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tungsten carbide

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Published: 01 June 2008
Fig. 22.19 A coarse-grained cemented tungsten carbide (94WC-6Co). Tungsten carbide is gray; matrix is white. Original magnification: 1500 ×. Source: Ref 6 More
Image
Published: 01 December 1999
Fig. 4.28 Friction temperature curves from Bowden-Leben machine. Tungsten-carbide slider onto uncarburized, case-hardened, and case-hardened and tempered 4%Ni-Cr-Mo test pieces. Source: Ref 41 More
Image
Published: 01 March 2002
Fig. 7.13 Band-saw blades bonded with tungsten carbide particles along the cutting edge. The top blade is toothless, whereas the bottom blade is gulleted (notched) to help carry away the cutting debris. More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060001
EISBN: 978-1-62708-261-7
... Abstract This chapter describes some of the technological milestones of the early 20th century, including the invention of tungsten carbide tool steel, the use of age-hardening aluminum in the Wright Flyer , the development of a new heat treating process for aluminum alloys, and Ford’s...
Image
Published: 01 November 2007
Fig. 10.94 Scanning electron micrograph (backscattered electron image) showing various hardface particles in the proprietary tungsten carbide based hardfacing weld overlay, HF60. The results (wt%) of semiquantative EDX analyses of various phases are summarized as: Light color phases (A, B, C More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170573
EISBN: 978-1-62708-297-6
... the hard carbide particles are bound together, or cemented, by a ductile metal binder (usually cobalt). These materials were first developed in Germany in the early 1920s in response to demands for a die material having sufficient wear resistance for drawing tungsten incandescent filament wires to replace...
Image
Published: 01 December 2001
Fig. 4 Variation in fracture toughness ( K Ic ) with cobalt content for WC-Co alloys with different tungsten carbide grain sizes More
Image
Published: 30 September 2023
Figure 9.2: Illustration of drawing die features. (a) Terminology for a typical die for drawing round rod or wire; (b) Illustration of a tungsten-carbide nib in a steel casing [ 11 ]. Reprinted by permission of Pearson Education, Inc. More
Image
Published: 30 April 2020
Fig. 2.1 Scanning electron micrographs of representative powders used in binder-assisted processing. (a) Nickel. (b) Cobalt-chromium alloy. (c) Tungsten carbide. In sequence, these powders were fabricated by vapor reaction, gas atomization, and mechanical attritioning. More
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300271
EISBN: 978-1-62708-323-2
..., but the most common cermets contain carbides (titanium, tungsten, vanadium) as the hard phase. Cemented Carbides This class of materials is really cermets because it is a combination of a metal (binder phase) and a ceramic (carbide). However, this class of materials has the ceramic phase as the major...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240411
EISBN: 978-1-62708-251-8
... carbides. Stable alloy carbides coarsen more slowly than cementite and are therefore much more effective than cementite at higher temperatures. Therefore, carbide formers such as chromium, molybdenum, tungsten, and vanadium are used along with sufficient carbon to form alloy carbides while also providing...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 May 2018
DOI: 10.31399/asm.tb.hma.t59250073
EISBN: 978-1-62708-287-7
... of alloys for tool steels. The chapter provides information on the research investigations into the metallurgy of high-speed tool steels at MIT, Union Carbide, and Carbon Laboratories. The major research effort involved in substituting molybdenum for tungsten in high-speed tool steels is discussed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420289
EISBN: 978-1-62708-310-2
... from extruded aluminum electric motor housings, a deficiency in the amount of carbon in sintered tungsten-carbide cutting tools, and a problem in which components were failing where the gold lead wires were fused to aluminized transistor and integrated circuits. Heating Elements Heating elements...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170596
EISBN: 978-1-62708-297-6
..., and molybdenum, and related oxides and carbides. copper contact alloys gold contact alloys molybdenum contact alloys palladium contact alloys platinum contact alloys silver contact alloys tungsten contact alloys Composition Introduction and Overview Electrical contacts are metallic devices...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040277
EISBN: 978-1-62708-300-3
... Designation (AISI) Required hardness, HRC Forward extrusion 300 2100 M2 62 to 64 285 2000 D2 60 to 62 O1 60 to 62 230 1600 S1 56 to 58 Backward extrusion 315 2200 M4 63 to 65 300 2100 M2 62 to 64 285 2000 D2 60 to 62 Tool steels and tungsten carbides...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2022
DOI: 10.31399/asm.tb.tstap.t56040084
EISBN: 978-1-62708-428-4
... to affect the performance of tungsten carbide (WC) thermal spray coated components in gas turbine engines [ 2 ] and the fatigue life of HVOF sprayed WC on aluminum [ 3 ] and steel. [ 4 ] The bond strength of coatings has also been shown to be affected by residual stress. [ 5 ] How Can Residual...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.tt2.t51060273
EISBN: 978-1-62708-355-3
... GPa 10 6 psi Silicon carbide 655 95 90 13 Tungsten carbide-base cermets 650 94.3 425 61.6 Tungsten carbide 648 94 448 65 Osmium 551 80 . . . . . . Iridium 545 79 . . . . . . Titanium, zirconium, hafnium borides 503 73 490 71 Ruthenium 469 68...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000111
EISBN: 978-1-62708-313-3
... to retain hardness at high temperatures, carbide concentration, and ease of work hardening. They are classed as having poor machinability. For precipitation-hardened alloys, the part should be machined in the annealed condition where possible. For conventional machining, tungsten carbide tools are most...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130529
EISBN: 978-1-62708-284-6
...–400 HV) HB = 0.941 HV (tungsten-carbide ball, 200–700 HV) Cemented carbides H R C = 117.35 − ( 2.43 × 10 6 H V ) 1 / 2 (900–1800 HV) H R A = 211 − ( 2.43 − 10 6 H V ) 1 / 2 1.885 (900–1800...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060273
EISBN: 978-1-62708-261-7
... during metal cutting operations, which permitted much higher cutting speeds, feeds, and depths of cut to be used during machining. This new tungsten carbide alloy was demonstrated at the Paris Exposition of 1900 and was so effective that it virtually made every other tool steel in the world obsolete...