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dissolution precipitation

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270067
EISBN: 978-1-62708-301-0
.... CH2.5 Optical micrographs at the (a) leading edge and (b) midchord section of the LPTR blade. Note the γ-prime precipitates dissolution at the leading edge. Hardness A hardness survey conducted on the airfoil cross section indicated lower hardness at the leading edge (350 HV) compared...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030070
EISBN: 978-1-62708-282-2
.... In this context the term insoluble can refer to “thermodynamically insoluble,” as is the case for most Al-Fe-X particles, or to “commercially insoluble,” in that the kinetics of dissolution are too sluggish to dissolve the particles during nominal thermal practices in production, as is the case for Al-Cu-Mg...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310027
EISBN: 978-1-62708-286-0
..., as with some acid media, so that passivating species cannot form or by being too oxidizing so that the oxidized species that normally affect passivity are no longer stable. The former is called dissolution in the active state, while the latter is termed transpassive dissolution . Intelligent design...
Image
Published: 01 October 2005
Fig. CH2.5 Optical micrographs at the (a) leading edge and (b) midchord section of the LPTR blade. Note the γ-prime precipitates dissolution at the leading edge. More
Image
Published: 31 December 2020
Fig. 9 Aluminum side of equilibrium phase diagram of aluminum-copper showing the solvus boundaries for the metastable Guinier-Preston (GP) zones (θ″) and metastable transition precipitate phase (θ′). The discrepancy with some of the dissolution temperatures suggests that these metastable More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030126
EISBN: 978-1-62708-282-2
...) Iron-chromium nickel Chloride Dealloyed layer (Ni) Hydroxide Dealloyed layer or oxide High-temperature water Dealloyed layer or oxide α-brass Nitrite Oxide Copper Nitrite Oxide Ammonia (cupric) Porous dissolution zone Ferritic steel High-temperature water Oxide Phosphate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090001
EISBN: 978-1-62708-266-2
... of a surface film. It describes bulk and surface reactions that contribute to SCC, including dissolution, mass transport, absorption, diffusion, and embrittlement, and their role in crack nucleation and growth. It also discusses crack tip chemistry, grain-boundary interactions, and the effect of stress...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030003
EISBN: 978-1-62708-282-2
... localized changes in the composition, structure, stress level, and impurities in the joined metals and thus also can affect corrosion. The fundamental understanding of electrochemical corrosion kinetics is based on the uniform dissolution of an unfilmed, pure, homogeneous metal that is equally exposed...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940271
EISBN: 978-1-62708-302-7
... to be increasingly conducive to localized attack leading to failure. Preferred dissolution sites such as dislocations, grain boundaries, and localized cold working such as at scratches Dispersed phases such as carbides, sulfides, oxides, and intermetallic compounds Irregular surface coatings...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280135
EISBN: 978-1-62708-267-9
... Abstract All superalloys, whether precipitation hardened or not, are heated at some point in their production for a subsequent processing step or, as needed, to alter their microstructure. This chapter discusses the changes that occur in superalloys during heat treatment and the many reasons...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000017
EISBN: 978-1-62708-313-3
... °F), which is the solvus temperature for this alloy ( Ref 1 ). Creep rates and stress rupture are likewise affected by precipitate dissolution. Fig. 3.3 Mechanical properties of solid-solution-hardened and aged Inconel 718. Source: Ref 4 3.3 Oxide Dispersion Strengthening Oxide...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.9781627083027
EISBN: 978-1-62708-302-7
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090257
EISBN: 978-1-62708-266-2
... is related to preferential corrosion of the Mg-Al matrix, a result of the galvanic couple created with cathodic FeAl precipitates that are distributed within the more active, anodic matrix ( Ref 9.22 , 9.24 , 9.26 , 9.29 ). However, there is no direct evidence relating the crack path with this precipitate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000025
EISBN: 978-1-62708-313-3
... ( Ref 14 ). The disadvantage of γ′-strengthened alloys is that the service temperature and life of the component are ultimately limited by the coarsening and dissolution of the γ′ precipitates. The binary nickel-aluminum phase diagram shows that complete dissolution of the phase occurs...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230093
EISBN: 978-1-62708-298-3
... for chemical analysis, a trace of halide or sulfate ion promotes dissolution. It is suspected that the trace of residual chloride present in electrowon beryllium flakes was responsible for the reported reactivity with nitric acid. Beryllium is rapidly dissolved by aqueous ammonium bifluoride: (Eq 8.1) 2...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030005
EISBN: 978-1-62708-282-2
... of Pourbaix diagrams. The phenomenon of precipitation runoff on the corroded metal surface is then discussed. The chapter also describes the role of microbes or bacteria in the corrosion of metals. It concludes by providing information on the trends in atmospheric corrosion research and methods...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910099
EISBN: 978-1-62708-250-1
... solution. When a pit has reached a stable stage, barring drastic changes in the environment, it penetrates the metal at an ever-increasing rate by an autocatalytic process. In the pitting of a metal by an aerated sodium chloride solution, rapid dissolution occurs within the pit, while reduction...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910021
EISBN: 978-1-62708-250-1
... or dissolution of the metal continues in this solution because the corrosion products do not prevent subsequent corrosion. Active corrosion is characterized by high weight loss of the metal. If the metal sample is weighed prior to immersion in the solution and then reweighed after the exposure period...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230107
EISBN: 978-1-62708-298-3
.... colorimetric methods fluorometric methods gravimetric methods polarographic methods radiometric methods spectrometric methods volumetric methods BERYLLIUM belongs to the ammonium hydroxide analytical group. Beryllium is completely precipitated by ammonia, along with iron, aluminum, and chromium...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870025
EISBN: 978-1-62708-299-0
... the progress of artificial aging as increased amounts of precipitates are formed and the matrix is depleted of copper. Potential measurements are valuable with zinc-containing (7 xxx ) alloys for evaluating the effectiveness of the solution heat treatment, for following the aging process...