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titanium-molybdenum isomorphous systems

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480075
EISBN: 978-1-62708-318-8
... Relationships Figure 4.1 shows a schematic of a partial beta-isomorphous equilibrium phase diagram typical of the binary alloy systems such as titanium molybdenum (Ti-Mo), titanium-vanadium (Ti-V), titanium-niobium (Ti-Nb), and titanium-tantalum (Ti-Ta) ( Ref 4.1 ). The following examples illustrate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480051
EISBN: 978-1-62708-318-8
... of a beta-stabilized system. Important features in this diagram include: The titanium beta phase is isomorphous with niobium; both have the bcc crystal structure. As a result, this type of system is referred to as beta isomorphous. Other binary systems of this type are titanium-molybdenum...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170417
EISBN: 978-1-62708-297-6
... denote the general type of microstructure after processing. Most α-alloys will have a minimal amount of β-phase, sometimes as a result of tramp iron, as in commercially pure titanium, and sometimes due to minor β-stabilizer additions to enhance workability (e.g., the molybdenum and vanadium additions...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120013
EISBN: 978-1-62708-269-3
..., including molybdenum, vanadium, tantalum, and columbium. The other group forms eutectoid systems with titanium, having eutectoid temperatures as much as 333 °C (600 °F) below the transformation temperature of unalloyed titanium. The eutectoid group includes manganese, iron, chromium, cobalt, nickel, copper...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480141
EISBN: 978-1-62708-318-8
... equilibrium conditions. Fig. 7.2 Partial phase diagram of the beta isomorphous system. Alloying elements of the beta isomorphous type are vanadium, molybdenum, tantalum, and niobium. This system differs entirely from the alpha-stabilized system in that alloying additions lower the beta...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480031
EISBN: 978-1-62708-318-8
... solid solubility in beta phase (bcc structure) with hafnium (Hf), molybdenum (Mo), niobium (Nb), tantalum (Ta), vanadium (V), and zirconium (Zr) ( Fig. 2.17 ). Fig. 2.17 The titanium-molybdenum system. Molybdenum, niobium, tantalum, vanadium, hafnium, and zirconium form a complete series of beta...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240527
EISBN: 978-1-62708-251-8
... group consists of elements that are completely miscible in the beta phase; included in this group are molybdenum, vanadium, tantalum, and niobium. The eutectoid-forming group, which has eutectoid temperatures as much as 335 °C (600 °F) below the transformation temperature of unalloyed titanium, includes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430027
EISBN: 978-1-62708-253-2
..., tungsten, molybdenum, vanadium, titanium, niobium, aluminum, copper, sulfur, phosphorus, and boron. Alloying elements may be classified based on their effect on the iron-carbon system: Elements that form solid solutions with iron: C, Cr, Mn, Mo, Si, and Co Elements that tend to stabilize...
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 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480113
EISBN: 978-1-62708-318-8
... (900 and 1300 °F). This phase results in the loss of toughness and ductility. Additions of molybdenum, niobium, tantalum, and vanadium stabilize a small amount of beta phase, producing stable alloys ( Table 6.5 ). Thermal stability of titanium alloys Table 6.5 Thermal stability of titanium...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060013
EISBN: 978-1-62708-261-7
... Titanium HCP BCC <885 >885 Uranium Orthorhombic Tetragonal BCC <662 662 to 774 774 to 1132 Ytterbium FCC BCC R.T. to 798 >798 Yttrium HCP BCC R.T. to 1460 >1460 Zirconium HCP BCC <865 >865 Summary: In 14 metals HCP transforms to BCC as temperature...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090271
EISBN: 978-1-62708-266-2
... of certain α/β alloys, such as ELI Ti-6Al-4V, are often specified for critical saltwater applications. On the other hand, most isomorphous β-phase stabilizer additions, such as molybdenum, vanadium, niobium, and tantalum, tend to reduce or eliminate SCC susceptibility in aqueous halide solutions. The β...
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
.... The beta stabilizers are further subdivided into beta isomorphous elements, which have a high solubility in titanium, and beta eutectoid elements, which have only limited solubility and tend to form intermetallic compounds. The beta isomorphous elements are molybdenum, vanadium, niobium, and tantalum...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230131
EISBN: 978-1-62708-298-3
... hardness values for several beryllides are given in Table 11.4 . For purposes of orientation in the hardness spectrum, aluminum is about 40 on this scale, tungsten about 400, BeO is 1300, and titanium carbide is 3200. The beryllides are, therefore, much harder than common metallic materials, but not among...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060333
EISBN: 978-1-62708-261-7
.... (a) Alpha stabilizers (such as solute addition of Al, O, N, C, or Ga), where the dotted phase boundaries refer specifically to the titanium-aluminum system. (b) Isomorphous β stabilizers (such as solute additions of Mo, V, or Ta). The dotted line shows the martensite start (M s ) temperatures. (c) Eutectoid...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 1998
DOI: 10.31399/asm.tb.ts5.t65900251
EISBN: 978-1-62708-358-4
... classification system, depending on whether the major alloying approach is based on molybdenum or tungsten. This chapter describes the effects of each of the alloying elements and carbon content on the processing, microstructures, and properties of high-speed steels. It discusses the processes involved...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060197
EISBN: 978-1-62708-261-7
... (such as molybdenum, silicon, titanium, vanadium, zirconium, tungsten, and niobium). Ferrite stabilizers require a much lower alloying addition than the austenite stabilizers for an equivalent increase in hardenability. However, with many of these ferrite stabilizers, the competing process of carbide precipitation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480265
EISBN: 978-1-62708-318-8
... to iron, nickel, aluminum, and copper (beta eutectoid elements) and to excessive solid-solution hardening when welded to vanadium, molybdenum, tantalum, and niobium (beta isomorphous elements). Embrittlement due to solid-solution hardening is less severe than that accompanying intermetallic compound...
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: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310001
EISBN: 978-1-62708-326-3
.... Some of the elements present in steels are austenite stabilizers (e.g., manganese and nickel), some are ferrite stabilizers (e.g., silicon, chromium, and niobium), and some are strong carbide formers (e.g., titanium, niobium, molybdenum, and chromium, if present in sufficient quantity; see Ref 8...