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beta-phase silicon carbide

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480141
EISBN: 978-1-62708-318-8
... eutectoid former and the sluggish eutectoid former. Fig. 7.3 Partial phase diagram of the beta eutectoid system. Alloying elements of the beta eutectoid type are manganese, iron, chromium, cobalt, nickel, copper, and silicon. Active eutectoid elements such as silicon and copper rapidly...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240607
EISBN: 978-1-62708-251-8
... expensive than solid-state processing. Characteristics of liquid-phase-processed discontinuous MMCs include low-cost reinforcements, such as silicon carbide particles; low-temperature-melting matrices, such as aluminum and magnesium; and near-net-shaped parts. Liquid-phase processing results in intimate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610209
EISBN: 978-1-62708-303-4
... transformation at the crack tip during fracture, thus increasing the fracture resistance. The strengthening lost by the elimination carbides is replaced by precipitation of fine (Fe,Ni) 3 Ti phases from martensite obtained by aging. However, under certain conditions, precipitation of phases at grain boundaries...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480113
EISBN: 978-1-62708-318-8
..., and ductility as well as creep, fatigue strength, and fatigue crack growth rate. It also discusses the influence of other titanium phases and the properties of titanium-based intermetallic compounds, metal-matrix composites, and shape-memory alloys. alloy composition alpha titanium alloys alpha-beta...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550223
EISBN: 978-1-62708-307-2
..., while the one that is stable at elevated temperature is body-centered cubic (bcc) and is called beta (β). In pure titanium, the alpha phase is stable up to 880 °C (1620 °F), where it transforms to the beta phase; the transition temperature is known as the beta transus. The beta phase is then stable from...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.9781627082693
EISBN: 978-1-62708-269-3
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120131
EISBN: 978-1-62708-269-3
... by a reinforcement of continuous fibers of silicon carbide (SiC). These composite materials have been developed to extend the elevated-temperature performance of titanium and its alloys. Matrix materials used to date include Ti-6Al-4V, Ti-15V-3Sn-3Cr-3Al, and Beta 21S (Ti-3Al-8V-6Cr-4Mo-4Zr). Beta 21S can withstand...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850165
EISBN: 978-1-62708-260-0
... questionable. Cold working has been found to render an area more anodic. Kehl and Metlay made potential measurements of the alpha and beta phases in an alloy of 60% Cu and 40% Zn (Muntz metal) using nine different etchants [ 1 ]. A difference of 0.01 to 0.03 V was consistently observed between the alpha...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120055
EISBN: 978-1-62708-269-3
... to Heat Treatment The response of titanium and titanium alloys to heat treatment depends on the composition of the metal. The basic alpha, near-alpha, alpha-beta, or beta alloys have heat treatment responses attuned to the microstructure (phases and distribution) that can be produced in a given alloy...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310351
EISBN: 978-1-62708-326-3
... formation Promoting grain growth Dissolving phases Producing new phases, by precipitation from solid solution Altering surface chemistry by the introduction of foreign atoms Promoting new phase formation through the introduction of foreign atoms One common heat treating practice used...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060333
EISBN: 978-1-62708-261-7
...-phase casting alloys. Non-heat-treatable 6 xxx Magnesium and silicon Heat treatable with strengthening from Mg 2 Si 6 xx.x Unused series The 3 xx.x and 4 xx.x cast series are the counterpart of wrought 6 xxx series. 7 xxx Zinc/magnesium Heat treatable with strengthening from MgZn 2...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870537
EISBN: 978-1-62708-314-0
.... Fig. 20.5 Silicon carbide monofilament Fig. 20.6 Silicon carbide monofilament/titanium matrix composite The primary MMC fabrication processes are often classified as either liquid phase or solid state. Liquid phase processing is generally considerably less expensive than solid state...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120085
EISBN: 978-1-62708-269-3
... because of the possibility that chloride residues remain as an integral part of the surface. Both types of lubricants improve grinding efficiency when the belts are coated with aluminum oxide or silicon carbide. Flooding the work with lubricant is recommended; however, machines built for flooding...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030112
EISBN: 978-1-62708-282-2
... the intermetallic phases and the carbides are rich in molybdenum, tungsten, and chromium and therefore create adjacent areas of alloy depletion that can be selectively attacked. Carbide precipitation can be retarded considerably by lowering carbon and silicon; this is the principle behind Hastelloy alloy C-276...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430027
EISBN: 978-1-62708-253-2
... forms at the prior austenite grain boundary. The surrounding austenite gets depleted in carbon and transforms allotropically to ferrite. Finally, a lamellar or layered structure of two phases, namely ferrite and carbide/cementite, develops as a result of redistribution of carbon between these two phases...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120025
EISBN: 978-1-62708-269-3
... imperfections. These are regions of interstitially stabilized alpha phase that have substantially higher hardness and lower ductility than the surrounding material. These regions also exhibit a higher beta transus temperature. They arise from very high nitrogen or oxygen concentrations in sponge, master alloy...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480207
EISBN: 978-1-62708-318-8
... grinding and pickling facilities By using properly designed processes, titanium alloys can be worked as readily as many nickel-base and other specialty steels. Crystal Structure Two basic crystalline phases of titanium in its commonly used form are alpha (α) and beta (β) ( Ref 9.1 , 9.11...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480161
EISBN: 978-1-62708-318-8
...- or macroscale. Specific examples of segregation related to unfavorable K -values include beta flecks and tree rings ( Ref 8.3 ). Fig. 8.4 Partial binary phase diagrams. Note that the compositions of the liquid and solid phases of an alloy are not the same at a given temperature but are given by C L...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.9781627082976
EISBN: 978-1-62708-297-6
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910021
EISBN: 978-1-62708-250-1
... solubility The copper-silicon phase diagram shown in Fig. 9 exhibits many different phases with increasing silicon content from pure copper (0% Si) to 14 wt% Si. The phases that are present and their relative amounts depend on the composition of the copper-silicon alloy and also on the heat...