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carbide segregation

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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001814
EISBN: 978-1-62708-180-1
..., unconsolidated interiors, and carbide segregation and poor carbide morphology are reviewed with illustrations. brittle fracture carbide segregation die failure dies electrical discharge machining failure mechanisms finish grinding heat treatment hot working laps machining mechanical testing...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006129
EISBN: 978-1-62708-175-7
... Abstract This article describes the effects of undissolved carbides formed by segregation of alloying elements on the hardness of the powder-metallurgical (PM) high-alloy tool steels (HATS). It explains the calculation of exact stoichiometric carbon content that depends on the required...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006327
EISBN: 978-1-62708-179-5
... (inverse) chills Segregation of carbide-stabilizing elements toward the center Highly pure synthetic and commercial (e.g., Sorel) Fe-C-Si alloys Reduction of the carbon equivalent (CE), mainly by a reduction in its silicon content Oxygen or argon in the melt Cold shuts Low-temperature...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001423
EISBN: 978-1-62708-173-3
... and carbides (heat-affected zone grain boundaries cracking), are also discussed. The article examines the parameters that affect heat-affected zone liquation cracking and presents a solution for each problem. carbides hardening nonferrous high-temperature materials physical metallurgy segregation...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002122
EISBN: 978-1-62708-188-7
... high-speed tool and P/M processed ASP high-speed tool steel This processing results in a fine-grain material with a uniform distribution of small carbides. The homogeneous material, free from segregation, has a uniform structure, regardless of bar size and alloy content. Figure 2 compares...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003766
EISBN: 978-1-62708-177-1
... high-speed steels revealed by macroetching discs of varying diameter with 10% nital. Figure 3 and Figure 4 show the carbide segregation by light microscopy examination in three of the sizes for the M2 and T1 discs. Fig. 2 Carbide distribution on longitudinal planes of high-speed steels...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002440
EISBN: 978-1-62708-194-8
... drill was defective while the other drill was satisfactory. He claimed that failure was a cumulative result of the following defective conditions: the steel contained nonmetallic inclusions that were detrimental to the properties of the drill; the carbide segregation was excessive, causing the drill...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003993
EISBN: 978-1-62708-185-6
... grain-size bands caused by too high a forging temperature. Source: Ref 2 Fig. 3 Time-temperature transformation diagram for IN-718 nickel-base superalloy. Source: Ref 3 Fig. 4 Carbide segregation in austenitic solid-solution matrix of Fe-Ni superalloy 16-25-6 (AISI 650) alloy...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001042
EISBN: 978-1-62708-161-0
... and problems with size control and hardness uniformity in heat treatment. Rapid solidification of the atomized powders used in P/M tool steels eliminates such segregation and produces a very fine micro-structure with a uniform distribution of carbides and nonmetallic inclusions. For high-speed tool steels...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003505
EISBN: 978-1-62708-180-1
... was a cumulative result of the following defective conditions: the steel contained nonmetallic inclusions that were detrimental to the properties of the drill; the carbide segregation was excessive, causing the drill to be brittle; and the cutting edge of the flutes was excessively hard. In his opinion, this high...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005967
EISBN: 978-1-62708-166-5
... before quenching also include such factors as the uniformity of cementite or spheroidized carbides, the severity of segregation, carbide network, and banded structure, all of which affect quenching failures, especially for long shafts and tubes. These are addressed later. Figure 12 shows the effects...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003767
EISBN: 978-1-62708-177-1
... examination are similar to those used for carbon, alloy, and tool steels. Cutting and grinding must be carefully executed to minimize deformation because the austenitic grades work harden readily. The high-hardness martensitic grades that contain substantial undissolved chromium carbide are difficult...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002182
EISBN: 978-1-62708-188-7
... hardnesses in both the annealed and hardened conditions. Further, the large size and the uneven distribution of the carbides (caused by ingot segregation in conventionally produced tool steels) are often unfavorable for optimum machinability. Rapid solidification of the atomized powders used...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001770
EISBN: 978-1-62708-178-8
.... Joshi A. , in Role of Interface Chemistry in Failure of Materials , STP 645, Strauss B.M. and Cullen W.H. Jr. , Ed., ASTM , Philadelphia , 1978 , p 275 34. Johnson W.C. and Blakely J.M. , Ed., Interfacial Segregation , American Society for Metals , 1979...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006342
EISBN: 978-1-62708-179-5
... metabisulfite (K 2 S 2 O 5 ) 100 mL hot distilled water Dissolve in given order. In austenitic Cr-Ni alloys, it tints austenite and reveals dendritic segregation. Ferrite and carbides remain unaffected. Wet-etch for 1–5 min immediately after polishing. 10. … 50% aqueous hydrochloric acid (HCl) Immerse...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006657
EISBN: 978-1-62708-213-6
... 64. Chou T.C. and Joshi A. , Solid State Interfacial Reactions of Ti 3 Al with Si 3 N 4 and SiC , J. Mater. Res. , Vol 7 ( No. 5 ), 1992 , p 1253 – 1265 , 10.1557/JMR.1992.1253 65. Yaney D.L. and Joshi A. , Reaction between Niobium and Silicon Carbide at 1373...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003633
EISBN: 978-1-62708-182-5
...-temperature water Dealloyed layer or oxide α-brass Nitrite Oxide Copper Nitrite Oxide Ammonia (cupric) Porous dissolution zone Ferritic steel High-temperature water Oxide Phosphate Oxide (?) Anhydrated ammonia Nitride CO/CO 2 /H 2 O Carbide CS 2 /H 2 O Carbide Titanium...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006777
EISBN: 978-1-62708-295-2
... of IG embrittlement by films or segregation include: Grain-boundary carbide films in steels Iron nitride grain-boundary films in nitrided steels Temper embrittlement of alloy steels by segregation of phosphorus, antimony, arsenic, or tin Grain-boundary carbide precipitation in austenitic...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003752
EISBN: 978-1-62708-177-1
... was not colored. The arrows point to austenite that formed during the conversion of ferrite to sigma. Magnification bar is 10 μm in length. Fig. 19 High-carbon tool steel etched with boiling alkaline sodium picrate to color the cementite. Note the lighter-colored carbides in the segregation streak...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005937
EISBN: 978-1-62708-168-9
... that carbides are not produced in the last-to-freeze volumes between the graphite nodules. Severe segregation of alloy elements can serve to lower the overall hardenability of ductile iron. Normalizing (air cooling following austenitizing) can result in a considerable improvement in tensile strength and may...