Ongoing Projects

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S.No. Number Start Date End Date Project Leader Category Type Core Area Sub Area
       
1NML/IPSG/2013/2014/14602013-10-012014-09-30V.RajinikanthR&DFull tenure(1 year)Materials EvaluationMicrostructural Characterisation

Title: Correlation of stereological parameters with mechanical properties of micro alloyed steels: Module I -Micro structural processing and quantification.

Abstract: Acicular ferrite (AF)/ bainite (B) is often reported as the most desirable microstructure for development of high strength pipeline grade micro alloyed steels. However the mechanism of its formation is explained mostly with respect to microstructure evolution from inclusions during welding and claims are being made that it is intragranular variant of bainite. There are no proper systematic investigations towards: (i) resolving the above claim and (ii) development of desired fractions of acicular ferrite in different micro structural combinations with other micro structural constituents like retained austenite, M-A, polygonal ferrite, martensite, bainite etc., in a thermo mechanical processing schedule. The objective of the proposed investigation is aimed at addressing the above two issues by employing stereological methods like serial sectioning, disector etc., to compare and contrast acicular ferrite and bainite and controlled processing using Gleeble thermo mechanical simulator to obtain desired microstructural combinations by optimizing processing condition. The desired outcome is the development of processing schedule to obtain varying fractions of AF/B for the microalloyed steel and its quantification

2NML/IPSG/2014/2015/960882014-10-012015-09-30V.RajinikanthR&DFull tenure(1 year)Materials EvaluationMicrostructural Characterisation

Title: Correlations of stereological parameters with mechanical properties of micro alloyed steels – Module II: Effect of thermomechanical processing parameters on acicular ferrite formation

Abstract: Acicular ferrite (AF)/ bainite (B) is often reported as the most desirable microstructure for development of high strength pipeline grade micro alloyed steels. However the mechanism of its formation is explained mostly with respect to microstructure evolution from inclusions during welding and claims are being made that it is intragranular variant of bainite. There are no proper systematic investigations towards: (i) resolving the above claim and (ii) development of desired fractions of acicular ferrite in different micro structural combinations with other micro structural constituents like retained austenite, M-A, polygonal ferrite, martensite, bainite etc., in a thermo mechanical processing schedule. It is also observed from the results of Module I- microstructural processing and quantification that the strained regions show predominantly acicular ferrite microstructure and strain free region shows bainite microstructure under the similar processing conditions. Therefore, the objective of the proposed investigation is aimed at studying the effect of applied strain on the formation of acicular ferrite microstructure. The Gleeble thermo mechanical simulator will be used to obtain different strain levels for the desired microstructure. The desired outcome is the understanding the mechanism of acicular ferrite formation due to applied strain and processing temperature.

3NML/IPSG/2015/2016/12015-10-012016-09-30Beena KuamriKnowledge ManagementFull tenure(1 year)R&D ManagementInformation Management

Title: Preparation and maintenance of CSIR-NML periodical records in electronic form through Inquest(e-reports) website. i.e. Development and implementation of an e-documentation system that may allow data acquisition, integration, repackaging and extraction of information in real time

Abstract: The progress of CSIR-NML in terms of the activities and achievements of CSIR-NML is being compiled, documented and sent to CSIR-HQS and various other stake holders e.g. Govt. Ministries at regular intervals. Also designing and compilation of the comprehensive information report of CSIR-NML is being carried out yearly. The current project proposes for the timelined creation of the aforementioned documents and maintaining all such records in electronic form. The proposed system shall enable: Multipoint entry/upload of data and information Item wise selection/integration of updated information into the form of institutional reports. Availability and extraction of these reports as and when required.

