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martempering

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Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006321
EISBN: 978-1-62708-179-5
... carbon content ferritizing annealing flame hardening graphite morphology graphitizing annealing gray iron gray iron castings hardenability hardness heat treating induction hardening martempering medium annealing normalizing pearlite spacing quenching stress relieving surface hardening...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005942
EISBN: 978-1-62708-168-9
... the graphite achieved during casting. This article provides a detailed account of classes of gray iron, and heat treating methods of gray irons with examples. These methods include stress relieving, annealing, normalizing, transformation hardening, austenitizing, quenching, austempering, martempering...
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
... treatments of ductile irons, namely, stress relieving, austenitizing, annealing, normalizing, quenching, martempering, austempering, and surface hardening. The article elucidates the effects of these heat treatments on the mechanical properties of the ductile irons. alloying annealing austempering...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005979
EISBN: 978-1-62708-168-9
.... Stabilizing treatments, namely, stabilizing by tempering and stabilizing by cold treatment are used to minimize dimensional changes that occur following heat treatment. chemical composition dimensional change distortion heat treatment machining martempering retained austenite tool steel TO...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005932
EISBN: 978-1-62708-166-5
... safety heat treatment martempering oxidation polyalkylene glycol polymer quenchants polyvinyl alcohol polyvinyl pyrrolidone quenchants quenching sodium polyacrylates If all workpieces were symmetrical and alike in shape (no odd configurations) and were of the same size...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005802
EISBN: 978-1-62708-165-8
... Abstract This article describes the advantages of martempering and the use of oil and salt as quenchants in the martempering process. It also discusses safety precautions to be followed by an operator and reviews the steels that are suitable for martempering. The article provides information on...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003196
EISBN: 978-1-62708-199-3
... Abstract This article describes the heat treating (stress relieving, normalizing, annealing, quenching, tempering, martempering, austempering, and age hardening) of different types of steels, including ultrahigh-strength steels, maraging steels, and powder metallurgy steels. Tabulating the...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005929
EISBN: 978-1-62708-166-5
... Abstract This article provides information on the salt baths used for a variety of heat treatments, including heating, quenching, interrupted quenching (austempering and martempering), case hardening, and tempering. It describes two general types of salt bath systems for steel hardening: the...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005972
EISBN: 978-1-62708-168-9
... Abstract This article provides a detailed discussion on various recommended heat treating practices, including normalizing, annealing, austenitizing, quenching, tempering, stress relieving, preheating, and martempering, for various low- and un-alloyed cold-work hardening tool steels. The steels...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005969
EISBN: 978-1-62708-168-9
... Abstract This article focuses on heat treatment of malleable and compacted-graphite irons to produce ferritic and pearlitic malleable irons. It describes the heat treatment cycles of malleable iron, including martempering, tempering, bainitic heat treatment, and surface hardening. The article...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005954
EISBN: 978-1-62708-168-9
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005862
EISBN: 978-1-62708-167-2
... martempering oils. No one type of quenchant fits every application, and the choice of quenchants depends on several factors including ( Ref 4 ): Quench speed Hardenability (steel) System size Case depth Safety Shop environment Cost Compatibility with equipment Disposal Ease of...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005980
EISBN: 978-1-62708-168-9
... and might bend more easily. Special quenching procedures such as martempering and austempering may also be useful for controlling distortion in parts that have an appropriate configuration and have been made of material of appropriate hardenability. In martempering, parts are traditionally quenched...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005944
EISBN: 978-1-62708-166-5
... sodium temperature, suitable cooling characteristics during quenching can be adjusted for the purpose of heat treatment, for example, normal quenching, marquenching (martempering), austempering, and annealing ( Ref 1 ). Molten sodium can be used for after quenching, and heating before subsequent heat...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005824
EISBN: 978-1-62708-165-8
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006309
EISBN: 978-1-62708-179-5
... by extended tempering, the resulting structure may not have a good response to selective hardening. Fig. 5 Ferritic malleable iron etched in 2% nital. 750× Martempering and tempering develops mechanical properties similar to those resulting from conventional oil quenching and tempering...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005952
EISBN: 978-1-62708-168-9
...; distortion minimized; fileproof when carbon content is high Fully hardened F (Adapted to fine-grained steels only) Refined; solution of excess carbide favored; austenite retention minimized Low hardness; high toughness G (Interrupted quench; martempering) Unrefined with excess carbide dissolved...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000613
EISBN: 978-1-62708-181-8
... cracking of discs for circular saw blades. Parts were made of a martempered low-alloy tool steel similar to type 234. Fig. 752 : Woody fracture surface of saw disc that broke when dropped. 13×. Fig. 753 : Fine and coarse dimples near the blade surface, in the decarburized zone. SEM, 2600×. Fig. 754...
Book Chapter

By J.R. Keough
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005820
EISBN: 978-1-62708-165-8
.... The quenching temperature range will determine the salt selection and will also affect the time required in the bath. For marquenching (martempering), the temperature is generally near or below the M s . For austempering, the bath temperature is held above the M s and the resultant hardness of the...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002403
EISBN: 978-1-62708-193-1
... 465 62.4 56.8 25.8 23.5 Martempered in oil 250 482 425 35.5 32.3 25.3 23.0 Martempered in air 250 482 305 48.1 (b) 43.8 (b) 23.1 21.0 In oil 450 842 365 49.7 45.2 18.2 16.6 Martempered in oil 450 842 435 45.1 41.0 17.0 15.5 Martempered in air 450 842...