New Proposals submitted.

S.No. Number Start Date End Date Project Leader Category Type Core Area/ Sub Area Status/ Action/ Resubmission/ Reason for Cancel
1NML/IPSG/2017/2018/89632017-04-012018-03-31Rajesh Kumar RaiR&DFull tenure(1 year)Materials Evaluation/ Mechanical Behaviour of Materialsreview/ submit

Title: High Temperature Mechanical Deformation and Fracture Behavior of Nickel Based Super-alloys (module III).

Abstract: The CM 247 alloy is designed primarily for directionally solidified turbine blade and vane applications. Directional solidification (DS) reduces the number of grain boundaries transverse to the primary loading axis, obtaining improved creep resistance. In DS blades the [001] crystallographic orientation is the preferred orientation along the blade principal axis. During service condition, these components are exposed to severe stress conditions and temperature fluctuation. These service conditions induce low cycle fatigue, creep and creep-fatigue damage in the material. The present proposal aims at studying creep-fatigue interaction behaviour of CM 247 DS nickel base superalloys at temperatures above 750oC and 850oC and studying the microstructural changes through extensive scanning and transmission electron microscopy.

2NML/IPSG/2020/2021/917832020-04-012021-03-31MOHANA RAO ANDAVARAPUScholastic ResearchFull tenure(1 year)Mineral Processing/ Beneficiationproposal/ submit

Title: Characterization, Beneficiation and Coke Formation Studies on Low Volatile Coking Coal for Metallurgical Utility (Module-I)

Abstract: Coking coal is an essential raw material in metallurgical industry, where it is used primarily as energy source and also as reducing agent in blast furnaces. According to World Coal Association, 70% of the world’s steel production depends on coal and 41% of the world electricity generation is through coal. Currently, domestic steel makers meet 70% of their coking coal requirement through imports. The good quality coking coals of the upper seams are fast depleting leaving behind the inferior quality lower seam coal. The lower seam coals presently being mined are mostly Low Volatile Coking (LVC) coal . These coals are presently being mined both in Jharia and Bokaro Coalfields and the available resources is more than 50% of the overall coking coal reserves in India. LVC coals are characterized by high raw coal ash content and difficult-to-wash as these coals have high percentage of near gravity materials. The liberation characteristics of this type of coal are very poor due to highly inter-grown nature of the coal. Therefore, they are being diverted for non-metallurgical uses. The processes adopted for beneficiating the Indian coals are conventional gravity separators and flotation techniques. However, choosing the suitable type of process to recover the clean coals from difficult-to-wash LVC coals has not been attempted. It is aimed in this proposal, systematic R&D studies will be carried out to understand the washing characteristics and development of beneficiation circuits for LVC coals. An attempt will be made to see the technical feasibility of washing LVC coals at 13% ash content with reasonable yield by adopting suitable beneficiation techniques.