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phase structure

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410017
EISBN: 978-1-62708-265-5
.... The effects of alloying elements on the phase relations shown in the iron-carbon diagram are described later in this chapter. Use of the iron-carbon diagram is further limited because some heat treatments are specifically intended to produce non-equilibrium structures, whereas others barely approach...
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Published: 01 January 2015
Fig. 3.27 Crystal structure of Ti 3 Al (α2) phase and possible slip planes and slip vectors in the structure More
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Published: 01 January 2015
Fig. 3.28 (a) Crystal structure and Burgers vectors in the TiAl (γ) phase. (b) Modified Thompson tetrahedron for the L1 structure More
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Published: 01 November 2010
Fig. D.2 Structure: chainlike precipitate of M2(Cb,Ti). Laves phase in the gamma matrix. Optical microscope, original magnification 250x. Condition: Heat treated (solution annealed 2 h at 1095 °C (2000 °F), air cooled, reannealed 1 h at 980 °C (1800 °F), air cooled, aged 16 h at 720 °C More
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Published: 01 November 2010
Fig. D.4 Structure is Laves phase (light gray particles), MC carbide (dark), and needlelike delta. The matrix is gamma phase. Optical microscope, original magnification 1000×. Condition: Solution treated and aged—solution annealed 1 h at 955 °C (1750 °F), air cooled, and aged 10 h at 760 °C More
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Published: 01 November 2010
Fig. D.5 Structure is delta phase (Ni3Nb) in a gamma matrix. Optical microscope, original magnification 1000×. Condition: Solution treated and aged—solution annealed 1 h at 955 °C (1750 °F), air cooled, aged 8 h at 720 °C (1325 °F), and furnace cooled in 10 h to 620 °C (1150 °F). Source More
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Published: 01 November 2010
Fig. D.14 Structure is acicular sigma phase, M23C6 carbide at grain boundary, and gamma prime within the gamma matrix grains. Optical microscope, original magnification 4500×. Condition: Solution treated and aged—solution annealed 4 h at 1175 °C (2150 °F) and aged 1500 h at 815 °C (1500 °F More
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Published: 01 March 2002
Fig. 3.2 Line sketch of an ordered fcc crystal structure of γ′ phase. ● (solid circles) = nickel atoms, shared with adjacent cube. ○ (open circles) = aluminum or titanium atoms, shared with eight cubes at each corner. - - - (dotted lines) show hidden atoms. Nickel atoms are always on faces More
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Published: 01 December 2008
Fig. 7.16 (a) Precipitated structure by ordinary phase separation. (b) Precipitated structure of inversion type by edge-critical separation. (c) Microstructure of a Fe-Cr-Co magnetic alloy aged in magnetic field. Photograph by M. Okada, M. Homma, H. Kaneko, and G. Thomas More
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Published: 01 December 2008
Fig. 8.12 The compound phase related to refinement of solidification structure of Al alloy by inoculation of Ti-B More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310123
EISBN: 978-1-62708-286-0
... Abstract This chapter discusses the metallurgy, phase structure, thermal processing, and applications of martensitic stainless steels. The phenomenon of martensite formation is explained. A table listing the compositions of martensitic stainless steels is also presented. martensitic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280211
EISBN: 978-1-62708-267-9
... Abstract This chapter examines the effect of heat treating and other processes on the microstructure-property relationships that occur in superalloys. It discusses precipitation and grain-boundary hardening and how they influence the phases, structures, and properties of various alloys...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140165
EISBN: 978-1-62708-264-8
... the relationship between cooling rate, grain size, grain shape, and phase structures. It explains how the transition from liquid to solid state creates the conditions under which microsegregation occurs, and how it impacts the distribution of alloying elements, carbides, and inclusions. The link between...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310069
EISBN: 978-1-62708-286-0
... Abstract This chapter discusses the compositions, mechanical properties, phase structure, stabilization, corrosion resistance, and advantages of austenitic stainless steels. Austenitic alloys are classified and reviewed in three groups: (1) lean alloys, such as 201 and 301, which are generally...
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Published: 01 March 2012
Fig. 5.4 Crystalline structures on cooling in a eutectic phase diagram More
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Published: 01 December 2008
Fig. 5.29 (a) What division of cell structures is most stable: triangular, quadrangular, or hexagonal? (b) Which is more stable, equal cell or unequal cell structure? (c) What is the stable size ratio ( R ¯ α : R ¯ β ) in a dual-phase structure? More
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Published: 01 December 2018
Fig. 6.21 (a) Deformed grain structure at the fracture edge, 400×. (b) Recrystallized dual phase structure composed of ferrite and bainite on OD and ID surfaces at fire side, 200× More
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Published: 01 December 2008
Fig. 5.23 The retardation of grain growth by dispersed particles (the pinning effect decreases the driving force of the growth Δ G ). (a) Dispersion structure vs the single-phase structure. (b) Model for pinning effect More
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310001
EISBN: 978-1-62708-326-3
... treatment. Steel is notable, because it is very responsive to hardening and strengthening by heat treatment. Atomic Bonding and Crystal Structure Atoms interact with one another to form different states (or phases) of matter. The four fundamental states of matter are solid, liquid, gas, and plasma...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170417
EISBN: 978-1-62708-297-6
...) crystal structurephase) to a body-centered cubic (bcc) crystal structure (β-phase). The transformation temperature (β-transus—completion of transformation to β on heating) is strongly influenced by the interstitial elements oxygen, nitrogen, and carbon (α-stabilizers), which raise the transformation...