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alpha alloys

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Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006283
EISBN: 978-1-62708-169-6
... Abstract This article provides a detailed discussion on heat treatment of titanium alloys such as alpha alloys, alpha-beta alloys, and beta and near-beta alloys. Common processes include stress-relief, annealing, solution treating, aging, quenching, and age hardening. It provides information on...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003140
EISBN: 978-1-62708-199-3
... phases and martensitic transformations formed in titanium alloy systems. Information on commercial and semicommercial grades and alloys of titanium is tabulated. The article also discusses the different grades of titanium alloys such as alpha, near-alpha alloys, alpha-beta alloys, beta alloys, and...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006253
EISBN: 978-1-62708-169-6
... Abstract This article introduces the different types, distinctions, and grades of commercially pure titanium and titanium alloys. It describes three types of alloying elements: alpha stabilizers, beta stabilizers, and neutral additions. The article discusses the basic categories of titanium...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006270
EISBN: 978-1-62708-169-6
... Abstract The response of titanium and titanium alloys to heat treatment depends on the composition of the metal, the effects of the alloying elements on the alpha-beta crystal transformation, and the thermomechanical processing utilized during processing of the alloy. This article provides a...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006277
EISBN: 978-1-62708-169-6
..., and transformation texture development during heat treatment of multicomponent alpha/beta and beta titanium alloys. It includes quantitative description of Burgers orientation relationship and path, discussion of lattice correspondence between the alpha and beta phases, and determination of the total...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005401
EISBN: 978-1-62708-196-2
... phase equilibria, crystallography, and deformation behavior of titanium and titanium alloys. The article describes the modeling and simulation of recrystallization and grain growth of single-phase beta and single-phase alpha titanium. The deformation- and transformation-texture evolution of two-phase...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004003
EISBN: 978-1-62708-185-6
... and titanium alloys. The TMP techniques include retained-strain processing, dual-microstructure processing, and dual-alloy processing. The article also describes the TMP of alpha-beta titanium alloys, including fine-grain processing, hybrid-structure processing, dual-microstructure processing, and...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005409
EISBN: 978-1-62708-196-2
... Abstract This article focuses on the modeling of microstructure evolution during thermomechanical processing in the two-phase field for alpha/beta and beta titanium alloys. It also discusses the mechanisms of spheroidization, the coarsening, particle growth, and phase decomposition in titanium...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005674
EISBN: 978-1-62708-198-6
... transus temperature. Alpha stabilizers raise the transformation temperature. Alpha stabilizers include aluminum, oxygen, and lanthanum. Nitrogen and carbon are also α stabilizers, but these elements usually are not added intentionally in alloy formulations. Beta stabilizers are elements that lower the...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004001
EISBN: 978-1-62708-185-6
... in two-phase materials as well as their more attractive properties ( Ref 38 ), near-gamma alloys, which contain a small amount of second-phase alpha-two (Ti 3 Al) or ordered beta, are the most common materials in this class. The near-gamma alloys typically contain between 45 and 48 at.% Al as well...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006256
EISBN: 978-1-62708-169-6
... structure are those of the prior-gamma grains. The U-0.75Ti alloy is shallow hardening, however. At the center of the bar, transformation to alpha phase plus U 2 Ti starts at prior grain boundaries ( Fig. 6b ). Similar structures are found in 18 mm (0.7 in.) diam bar oil quenched from the gamma phase. Aging...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006274
EISBN: 978-1-62708-169-6
... affect the transformation temperature, and so alloying elements in titanium are classified as α stabilizers or β stabilizers. Alpha stabilizers, such as oxygen and aluminum, raise the α-to-β transformation temperature. Nitrogen and carbon are also stabilizers, but these elements usually are not added...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001311
EISBN: 978-1-62708-170-2
... and pickling the sheet before grinding prolongs belt life. Following the initial grit, each successive grit must remove enough stock to eliminate the scratches caused by the previous grit. The alpha alloys, such as Ti-5Al-2.5Sn, are less sensitive to surface condition than the alpha-beta alloys, such...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006275
EISBN: 978-1-62708-169-6
... using chill-cast specimens. It was found that the strengthening effect of cadmium in the terminal-solution tin phase (alpha) is much greater than that of antimony. In this study, the maximum stable values obtained in alloys containing 7 to 9% Sb and 5 to 7% Cd were as follows: tensile strength, 108 MPa...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003247
EISBN: 978-1-62708-199-3
... METALLOGRAPHIC SPECIMENS of unalloyed titanium and of alpha, alpha-beta, and beta titanium alloys is described in this section. TIN AND TIN ALLOYS are extremely soft and have low recrystallization temperatures. Thus, preparation of tin and tin alloy specimens for metallographic examination...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000623
EISBN: 978-1-62708-181-8
... fracture surface of alloy annealed 200 h at 700 °C (1290 °F) and water quenched. Alpha particle size: 4.4 μm. Interalpha spacing: 7.8 μm. True strain at fracture: 0.155. Visible are regions of ductile α and brittle β matrix. Note deformation markings in β and voids in α. SEM, 2100×. Fig. 1185 : Etched...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003204
EISBN: 978-1-62708-199-3
.../h (50 °F/h). Homogenization is required most frequently for alloys with wide freezing ranges, such as tin (phosphor) bronzes, copper nickels, and silicon bronzes. Although coring occurs to some extent in alpha brasses, alpha aluminum bronzes, and copper-beryllium alloys, these alloys survive...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003823
EISBN: 978-1-62708-183-2
... alloy contents. They are based on the alpha structure, that is, the hexagonal close-packed lattice, with dilute additions of solid-solution strengthening and alpha-stabilizing elements such as oxygen and tin. However, in niobium-containing alloys, there is the presence of some niobium-rich beta...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004000
EISBN: 978-1-62708-185-6
... are now commercially available based on intermetallic compounds of titanium and aluminum called titanium aluminides. Titanium aluminide alloys are of two major classes: Titanium aluminide(s) based on the compound Ti 3 Al (or α-2, alpha-two), an ordered hcp allotropic form Titanium aluminide(s...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003184
EISBN: 978-1-62708-199-3
... temperature establishes the maximum temperature to which an alloy can be heated without developing a new microstructure that may result in reduced final properties. Alpha-beta alloys can be strengthened by heat treatments that cause some of the beta phase to transform into alpha, finely dispersed in the beta...