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dispersion hardening

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240135
EISBN: 978-1-62708-251-8
..., which takes place during heat treatment; and true dispersion hardening, which can be achieved by mechanical alloying and powder metallurgy consolidation. It provides information on the three steps of precipitation hardening of aluminum alloys: solution heat treating, rapid quenching, and aging...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290099
EISBN: 978-1-62708-306-5
... and the solid-state transformations of the main classes of metals and alloys during fusion welding. The main classes include work- or strain-hardened metals and alloys, precipitation-hardened alloys, transformation-hardened steels and cast irons, stainless steels, and solid-solution and dispersion-hardened...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170003
EISBN: 978-1-62708-297-6
... to slip in a metal part are based on increasing the interference to the slip process. These include: grain refining, cold work, solid-solution hardening, age hardening, dispersion hardening, phase transformation, and duplex-structure strengthening. In multigranular parts, the orientation of the slip...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000017
EISBN: 978-1-62708-313-3
...Abstract Abstract This chapter discusses the metallurgical changes that occur and the improvements that can be achieved in superalloys through solid-solution hardening, precipitation hardening, and dispersion strengthening. It also explains how further improvements can be achieved through...
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
... or Mg 2 Si in solution. Other alloys can be strengthened by precipitation hardening. In fact, even nonmetallic systems are hardened by fine dispersions of hard particles. Examples include hardening of asphalt by sand, and Bakelite by fine silica particles. Fig. 6.8 The aluminum-rich end...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410213
EISBN: 978-1-62708-265-5
... This chapter discusses the stress-strain response of ferritic microstructures and its influence on tensile deformation, strain hardening, and ductile fracture of carbon steels. It describes the ductile-to-brittle transition that occurs in bcc ferrite, the effects of aging and grain size...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170596
EISBN: 978-1-62708-297-6
... to 0.06% Ag (10 to 20 oz per ton) or small amounts of finely dispersed metal oxides, such as Al 2 O 3 , with little loss of conductivity. On the other hand, improved mechanical properties are obtained only at the expense of electrical conductivity. Precipitation-hardened alloys, dispersion-hardened alloys...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280117
EISBN: 978-1-62708-267-9
... by atomization to powder and consolidation by P/M methods that do not melt the powder particles but still attain full density. In the 1950s, P/M was adapted to produce the oxide-dispersion-hardened alloy, TD-nickel, a thoria-hardened version of pure nickel. The P/M process (with oxide-type hardening...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120013
EISBN: 978-1-62708-269-3
... be carefully selected and balanced to produce the desired mechanical properties in the final product. Precipitation hardening (dispersion hardening by phases dispersed in the matrix, generally on a submicroscopic scale) to increase creep resistance of titanium alloys was a significant goal of early...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980195
EISBN: 978-1-62708-342-3
.... The pure metal has a density of 7.28 g/cm 3 and a melting point of 232 °C. The material can be easily worked with its recrystallization temperature below room temperature. Consequently, the softest condition develops rapidly in tin materials after cold working. Work hardening by cold working...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980141
EISBN: 978-1-62708-342-3
... in the container. (b) With feeder die. (c) In the ports of a porthole die. (d) Pulling off the discard in a bridge die [Ake 92] Fig. 4.57 Hot strength of normal and dispersion-hardened aluminum alloys [ Jan 75 ] Fig. 4.58 Dependence of the viscosity of glass lubricants on the temperature [ Sce...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440231
EISBN: 978-1-62708-262-4
... to undissolved precipitate is known as dispersion hardening . The undissolved precipitate is harder than the matrix surrounding it, and the final hardness of the mixture depends on how much undissolved precipitate is present, as well as its manner of distribution. When precipitation hardening mechanisms...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170290
EISBN: 978-1-62708-297-6
... precipitate phases are γ′ and γ″. Carbides may provide limited strengthening directly (e.g., through dispersion hardening) or, more commonly, indirectly (e.g., by stabilizing grain boundaries against excessive shear). The δ and η phases are useful (along with γ′) in controlling the structure of wrought...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ahsssta.t53700115
EISBN: 978-1-62708-279-2
..., which progressively transforms to martensite during plastic deformation. The transformation provides significant dispersion hardening and resistance to localized deformation. This combination of phases gives TRIP steels the high formability of austenite during the initial stages of the stamping process...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060049
EISBN: 978-1-62708-261-7
...-) Hardening Aluminum Alloys Dispersion Strengthening Hardening due to the Formation of Martensite The elastic limit, shown at point A in Fig. 3.4 , is the greatest stress the material can withstand without any measurable permanent strain remaining after the complete release of load...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420339
EISBN: 978-1-62708-310-2
... precipitate dispersed in the matrix, and (2) there must be a degree of lattice matching between the precipitate particles and the matrix (i.e., the precipitate must be coherent). Particle Hardening Precipitation hardening is also known as age hardening or aging, to indicate that the resulting strength...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280025
EISBN: 978-1-62708-267-9
... mostly from solid-solution hardeners and precipitated phases. Principal strengthening precipitate phases are γ′ and γ″, which are found in iron-nickel- and nickel-base superalloys. Carbides may provide limited strengthening directly (e.g., through dispersion hardening) or, more commonly, indirectly (e.g...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ahsssta.t53700023
EISBN: 978-1-62708-279-2
.... Source: Ref 2.1 The three major variables in steel processing are alloying, work hardening, and thermal processing. Alloying refers to the ability of iron to form solid solutions and compounds with other metals. Work hardening refers to the tendency of steel to become stronger when subjected...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170308
EISBN: 978-1-62708-297-6
... that of unalloyed tungsten. ThO 2 particles also interact with dislocations during deformation, which strengthens the material via the classical dispersion-hardening mechanism. Thoriated tungsten is stronger than unalloyed tungsten at all temperatures. As noted above, the addition of rhenium to tungsten...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120131
EISBN: 978-1-62708-269-3
... of metalloid (carbon, boron, silicon, gallium) compounds. Rare-earth (RE) elements have been added, but they can serve more to scavenge oxygen (present from the powder-making process) than to produce RE precipitates with titanium. RE oxides have been formed, and they are suitable for dispersion hardening...