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Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040007
EISBN: 978-1-62708-300-3
...Abstract Abstract This chapter explains that the key to forging is understanding and controlling metal flow and influential factors such as tool geometry, the mechanics of interface friction, material characteristics, and thermal conditions in the deformation zone. It also reviews common...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040237
EISBN: 978-1-62708-300-3
...Abstract Abstract This chapter discusses the use of finite-element methods for modeling cold forging processes. The discussion covers process modeling inputs, such as geometric parameters, material properties, and interface conditions, and includes several application examples. cold...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080437
EISBN: 978-1-62708-304-1
... temperatures, hydrogen atoms can be absorbed at the surface and then diffuse into the metal. Hydrogen atoms in the metal then react with iron carbide forming methane gas which can accumulate at grain boundaries and other interfaces. The chapter describes two applications, one in coal-fired boilers, the other...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400105
EISBN: 978-1-62708-316-4
... the effect of key process parameters including the draw ratio, material properties, geometry, interface conditions, equipment operating speed, and tooling. It then walks through the steps involved in predicting stress, strain, and punch force using the slab method and finite element analysis and presents...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500179
EISBN: 978-1-62708-317-1
.... This chapter discusses the basic methods of tube hydroforming and the underlying process mechanics. It explains how to determine if a material is a viable candidate and whether it can withstand preforming or bending operations. It describes critical process parameters, such as interface pressure, surface...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060223
EISBN: 978-1-62708-343-0
... stresses, and enhanced interfaces for oxidation. continuous-fiber metal-matrix composites elastic-viscoplastic property mismatch residual stress relaxation thermal expansion mismatch THE TECHNOLOGICAL ADVANTAGES of continuous-fiber-reinforced composites include increased static strength...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040059
EISBN: 978-1-62708-300-3
... at the Die/Material Interface 6.5 Measurement of Interface Heat Transfer Coefficient 6.6 Influence of Press Speed and Contact Time on Heat Transfer References References [Altan et al., 1970] Altan T. , Gerds A.F. , “ Temperature Effects in Closed-Die Forging ,” ASM Technical Report...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940087
EISBN: 978-1-62708-302-7
... vary in size from atomic dimensions to large macroscopically identifiable areas. Any local region of the metal/solution interface is either consuming electrons from the metal, appearing as a local cathodic reaction, or releasing electrons to the metal, appearing as a local anodic reaction. For example...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560309
EISBN: 978-1-62708-291-4
... welded using a gas torch and a 60Cu-40Zn brass filler metal, (c) Weld region. The dark band in the parent metal adjacent to the weld is an artifact of the etching process, arising because of the electrochemical difference between the copper and iron alloys. Nital. (d) Weld interface. 135 HV. Nital...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110067
EISBN: 978-1-62708-247-1
... automatic polarity analysis of the reflected pulse, which assists in the detection of delaminated interfaces. The reflected signal also enables reconstruction of images showing the three-dimensional internal structure of the package, which are often useful for recognizing package defects and investigating...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260001
EISBN: 978-1-62708-336-2
.... , “The Friction and Lubrication of Solids, Part II,” Oxford University Press , 1964 14. Schey J.A. , Tribology in Metalworking , American Society for Metals , 1983 15. Abtahi S. , Interface Mechanisms on the Bearing Surface in Extrusion , Proc. Sixth International Aluminum...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420087
EISBN: 978-1-62708-310-2
... of a binary alloy of exactly eutectic composition was examined earlier in this chapter. In this case, provided the growth is regular, the solid-liquid interface is planar. However, when alloy composition departs from eutectic, or when a third alloying element is present, the interface can become unstable...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290137
EISBN: 978-1-62708-306-5
... materials, both metals and nonmetals. However, diffusion bonding requires a smooth surface finish to provide intimate contact of parts, a high temperature, and a high pressure: (a) to allow intimate contact of the parts along the bond interface, followed by plastic deformation of the surface asperities...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2016
DOI: 10.31399/asm.tb.ascaam.t59190001
EISBN: 978-1-62708-296-9
.... Jung C. : Mechanistic Selection and Growth of Twinned Bicrystalline Primary Si in Near Eutectic AI-Si AIloys , PhD thesis, Iowa State University , Ames, IA , 2006 10.2172/897368 5. Jackson K.A. , The Interface Kinetics of Crystal Growth Processes , Interface Sci. , Vol 10...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290279
EISBN: 978-1-62708-306-5
... is the result of good chemical bonding between the glass and the metal at the interface. Matched glass seals can be made between glasses and metals, ceramics, or other glasses. A typical design of a matched glass-to-metal seal is shown in Fig. 10.19 . Fig. 10.19 Typical design of matched glass-to-metal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040067
EISBN: 978-1-62708-300-3
... at the Tool-Workpiece Interface, ” Lubr. Eng.: J. Soc. Tribol. Lubr. Eng. , Feb 1999 , p 23 – 31 . [Ngaile et al., 2002] Ngaile G. , Schumacher R. , Gariety M. , Altan T. , Kolodziej J. , “ Development of Replacements for Phoscoating Used in Forging Extrusion and Metal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460121
EISBN: 978-1-62708-285-3
...-substrate interface. Evaluating the coating residual stress and the coating relaxation behavior after thermal treatments becomes imperative to establish the reliable functionality of the coating for the proposed application. Microstructural characterization methods including optical microscopy, scanning...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040083
EISBN: 978-1-62708-300-3
... in Finite Element Simulation of Metal Forming Processes, ” Eng. Comput. , Vol 13 ( No. 2/3/4 ), 1996 , p 190 – 225 . 10.1108/02644409610114530 [Cho et al., 2003] Cho H. , Ngaile G. , “ Simultaneous Determination of Flow Stress and Interface Friction by Finite Element Based Inverse...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410039
EISBN: 978-1-62708-265-5
... such as the transformation of austenite to ferrite and cementite. At the Ae 1 temperature in the Fe-C system, the free energy of austenite is exactly equal to the free energy of ferrite and cementite and there is no incentive for transformation to occur, especially if interfaces or boundaries between the austenite...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420339
EISBN: 978-1-62708-310-2
... and the localized strain fields is an effective barrier to dislocation movement. For effective precipitation hardening, either a coherent or semicoherent interface must be present. The lattice distortion produced by a coherent precipitate, which impedes dislocation motion, is illustrated in Fig. 16.5 . Once...