4NML/IPSG/2015/2016/22015-10-012016-09-30Ranjeet Kumar SinghR&DFull tenure(1 year)Mineral ProcessingBeneficiation

Title: Feasibility study of gravity based pneumatic separation of iron ore

Abstract: Wet Processing is a general practice for beneficiation of iron ore and coal. Although wet processing is efficient in beneficiation of iron ore and coal but it also introduces moisture to the level of 6-15%, which adds additional weight to transportation and adds drying cost. Rejects are in the form of slurry containing fines which cause environmental pollution. Dewatering of fines is also a costlier operation. Moreover, water may be scarce in many areas where processing plants are located. Dry beneficiation could be one of the alternate options which can address the above problems. Many studies have been carried out across the world on dry beneficiation of coal in laboratory and in some cases this is also being practiced in plant scale elsewhere in world but not in India. However, literature on dry-beneficiation of iron ore is very scanty. In view of the above, present work is being proposed to establish “the proof of concept for dry beneficiation of iron ore”. Since very limited work has been done on dry beneficiation of iron ore, it is worthwhile to evaluate the theoretical concept for dry beneficiation of iron ore using air fluidized separator. Theoretical study consists of estimation of minimum fluidization velocity for stratification of iron ore mineral, estimation of minimum vibration frequency needed for stratification, effect of design parameter on segregation mechanism and estimation of other design parameters through basic/first principle of mathematical formulation. Based on the developed theoretical concept, fabrication of a lab-scale air fluidized unit shall be undertaken. Separation efficiency of the developed unit shall also be estimated for iron ore. M N Dastur & Co.Ltd has shown interest on the proposed work in terms of some financial and technical support and for scaling up the unit if successful. The IP shall be shared between CSIR-NML and M N Dastur & Co. Ltd.

5NML/IPSG/2015/2016/719242015-04-012016-03-31Beena KuamriKnowledge ManagementFull tenure(1 year)R&D ManagementInformation Management

Title: Development of an e-management system for automation of ipsg project related activities of NML (MODULE 1).

Abstract: Development and implementation of an e-project management information system for the overall management of in-house (OLP) projects of NML. The system shall enable online processes for proposals, reviewing and monitoring and reporting of OLPs. The system shall be developed in two stages i.e. 1.1 User Profiles and Proposals, 1.2. Reviewing and Monitoring 2. Reporting and Data Analytics.

6NML/IPSG/2015/2016/976922015-10-012016-09-30V.RajinikanthR&DFull tenure(1 year)Materials EvaluationMicrostructural Characterisation

Title: Correlations of stereological parameters with mechanical properties of micro alloyed steels – Module III: Effect of phase fraction on mechanical properties.

Abstract: Acicular ferrite (AF)/ bainite (B) is often reported as the most desirable microstructure for development of high strength pipeline grade micro alloyed steels. However the mechanism of its formation is explained mostly with respect to microstructure evolution from inclusions during welding and claims are being made that it is intragranular variant of bainite. There are no proper systematic investigations towards: (i) resolving the above claim and (ii) development of desired fractions of acicular ferrite in different micro structural combinations with other micro structural constituents like retained austenite, M-A, polygonal ferrite, martensite, bainite etc., in a thermo mechanical processing schedule.. Therefore, the objective of the proposed investigation is aimed at obtaining varying fractions of acicular ferrite/bainite along with ferrite as a dual phase steel. The mechanical property of the varying microstructural fractions will be obtained by performing tensile testing and microhardness. The desired outcome is the effect of acicular ferrite/bainite fraction on the mechanical properties. The effect of strain on the acicular ferrite microstructure will be studied by processing for true strain upto ~1.2 and corresponding microstructural investigations by EBSD.

7NML/IPSG/2016/2016/152016-03-012016-08-31sivakumarR&DFast track(6 months)Surface EngineeringTribology

Title: Fretting corrosion behavior of borided Ti and 316SS in simulated body fluid

Abstract: Fretting corrosion is one of the several problems, observed in dental and load bearing bio implants. Medical grade alloys such as commercially pure titanium (CpTi) and stainless steel (316SS) are highly susceptible to fretting corrosion and leads to dissolution of metal ions, accumulation of wear debris near tissues and consequent harmful reactions. Surface coating by boriding is likely to improve the fretting corrosion behavior in simulated body fluid (SBF). In our previous module (III and IV), the boriding of CpTi and 316SS were investigated as function of different temperature and time. Coating characterizations and corrosion analysis were performed earlier. The present work is focused on the fretting corrosion behavior of borided CpTi and 316SS in SBF. Further the boriding kinetics would also be attempted. So far no such evaluation has been made on borided CpTi and 316SS to confirm their feasibility for bio implant application. [1] O. Ozdemir, M.A. Omar, M. Usta, S. Zeytin, C. Bindal, A.H. Ucisik, An investigation on boriding kinetics of AISI 316 stainless steel, Vacuum 83 (2009) 175–179 [2] I. O. zbek, B.A. Konduk, C. Bindal, A.H. Ucisi, Characterization of borided AISI 316L stainless steel implant, Vacuum 65 (2002) 521–525

