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metal shrinkage

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420429
EISBN: 978-1-62708-310-2
... dendrite arm spacing, and the factors that contribute to porosity and shrinkage. dendrite metal shrinkage porosity segregation solidification structures ALMOST ALL METALS AND ALLOYS are produced from liquids by solidification. Sometimes, the liquid metal is poured in a mold with a shape that...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130395
EISBN: 978-1-62708-284-6
... analysis case hardening powder metal steel components POWDER METALLURGY (PM) technology provides a cost-effective method of producing near-net shape products, especially when a large number of the same or similar products are required. While the initial powder used is expensive compared to wrought...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870537
EISBN: 978-1-62708-314-0
... Abstract This chapter discusses the advantages and disadvantages of metal matrix composites and the methods used to produce them. It begins with a review of the composition and properties of aluminum matrix composites. It then describes discontinuous composite processing methods, including stir...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240607
EISBN: 978-1-62708-251-8
... residual stresses from solidification shrinkage. The PM technique generally produces properties superior to those obtained by casting and liquid metal infiltration techniques. Powder metallurgy processing of MMCs is possible for reinforcements of both SiC particulates and whiskers, although Al 2 O 3...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550457
EISBN: 978-1-62708-307-2
... Abstract Metal-matrix composites can operate at higher temperatures than their base metal counterparts and, unlike polymer-matrix composites, are nonflammable, do not outgas in a vacuum, and resist attack by solvents and fuels. They can also be tailored to provide greater strength and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080097
EISBN: 978-1-62708-304-1
... Abstract This chapter discusses the conditions under which carburization and metal dusting occur. It describes the chemical reactions and thermodynamic relationships that drive carburization and metal dusting attack and the factors that determine the amount of damage that metals and alloys are...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060117
EISBN: 978-1-62708-261-7
... Abstract This chapter describes the processes involved in the fabrication of wrought and cast metal products. It discusses deformation processes including bending and forming, material removal processes such as milling, cutting, and grinding, and joining methods including welding, soldering...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140047
EISBN: 978-1-62708-335-5
... acceptable quality castings to be produced from metal with higher hydrogen contents. For most metals, the transformation from the liquid to the solid state is accompanied by a decrease in volume. In aluminum alloys, the volumetric shrinkage that occurs during solidification ranges from 3.5 to 8.5%. The...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240095
EISBN: 978-1-62708-251-8
... in finished castings is sometimes ground out and weld-repaired. Both gas evolution and metal shrinkage during casting can produce porosity. Casting is a major industrial process. This section provides a brief overview of six of the most important of these processes: Sand casting...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550325
EISBN: 978-1-62708-307-2
... Abstract This chapter describes the molecular structures and chemical reactions associated with the production of thermoset and thermoplastic components. It compares and contrasts the mechanical properties of engineering plastics with those of metals, and explains how fillers and reinforcements...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500051
EISBN: 978-1-62708-317-1
... Abstract This chapter discusses the use of modeling and simulation technology in the development of sheet metal forming processes. It describes the five major steps involved in finite-element analysis and the various ways functions of interest can be approximated at each point or node in a...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130151
EISBN: 978-1-62708-284-6
... component, that is, the absence or minimization of the quantity of defects present. Among these defects, the most important ones are those generated by the interaction of gas and metal that promote the appearance of voids. In general, there are two kinds of voids: those generated by gas, and shrinkage pores...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630055
EISBN: 978-1-62708-270-9
... metal, as well as from applied stresses. Study of Chapter 4, “Residual Stresses,” in this book will help to clarify this extremely complex phenomenon. Distortion failures are serious because they can lead to other types of failure or may even cause complete collapse of structures, such as bridges...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260087
EISBN: 978-1-62708-336-2
..., finite element analysis (FEA), die bearings and metal flow, die bearing surfaces, design systems, and treatments, hollow dies and special die designs. Hard coatings for the die bearings have been presented. For the beginners in aluminum extrusion technology, it is very important to understand the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2016
DOI: 10.31399/asm.tb.ascaam.t59190001
EISBN: 978-1-62708-296-9
... P. , and Rappaz M. , <100> Dendrite Growth in Aluminum Feathery Grains , Metall. Mater. Trans. A , Vol 29A , 1998 , p 2807 – 2817 10.1007/s11661-998-0321-9 10. Gandin Ch.A. , Eshelman M. , and Trivedi R. , Orientation Dependence of Primary Dendrite Spacing...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290169
EISBN: 978-1-62708-319-5
... German R.M. , Simulation of the Sintering Densification and Shrinkage Behavior of Powder Injection Molded 17-4 PH Stainless Steel , Metall. Mater. Trans. A , Vol 35 , 2004 , p 257 – 263 10.1007/s11661-004-0126-4 • Lenel F.V. , Powder Metallurgy Principles and Applications , Metal...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870101
EISBN: 978-1-62708-314-0
... to intermediate temperatures, metals for low to high temperatures, and monolithic graphite or ceramics for very high temperatures. Tools for autoclave curing traditionally have been made of either steel or aluminum. Electroformed nickel became popular in the early 1980s, followed by the introduction...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ems.t53730059
EISBN: 978-1-62708-283-9
... on freezing due to the expansion of silicon virtually cancelling out the shrinkage of aluminum. Making sound castings is simplified if there is little or no shrinkage when liquid metal freezes. Magnesium is even lighter than aluminum. Because of its low density, magnesium is finding increasing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240597
EISBN: 978-1-62708-251-8
... those desired in the casting to compensate for shrinkage of the casting on solidification and during cooling to room temperature. Where metal patterns are cast from a master wood pattern, these two allowances must be made unless the alloy used for the metal patterns possesses zero shrinkage. Fusible...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420363
EISBN: 978-1-62708-310-2
... Abstract This appendix provides a detailed overview of the crystal structure of metals. It describes primary bonding mechanisms, space lattices and crystal systems, unit cell parameters, slip systems, and crystallographic planes and directions as well as plastic deformation mechanisms...