Author
A. S. Shahi
Bio: A. S. Shahi is an academic researcher from Sant Longowal Institute of Engineering and Technology. The author has contributed to research in topics: Welding & Corrosion. The author has an hindex of 11, co-authored 32 publications receiving 498 citations.
Papers
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TL;DR: In this article, the effect of heat input on the microstructure and mechanical properties of gas tungsten arc welded 304 stainless steel (SS) joints was studied and the results indicated that the joints made using low heat input exhibited higher ultimate tensile strength than those welded with medium and high heat input.
241 citations
TL;DR: In this paper, a critical review of noteworthy contributions in terms of SLM process parameters, defects and various post processing techniques considered by various researchers is aimed for critical review, which can clearly facilitate in developing a better scientific understanding of SLMed Ti6Al4V alloy.
118 citations
TL;DR: In this paper, the effects of various gas metal arc welding (GMAW) and universal GMAW process parameters on dilution in single layer stainless steel cladding of low carbon structural steel plates were analyzed.
67 citations
TL;DR: In this paper, Inconel 625 claddings with low base metal dilution possessed better wear resistance as compared to those with high levels of dilution, which resulted in narrowing of the fusion boundary zone.
60 citations
TL;DR: In this article, the influence of sensitization on the metallurgical and impact toughness behavior of different gas tungsten arc AISI 304L welds has been investigated, where each weld has been characterized individually to understand the role of welding conditions on the carbide precipitation behavior which influences its impact toughness performance.
35 citations
Cited by
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Journal Article•
TL;DR: This book by a teacher of statistics (as well as a consultant for "experimenters") is a comprehensive study of the philosophical background for the statistical design of experiment.
Abstract: THE DESIGN AND ANALYSIS OF EXPERIMENTS. By Oscar Kempthorne. New York, John Wiley and Sons, Inc., 1952. 631 pp. $8.50. This book by a teacher of statistics (as well as a consultant for \"experimenters\") is a comprehensive study of the philosophical background for the statistical design of experiment. It is necessary to have some facility with algebraic notation and manipulation to be able to use the volume intelligently. The problems are presented from the theoretical point of view, without such practical examples as would be helpful for those not acquainted with mathematics. The mathematical justification for the techniques is given. As a somewhat advanced treatment of the design and analysis of experiments, this volume will be interesting and helpful for many who approach statistics theoretically as well as practically. With emphasis on the \"why,\" and with description given broadly, the author relates the subject matter to the general theory of statistics and to the general problem of experimental inference. MARGARET J. ROBERTSON
13,333 citations
TL;DR: In this article, a unified equation to compute the energy density is proposed to compare works performed with distinct equipment and experimental conditions, covering the major process parameters: power, travel speed, heat source dimension, hatch distance, deposited layer thickness and material grain size.
369 citations
TL;DR: In this paper, the authors focus on process planning including build orientation, slicing, and path planning, as well as the definition of process parameter selection from a single track to multi-track and multilayer, and finally geometric features from a thinwall to lattice structures with several case studies.
173 citations
TL;DR: In this article, the microstructure, hardness and wear resistance of Inconel 625 coatings were investigated at both room and elevated temperatures, and the results indicated that laser cladded inconel 675 coating has finer microstructures, alleviated segregation of Mo and Nb and lower dilution of iron compared with arc welded one as revealed by XRD, SEM and EDS.
125 citations
Journal Article•
TL;DR: The first of a series of articles dealing with the metallurgical aspects of welding is presented in this paper, where the aim is to help the operator welder and those whose business is welding to a better understanding of how theoretical metallurgy can be used to achieve a sound weld.
Abstract: This article is the first of a series dealing with the metallurgical aspects of welding. The aim of the writers is to help the operator welder and those whose business is welding to a better understanding of how theoretical metallurgy can be used to achieve a sound weld. In order to do this, however, it is first necessary to introduce briefly some basic metallurgical ideas. This article will attempt to outline some of the fundamental aspects of metallurgy and to show how these are related to welding. In subsequent articles it is hoped to deal with the welding metallurgy of specific metals and alloys.
116 citations