Modelling the Deformation, Recrystallization and Microstructure-Related Properties in Metals

Modelling the Deformation, Recrystallization and Microstructure-Related Properties in Metals
Author: Jurij J Sidor
Publisher: Mdpi AG
Total Pages: 144
Release: 2021-11-15
Genre: Technology & Engineering
ISBN: 9783036523842

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In the special issue related to Modelling the Deformation, Recrystallization and Microstructure-Related Properties in Metals, we presented a wide spectrum of articles dealing with modelling of microstructural aspects involved in deformation and recrystallization as well as simulation of microstructure-based and texture-based properties in various metals. The latest advances in the theoretical interpretation of mesoscopic transformations based on experimental observations were partially discussed in the current special issue. The studies dealing with the modelling of structure-property relationships are likewise analyzed in the present collection of manuscripts. The contributions in the current collection evidently demonstrate that the properties of metallic materials are microstructure dependent and therefore the thermomechanical processing (TMP) of the polycrystalline aggregates should be strictly controlled to guarantee the desired bunch of qualities. Given this, the assessment of microstructure evolution in metallic systems is of extraordinary importance. Since the trial-error approach is a time-consuming and quite expensive methodology, the materials research community tends to employ a wide spectrum of computational approaches to simulate each chain of TMP and tune the processing variables to ensure the necessary microstructural state which will provide desired performance in the final product. Although many hidden facets of various technological processes and related microstructural changes were revealed in the submitted works by employing advanced computational approaches, nevertheless, the contributions collected in this issue clearly show that further efforts are required in the field of modelling to understand the complexity of material's world. The final goal of modelling efforts might be a development of a comprehensive model, which will be capable of describing many aspects of microstructure evolution during thermomechanical processing.

Microstructure Evolution in Metal Forming Processes

Microstructure Evolution in Metal Forming Processes
Author: J Lin
Publisher: Elsevier
Total Pages: 409
Release: 2012-07-09
Genre: Technology & Engineering
ISBN: 0857096346

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Monitoring and control of microstructure evolution in metal processing is essential in developing the right properties in a metal. Microstructure evolution in metal forming processes summarises the wealth of recent research on the mechanisms, modelling and control of microstructure evolution during metal forming processes. Part one reviews the general principles involved in understanding and controlling microstructure evolution in metal forming. Techniques for modelling microstructure and optimising processes are explored, along with recrystallisation, grain growth, and severe plastic deformation. Microstructure evolution in the processing of steel is the focus of part two, which reviews the modelling of phase transformations in steel, unified constitutive equations and work hardening in microalloyed steels. Part three examines microstructure evolution in the processing of other metals, including ageing behaviour in the processing of aluminium and microstructure control in processing nickel, titanium and other special alloys. With its distinguished editors and international team of expert contributors, Microstructure evolution in metal forming processes is an invaluable reference tool for metal processors and those using steels and other metals, as well as an essential guide for academics and students involved in fundamental metal research. Summarises the wealth of recent research on the mechanisms, modelling and control of microstructure evolution during metal forming processes Comprehensively discusses microstructure evolution in the processing of steel and reviews the modelling of phase transformations in steel, unified constitutive equations and work hardening in microalloyed steels Examines microstructure evolution in the processing of other materials, including ageing behaviour in the processing of aluminium

Process Modeling Applied to Metal Forming and Thermomechanical Processing

Process Modeling Applied to Metal Forming and Thermomechanical Processing
Author: J. F Thomas (Jr)
Publisher:
Total Pages: 164
Release: 1984
Genre:
ISBN:

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This Lecture Series considers process modeling which provides a new perspective to advance metal forming and thermo-mechanical processing. Working and forming processes are viewed as systems which integrate component behaviour such as workpiece flow, heat flow and friction at the workpiece-tooling interface, and microstructural evolution. These are combined to form a system process model using deformation mechanics. The Lecture Series covers extrusion, forging, rolling, and sheet forming processes. It will provide specific results for light metals, steels and superalloys and introduce finite element methods and related aspects of computer-aided process design. The Lecture Series was sponsored by the Structures and Materials Panel and organized by the Consultant and Exchange Program of AGARD.