8NML/IPSG/2016/2016/576662016-03-012016-08-31Yashabanta Narayan SinghabbuR&DFast track(6 months)Materials EngineeringAdvanced Materials (Structural, Bio, Magnetic) & P

Title: A Comparison study of the electrical and corrosion properties of graphene oxide synthesized from different carbon sources.

Abstract: Graphene, a single atomic 2D-sheet of bulk graphite, is considered to be the futuristic material due to its extra ordinary property such as, high electron mobility (2,00,000 cm2 V-1 s-1) at room temperature, high thermal conductivity (~5 x 105 Wm-1 K-1), excellent mechanical property (Young’s modulus ~ 1TPa) and impermeability to most of the chemical ions. In view, it finds enormous application in fields like energy, electronics, bio-medical, material and corrosion. Indeed we have focused on the electronic application of graphene by functionalization (Module-I), modulation of sheet morphology (Module-II) , its application as sensor (Module-III) and integration of graphene on cold rolled steel for corrosion protection (Module-IV). In this module we plan to finish some parts of the experiments that are left to complete the thesis and compile all the results for thesis. Therefore, we request for extension for six month to finish the thesis successfully.

9NML/IPSG/2016/2016/755132016-02-012016-06-24R&DFast track(6 months)Extractive MetallurgyHydrometallurgy

Title: SYNTHESIS, MODIFICATION AND APPLICATION OF NANO-STRUCTURED LEAD (II) OXIDE FROM SPENT AUTOMOBILE LEAD-ACID BATTERY

Abstract: This research work will be focusing on a novel synthesis, modification and application of nano structured lead II oxide from spent automobile lead acid battery. Three different organic acids, (Acetic acid, citric acid and formic acid), sodium peroxide, sodium bromide and ethylene di-amine tetra-acetic acid will be employed as precipitating agents in the study. The leaching/precipitation of the battery paste by the reagents will be controlled by varying the concentration of the precipitating agent, lead-acid paste/precipitating agent solution ratio, reaction time, temperature of precipitation process, and the particle size. The characterization techniques that will be used are thermal analysis (Thermogravimetry (TG)/Differential thermal analysis (DTA), X-ray Diffraction (XRD), infrared spectroscopy (FTIR), electron microscopy {scanning electron microscopy-Energy Dispersive X-ray Spectrometry (SEM-EDX) and Transmission electron microscopy (TEM), ICPOES. Based on the synthesis, modification and Calcinations, a new electrode material will be developed for lead acid battery. This understanding will help in developing nano lead II oxide; a unique material with special properties, such as high discharge capacity, long life capacity, and large surface area, minimized reagents burden and developed environmentally friendly and easily available reagents for producing starting material nano-PbO for lead-acid battery.

10NML/IPSG/2016/2017/82016-03-012017-02-28charu singhR&DFull tenure(1 year)Surface EngineeringCorrosion

Title: Project Title: Surface properties enhancement of Mg alloys by wet deposition method Module-II: Corrosion study of AZ91 and AZ31 Magnesium alloy and protection by Electroplating in aqueous Ni bath

Abstract: Proposal aims at to enhance the corrosion resistance of magnesium alloy by nickel coating using electroplating option. Magnesium is very reactive and corrodes preferably in deposition bath which makes it difficult to plate. This is further complicated by the secondary phases present as they cause the galvanic corrosion at very high rate. The research will also be carried to develop suitable pretreatment for the magnesium surface so that the dissolution can be controlled during subsequent electroplating in nickel bath in order to obtain the coating on the surface. The suitability of the process shall be established by nickel deposition on pretreated magnesium surface and their corrosion behavior. The effects of secondary phases in magnesium alloy on deposition shall also be studied. The work will be initiated with the corrosion characterization and influence of heat treatments on the performance of magnesium alloys.