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spinodal transformation structures

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420171
EISBN: 978-1-62708-310-2
... decomposition intermediate phases order-disorder transformation spinodal transformation structures superlattice structures PHASE DIAGRAMS are often quite complex, with a number of different reactions occurring at different compositions and temperatures. In most cases, the appearance of several...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240053
EISBN: 978-1-62708-251-8
.... , Spinodal Transformation Structures , Metallography and Microstructures , Vol 9 , ASM Handbook , ASM International , 2004 Free energy is important because it determines whether or not a phase transformation is thermodynamically possible. Essentially, the change in free energy, either Δ F or Δ G...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310091
EISBN: 978-1-62708-286-0
... Abstract This chapter provides information on the structure, design aspects, mechanical properties, forming, machining, and corrosion resistance characteristics of duplex stainless steels. The different types of corrosion covered are general corrosion, pitting corrosion, crevice corrosion, and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060333
EISBN: 978-1-62708-261-7
... compositions are in weight percent. Source: Ref 14.1 In addition, martensitic transformations serve as the principal hardening mechanism in some nonferrous metals and alloys. The nonferrous martensite phases have different crystal structures and may not be as hard as the body-centered tetragonal (bct...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310351
EISBN: 978-1-62708-326-3
... structures and may not be as hard as the body-centered tetragonal (bct) martensite of steel. However, formation of the martensitic structure in nonferrous systems occurs by the same diffusionless transformation as in ferrous systems—that is, by the rapid and concerted shear displacement of atoms into a...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420339
EISBN: 978-1-62708-310-2
... reactions are shown in Fig. 16.1 . The reaction occurs when the initial phase composition (e.g., α 0 , β 0 , or I 0 ) transforms into a two-phase product that includes a new phase, or precipitate. The precipitate phase may differ in crystal structure, composition, and/or degree of long-range order from...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240063
EISBN: 978-1-62708-251-8
... if the free energy of the system is reduced, such as in the case for spinodal decomposition, which was covered in Chapter 4, “Introduction to Phase Transformations,” in this book. What is important is that the free energy of the system is reduced during diffusion. Fig. 5.1 Free-energy...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.9781627082587
EISBN: 978-1-62708-258-7
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310109
EISBN: 978-1-62708-286-0
... anneal to transform austenite to ferrite. Otherwise, at room temperature they would be ferrite plus martensite. There are alloys that are intended to use a mixed ferrite/martensite structure, but they are treated later as a variation from the normal ferritic alloys. The introduction of AOD refining...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410579
EISBN: 978-1-62708-265-5
... Structure of a Commercial 18Cr-8Ni Stainless Steel , Trans. TMS-AIME , Vol 239 , 1967 , p 1136 – 1142 23.17 Eichelman A.H. Jr. , and Hull F.C. , The Effect of Composition on the Temperature of Spontaneous Transformation of Austenite to Martensite in 18-8 Type Stainless Steel , Trans...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310233
EISBN: 978-1-62708-326-3
... a ferritic body-centered cubic (bcc) structure (α) to an austenitic face-centered cubic (fcc) structure (γ). As chromium content increases, the ferrite-to-austenite transformation temperature at first drops slightly, but at approximately 7% Cr, it increases rapidly and completes a loop, defining a...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170457
EISBN: 978-1-62708-297-6
... fracture-mode transition from intergranular to transgranular occurred at approximately 15% Zn for the nontarnishing solutions. This transition has been attributed to a change in the dislocation structure as solute addition increases. Fig. 5 Effect of zinc content on time to failure for specimens...