Thermo-Mechanical Processing of Metallic Materials

Thermo-Mechanical Processing of Metallic Materials
Author: Bert Verlinden
Publisher: Elsevier
Total Pages: 551
Release: 2007-06-07
Genre: Technology & Engineering
ISBN: 0080544487

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Thermo-Mechanical Processing of Metallic Materials describes the science and technology behind modern thermo-mechanical processing (TMP), including detailed descriptions of successful examples of its application in the industry. This graduate-level introductory resource aims to fill the gap between two scientific approaches and illustrate their successful linkage by the use of suitable modern case studies. The book is divided into three key sections focusing on the basics of metallic materials processing. The first section covers the microstructural science base of the subject, including the microstructure determined mechanical properties of metals. The second section deals with the current mechanical technology of plastic forming of metals. The concluding section demonstrates the interaction of the first two disciplines in a series of case studies of successful current TMP processing and looks ahead to possible new developments in the field. This text is designed for use by graduate students coming into the field, for a graduate course textbook, and for Materials and Mechanical Engineers working in this area in the industry. * Covers both physical metallurgy and metals processing * Links basic science to real everyday applications * Written by four internationally-known experts in the field

Modeling of the Microstructure and Mechanical Properties of Steels During Thermomechanical Processing

Modeling of the Microstructure and Mechanical Properties of Steels During Thermomechanical Processing
Author: Y.-W. Cheng
Publisher:
Total Pages: 72
Release: 1997
Genre: Computer simulation
ISBN:

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Models have been developed for the microstructural changes in C-Mn, vanadium-treated and eutectoid steels during thermomechanical processing. They relate processing parameters, such as strain, strain rate, and temperature to microstructural features, such as volume fraction of the recrystallized material and austenite grain size, with emphasis on the effect of microstructural changes on the mechanical properties of the final product. Model-predicted mechanical properties were compared with values measured in laboratory and industrial experiments. The models gave an accurate, quantitative characterization of the plates, rods, and rails subjected to rolling processes. The results of this study provide a basis for future optimization of the chemical composition and processing of steels.

Thermo-Mechanical Modeling of Additive Manufacturing

Thermo-Mechanical Modeling of Additive Manufacturing
Author: Michael Gouge
Publisher: Butterworth-Heinemann
Total Pages: 296
Release: 2017-08-03
Genre: Technology & Engineering
ISBN: 0128118210

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Thermo-mechanical Modeling of Additive Manufacturing provides the background, methodology and description of modeling techniques to enable the reader to perform their own accurate and reliable simulations of any additive process. Part I provides an in depth introduction to the fundamentals of additive manufacturing modeling, a description of adaptive mesh strategies, a thorough description of thermal losses and a discussion of residual stress and distortion. Part II applies the engineering fundamentals to direct energy deposition processes including laser cladding, LENS builds, large electron beam parts and an exploration of residual stress and deformation mitigation strategies. Part III concerns the thermo-mechanical modeling of powder bed processes with a description of the heat input model, classical thermo-mechanical modeling, and part scale modeling. The book serves as an essential reference for engineers and technicians in both industry and academia, performing both research and full-scale production. Additive manufacturing processes are revolutionizing production throughout industry. These technologies enable the cost-effective manufacture of small lot parts, rapid repair of damaged components and construction of previously impossible-to-produce geometries. However, the large thermal gradients inherent in these processes incur large residual stresses and mechanical distortion, which can push the finished component out of engineering tolerance. Costly trial-and-error methods are commonly used for failure mitigation. Finite element modeling provides a compelling alternative, allowing for the prediction of residual stresses and distortion, and thus a tool to investigate methods of failure mitigation prior to building. Provides understanding of important components in the finite element modeling of additive manufacturing processes necessary to obtain accurate results Offers a deeper understanding of how the thermal gradients inherent in additive manufacturing induce distortion and residual stresses, and how to mitigate these undesirable phenomena Includes a set of strategies for the modeler to improve computational efficiency when simulating various additive manufacturing processes Serves as an essential reference for engineers and technicians in both industry and academia