toughness of the armour grade quenched and tempered steel and their welds fabricated using LHF consumables. The experimental results indicate that the K1d values of the joints fabricated by shielded metal arc welding (SMAW) are higher than those of the joints fabricated using flux cored arc welding (FCAW) process. | G Magudeeswaran V Balasubramanian S Sathyanarayanan G Madhusudhan Reddy A Moitra S Venugopal G Sasikala | 2010 | Journal of Iron and Steel Research(International)2010，17，5： | 2 |
| 3 | Microstructure and tensile properties of Inconel 718 pulsed Nd-YAG laser welds 显示文摘 | JANAKI RAM G D VENUGOPAL A PRASAD K | 2005 | Journal of Material Processing Technology2005，167，： | 1 |
| 4 | Proteomic profiling of high glucose primed monocytes identifies cyclophilin A as a potential secretory marker of inflammation in type 2 diabetes显示文摘 | Ramachandran S Venugopal A Sathisha K | 2012 | Proteomics2012，12，18： | 1 |
| 5 | Dyeing and antimicro- bial characteristics of chitosan treated wool fabrics with henna dye 显示文摘 | GIRl D V R VENUGOPAL J SUDHA S e! a/ | 2009 | Carbohydrate Polymers2009，75，： | 1 |
| 6 | Characterization of alkaline protease from Vibrio fluvialis strain VM10 isolated from a mangrove sediment sample and its application as a laundry detergent additive 显示文摘 | Meera Venugopal Saramma A V | 2006 | Process Biochemistry2006，41，： | 1 |
| 7 | Inhibition of TLR3 and TLR4 function and expression in human dendritic cells by helminth parasites显示文摘 | SEMNANI R T VENUGOPAL P G LEIFER C A | 2008 | Blood2008，112，4： | 1 |
| 8 | Influence of H2O and CO2 on the selective CO oxidation in H2-rich gases over Au/α-Fe2O3显示文摘 | Schubert M M Venugopal A Kahlich M J | 2004 | Journal of Catalysis2004，222，： | 1 |
| 9 | Growth of tool wear in turning of Ti6Al4V alloy under cryogenic coohng显示文摘 | K A Venugopal S Paul A B Chattopadhyay | 2007 | Wear2007，262，： | 1 |
| 10 | Spectroscopic parameters of Nd3+ ion in phosphate glass显示文摘 | Kumar G A Biju P R Venugopal C | 1997 | Journal of Non-Crystal Solid1997，221，： | 1 |
| 11 | Efficacy of two organotin compounds and neem extract against the sorghum shoot fly显示文摘 | Kareem A A Sadakathulla S Venugopal M S | | 0，，： | 1 |
| 12 | Numerical study of vortex shedding from a circular cylinder in linear shear flow显示文摘 | P VENUGOPAL and S P VANKA | 1999 | Journal of Fluids Engineering1999，121，： | 1 |
| 13 | Growth of tool wear in turning of Ti-6A1-4V alloy under cryogenic cooling显示文摘 | VENUGOPAL K A PAUL S CHATTOPADHYAY A B | 2007 | Wear2007，262，910： | 1 |
| 14 | Electrospun biomimetic nanocompositena nofibers of hydroxyapatite/ehitosan for bone tissue engineering显示文摘 | Zhang Y Venugopal J R EI - Turki A | 2008 | Biomaterials2008，29，32： | 1 |
| 15 | Production of ultra fine grain sizes in aluminium sheets by severe plastic deformation using the technique of groove pressing显示文摘 | KRISHNAIAH A CHAKKINGAL U VENUGOPAL P | 2005 | Scripta Materialia2005，52，12： | 1 |
| 16 | Zirconium-cobalt intermetallic compound for storage and recovery of hydrogen isotopes 显示文摘 | NAIK Y RAMA RAO G A VENUGOPAL V | 2001 | lntermetallics2001，9，4： | 1 |
| 17 | Applicability of the groove pressing technique for grain refinement in commercial purity copper显示文摘 | KRISHNAIAH A CHAKKINGAL U VENUGOPAL P | 2005 | Materials Science and Engineering A2005，，： | 1 |
| 18 | Low temperature reductive pretreatment of Au/Fe2 O3 catalysts, TPR/TPO studies and behaviour in the water-gas shift reaction 显示文摘 | Venugopal A Scurrell M S | 2004 | Appl Catal A: Gen2004，258，2： | 1 |
| 19 | Electrospun biomimetic nanocomposite nanofibers of hydroxyapatite/ chitosan for bone tissue engineering 显示文摘 | Zhang Y H Venugopal J R E1-Turki A | 2008 | Biomaterials2008，29，32： | 1 |
| 20 | Novel antimicrobial peptides that exhibit activity against select agents and oth er drug resistant bacteria显示文摘 | Venugopal D Klapper D Srouji A H | 2010 | Bioorg Med Chem2010，18，14： | 1 |
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