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Microstructure modeling

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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...
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...
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...
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
... 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 14 – 25 10.1179/026708300773002627...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2016
DOI: 10.31399/asm.tb.ascaam.t59190vii
EISBN: 978-1-62708-296-9
... 1 , 4 – 6 , 12 , 13 Table 6 Microstructure models characteristic of the aluminum-silicon technical alloys Alloys group Alloy Microstructural constituents Morphology model description Hypoeutectic AlSi7Mg AlSi5Cu1 AlSi5Cu3M Al.Si10Mg AlSi9Cu AlSi6Cu4 αAl solid solution...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.9781627083003
EISBN: 978-1-62708-300-3
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420263
EISBN: 978-1-62708-310-2
... Abstract This chapter provides an overview of a computational method, called CALPHAD, used for the study of phase equilibria in multicomponent systems. It describes the thermodynamic models and calculation techniques employed in the software and explains how it applies to complex alloys used...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040237
EISBN: 978-1-62708-300-3
..., 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. Depending...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410487
EISBN: 978-1-62708-265-5
... stress requires a remarkable integration of thermal, microstructural, and mechanical interactions, all as a function of time, temperature, and location. Not only was the modeling effort intensive, but also the process required good input data, including heat-transfer boundary conditions in oil and salt...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220273
EISBN: 978-1-62708-259-4
... position in the part that is to be produced. To solve this problem, efficient methods of microstructure prediction for quenched steels were developed around the middle of the 20th century. In the latter decades of the 20th century, efficient mathematical models were developed to perform this prediction...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500133
EISBN: 978-1-62708-317-1
.... , Bergman G. , and Salomonsson P. , Modeling of Microstructure and Material Response in the Press Hardening Process , International Deep Drawing Research Group Proceedings , June 2008 ( Olofström , Sweden ) 7.18 Bergman G. , “Modeling and Simulation of Simultaneous Forming...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420191
EISBN: 978-1-62708-310-2
.... eutectic reactions peritectic reactions space model ternary phase diagram TERNARY SYSTEMS are those having three components. It is not possible to describe the composition of a ternary alloy with a single number or fraction, as was done with binary alloys, but the statement of two independent...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220583
EISBN: 978-1-62708-259-4
.... Maijer D. , Cockcroft S.L. , and Patt W. , Mathematical Modeling of Microstructural Development in Hypoeutectic Cast Iron , Metall. Mat. Trans. A , Vol 30A , 1999 , p 2147 – 58 10.1007/s11661-999-0026-8 10. Mampaey F. , Solidification Mode and Feeding Behavior...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410009
EISBN: 978-1-62708-280-8
... and control arms Fig. 2.3 Design concept model and stress analysis Fig. 2.4 Sequential interaction between design and casting engineering Fig. 2.5 Concurrent engineering between design and casting engineering Fig. 2.6 Casting engineering matrix Abstract...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ahsssta.t53700263
EISBN: 978-1-62708-279-2
... curves for the composite and its components. The composite curve is obtained by applying the rule of mixtures to the components. Fig. 17.3 Composite model for strength. Source: Ref 17.1 In the microstructure design for AHSS, the constituents are ferrite, austenite, and martensite...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220025
EISBN: 978-1-62708-259-4
... of microstructure. It explains how microstructure can be represented qualitatively by points, lines, surfaces, and volumes associated to a large extent with grain contact, and how qualitative features (including grains) can be quantified based on cross-sectional area, volume fraction, density, distribution...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420289
EISBN: 978-1-62708-310-2
... of the alloy, the changes would be exactly reversed. Predict the microstructure of an alloy at a given temperature . A major advantage of phase diagrams is to make fairly accurate predictions of the microstructure developed in an alloy at a specific temperature or after an actual or proposed heat treatment...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040257
EISBN: 978-1-62708-300-3
... Abstract This chapter discusses the processes of isothermal and hot-die forging and their use in producing aerospace components. It explains how isothermal forging was developed to provide a near-net shape component geometry and well-controlled microstructures and properties with accurate...
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 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460067
EISBN: 978-1-62708-285-3
... softening, not considering microstructural changes. A well-known and widely used example of models that describe viscoplastic response of materials at high strain rate is the Johnson-Cook plasticity model ( Ref 3.9 ): (Eq 3.1) σ = ( A + B ε n ) ( 1 + C ln ε ˙ * ) ( 1...