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microstructure model

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040247
EISBN: 978-1-62708-300-3
... Abstract This chapter discusses the development and use of microstructure models for optimizing superalloy forging operations. It describes how the processes that control grain structure evolution during hot working were used in model formulation and compares predicted microstructures with...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410163
EISBN: 978-1-62708-265-5
... models for the assessment of steels contain multiple types of inclusions , Acta Mater. , Vol 54 , 2006 , p 2277 – 2289 10.1016/j.actamat.2006.01.016 9.27 Standard Practice for Extreme Value Analysis of Nonmetallic Inclusions in Steel and Other Microstructural Features, E2283-08 , American...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2016
DOI: 10.31399/asm.tb.ascaam.t59190001
EISBN: 978-1-62708-296-9
... Processes , Interface Sci. , Vol 10 ( No. 2 ), 2002 , p 159 – 169 10.1023/A:1015824230008 6. Engler S. , Zur Morphologie Erstarrender Eisen-Kohlenstoff-Legierungen , Giesserei , Vol 17 ( No. 4 ), 1965 , p 169 – 202 7. Rappaz M. et al. , Modelling of As-Cast Structures...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000025
EISBN: 978-1-62708-313-3
... Microstructure of Superalloys , Gordon and Breach Science Publishers , Amsterdam , 1997 , p 1 – 124 15. Fuchs G.E. and Boutwell B. , Modelling of the Partitioning and Phase Transformation Temperatures of an As-Cast Third Generation Single Crystal Ni-Base Superalloy , Mater. Sci. Eng. A...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110219
EISBN: 978-1-62708-247-1
... the phase and the frequency, additional frequency-dependent phenomena such as attenuation may occur. Thus, an analysis of the defect depth is based on measuring the complete phase-shift-versus-frequency characteristics rather than performing a single frequency analysis [4] , [5] . The modelling...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040193
EISBN: 978-1-62708-300-3
... Abstract This chapter discusses the use of finite-element modeling in forging design. It describes key modeling parameters and inputs, mesh generation and computation time, and process modeling outputs such as metal flow, strain rate, loading profiles, and microstructure. It also includes a...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410113
EISBN: 978-1-62708-265-5
... substitutional alloying elements on Widmanstätten start temperatures, W S , has been evaluated ( Ref 7.15 ). The elongated shape and surface relief associated with Widmanstätten ferrite formation is explained by ledge mechanisms of growth ( Ref 7.16 , 7.17 ). Figure 7.9 shows a schematic model of phase growth...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130001
EISBN: 978-1-62708-284-6
... performance of the design process of a component. A heat-transfer model, coupling with a phase transformation model, a thermomechanical model, and a thermochemical model, is also considered. The chapter further provides information on the failure aspects of and heat treatment procedures applied to welded...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460067
EISBN: 978-1-62708-285-3
... modeling of particle impact is to investigate the deformation process, and related phenomena during impact, which lead to particle bonding and deposition. A general question concerns the mechanism of bonding at the microstructural level: Under what conditions, and to what extent, will metallurgical bonding...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280365
EISBN: 978-1-62708-267-9
... Institute of Mining, Metallurgical and Petroleum Engineers , 2000 , p 39 – 47 10.7449/2000/Superalloys_2000_39_47 • Dandre C.A. et al. , Microstructural Evolution of Inconel 718 During Ingot Breakdown: Process Modeling and Validation , Mater. Sci. Technol. , Vol 16 ( No. 1 ), 2000 , p...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090349
EISBN: 978-1-62708-266-2
..., environmental factors, and cracking characteristics. It includes a model that accounts for the primary factors involved in intergranular SCC, namely, tensile stresses above the yield stress of the base material, a sensitized microstructure, and reactor cooling water. The chapter also provides proven remedies...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040237
EISBN: 978-1-62708-300-3
... during forging, and the microstructure of the forging, as discussed in Chapter 16, “Process Modeling in Impression-Die Forging Using Finite-Element Analysis,” in this book. A few case studies from the literature are discussed below to examine the applications of FEM in cold forging processes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090001
EISBN: 978-1-62708-266-2
...-intensity on crack propagation rates, and describes several mechanical fracture models, including corrosion tunnel, film-induced cleavage, and tarnish rupture models. crack initiation crack propagation stress-corrosion cracking STRESS-CORROSION CRACKING (SCC) is a term used to describe service...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040295
EISBN: 978-1-62708-300-3
... Abstract This chapter addresses the issue of die failures in hot and cold forging operations. It describes failure classifications, fatigue fracture and wear mechanisms, analytical wear models, and the various factors that limit die life. It also includes several case studies in which finite...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260029
EISBN: 978-1-62708-336-2
... Abstract This chapter provides an overview of the thermodynamics of extrusion. It begins by presenting a thermodynamic model of the extrusion process expressed in the form of finite difference equations. It then explains how the model accounts for multiple sources of heat generation, the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410213
EISBN: 978-1-62708-265-5
... , Warrendale, PA , 1996 , p 311 – 325 11.18 Chan K.S. , Ed., Cleavage Fracture , TMS , Warrendale, PA , 1996 11.19 Cottrell A.H. , Dislocations and Plastic Flow in Crystals , Oxford University Press , Oxford, England , 1956 11.20 Hahn G. , A Model for Yielding...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280091
EISBN: 978-1-62708-267-9
... modeling. It is important to recognize that, with the availability of modern computing power, it is possible to model the strain, strain rates, and temperatures during the forging process and thus predict with good accuracy the resulting microstructure in various sections of the component. Forging is no...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220025
EISBN: 978-1-62708-259-4
... (or crystals) is called polycrystalline. Many relevant phenomena that occur in crystalline materials can be represented or simulated in two dimensions. (The DoITPoMS Project at the University of Cambridge has excellent examples of structure modeling using bubble rafts to simulate atomic...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310055
EISBN: 978-1-62708-326-3
... microstructure is then determined metallographically. Modern methods of modeling also are used to assess transformation behavior from first principle (e.g., Ref 4 ) or the development modeling databases from the systematic dilatometry measurements of steels (as a more quantitative indicator of phase...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220193
EISBN: 978-1-62708-259-4
... microstructural evolution models, we must be able to describe the different microstructural features in a uniform and standardized way. Otherwise, there will be little hope of achieving correlations between measured properties, microstructural features, and the results forecasted by models. Fig. 9.62 (a...