Steel Authority of India

About: Steel Authority of India is a based out in . It is known for research contribution in the topics: Microstructure & Ultimate tensile strength. The organization has 797 authors who have published 661 publications receiving 9958 citations. The organization is also known as: SAIL.

Solid Particle Erosion Behavior of BFS-Filled Epoxy–SGF Composites Using Taguchi's Experimental Design and ANN

Abstract: The target of this experimental study is to investigate the solid particle erosion behavior of a new composite material formed by adding blast furnace slag (BFS) particles at different amounts of 0, 10, 20, 30 wt% to short glass fiber (SGF)-reinforced epoxy resin. The resulting hybrid composites are subjected to solid particle erosion using an air jet–type erosion test rig. Erosion tests are carried out by following a well-designed experimental schedule based on Taguchi's orthogonal array. BFS content, impact velocity, and impingement angle are identified as the significant factors affecting the erosion rate of the composites. A prediction model based on an artificial neural network (ANN) is proposed to predict the erosion performance of these composites under a wide range of erosive wear conditions. This model is based on the database obtained from the experiments and involves training, testing, and prediction protocols. The work shows that an ANN model helps in saving time and resources that are require...

New information on texture development in regular and high-permeability grain-oriented silicon steels

Abstract: The formation of the Goss texture in Fe-3 Pct Si has been studied using crystallite orientation distribution function (ODF) analysis. Textural and microstructural changes through various stages of processing have been investigated for silicon steel with MnS (regular) as well as for steel with a combination of MnS and A1N (high permeability) as grain-growth inhibitor. In both cases the genesis of the final sharp cube-on-edge texture seems to lie in the grains already present in the Goss position in the surface layers of the hot-rolled strip. The major difference in the mechanism of Goss texture formation in the two types of steels is with respect to the relationship between the strengths of the {011}〈100〉 and {111}〈112〉 components through successive processing operations.

Preventive replacement models: an overview and their application in process industries

Abstract: This paper presents a concise review of the optimisation models for the preventive repair/replacement/inspection of components/assemblies/subsystems with the aim of critically examining their prospects as well as limitations in implementation in heavy process industries. The survey covers models under two major categories: models for single-unit systems and for multi-unit systems. Single-unit models are presented under three subcategories of two-state models, three-state models and multistate models; multi-unit models encompass models for the grouping of component replacements under three types of replacements: corrective, opportunistic and preventive. Each of the models and their variations are followed by a discussion on implementation problems and prospects particularly in process industries. [Received 23 April 2008; Revised 18 February 2009; Revised 01 May 2009; Accepted 04 May 2009]

Microstructure and properties of thermomechanically strengthened reinforcement bars : A comparative assessment of plain-carbon and low-alloy Steel grades

Abstract: An extensive investigation has been carried out to study structure-property characteristics and corrosion behavior in three varieties of thermomechanically treated (TMT) reinforcement bars (rebars) produced in an integrated steel plant under the Steel Authority of India Limited. Three experimental steel heats–one of plain-carbon and two of low-alloy chemistry-were chosen for the study. Of the two lowalloy heats, one was copper-bearing and the other contained both copper and chromium for improved corrosion resistance. Hot-rolled bars for each specific chemistry were subjected to in-line thermomechanical treatment, where quenching parameters were altered to achieve different yield strength levels.