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austempering

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Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310163
EISBN: 978-1-62708-326-3
... the soft austenite into martensite or lower bainite in the hardening operation. The chapter provides information on various quenching systems and a description of quenching techniques, namely austempering, martempering, and patenting. Difficulties associated with hardening of steel are discussed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240177
EISBN: 978-1-62708-251-8
..., formability, and machinability. This chapter discusses various heat treatment processes, namely annealing, stress relieving, normalizing, spheroidizing, and hardening by austenitizing, quenching and tempering. It also discusses two types of interrupted quenching processes: martempering and austempering. The...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140117
EISBN: 978-1-62708-264-8
... transformations that occur at different cooling rates and the extent to which they can be changed by adjusting quench parameters. It discusses the role of quenching in martempering and austempering along with related problems such as cracking and distortion and the challenges posed by low-hardenability steels. It...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440207
EISBN: 978-1-62708-262-4
... relieving, annealing, normalizing, surface hardening, quenching, martempering, austempering, and flame and induction hardening. annealing austempering carbon equivalent ductile cast iron flame hardening gray cast iron induction hardening malleable cast iron martempering normalizing quenching...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440097
EISBN: 978-1-62708-262-4
... treated steels) are also discussed, as well as those of free-machining carbon steels. Detailed heat treating procedures are presented for a representative group of carbon steels. The processes involved in tempering and austempering of carbon steels are also discussed. carbon steel free-machining...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440125
EISBN: 978-1-62708-262-4
... treatment of alloy steels and of boron on hardenability of alloy steels are then discussed. Procedures for heat treating four specific alloy steels (4037, 4037H; 4140, 4140H; 4340, 4340; and E52100) are subsequently presented. The chapter concludes with a brief account of austempering and martempering...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310203
EISBN: 978-1-62708-326-3
... the applications of particular types or grades of carbon and low-alloy steels. The discussion covers carbon steel classification for heat treating, tempering of quenched carbon steels, and austempering of steel. In addition, the chapter discusses the effects of alloying and hardenability on steel and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410487
EISBN: 978-1-62708-265-5
... throughout a part just above M s , will almost invariably lead to quench cracking ( Ref 20.3 ). Austempering is another hardening treatment designed to reduce distortion and cracking in higher-carbon steels. The objective of austempering is to isothermally transform austenite to bainite rather than...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220519
EISBN: 978-1-62708-259-4
..., and Sietsma ( Ref 2 ) performed a detailed evaluation of the phase transformations in the process of producing bainitic AISI 52100. To promote spheroidization of the microstructure before the isothermal treatments aimed at forming bainite (austempering), the “as-received” steel ( Fig. 15.5 ) has...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170062
EISBN: 978-1-62708-297-6
... Stabilization in Cast Irons , Trans. AFS , Vol 89 , 1981 , p 79 – 96 8. Austempered Ductile Iron , Ductile Iron Data for Design Engineers , QIT-Fer et Titane Inc. , 1990 , p 4–1 to 4–34 9. Metallurgy and Properties of High-Alloy Graphitic Irons , ASM Specialty Handbook: Cast Irons...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220583
EISBN: 978-1-62708-259-4
... Compacted or vermicular graphite F, P Solidification White cast irons Cementite P, M Solidification and heat treatment (stress relief and/or finishing austenite decomposiiton) Malleable cast irons … F, P Heat treatment Austempered nodular cast iron or austermpered ductile iron Nodular...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060247
EISBN: 978-1-62708-261-7
... “ Standard Specification for Ductile Iron Castings ,” ASTM A536 - 84( 2009 ), ASTM International 10.8 Goodrich G.M. , Ductile Iron Castings , Casting , Vol 15 , ASM Handbook , ASM International , 2008 , p 856 – 971 10.31399/asm.hb.v15.a0005324 10.9 “ Specification for Austempered...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220445
EISBN: 978-1-62708-259-4
... presents the usual thermomechanical treatment cycles for TRIP and dual-phase steels. The main difference between the cycles is the austempering process the TRIP steel undergoes after being treated in the critical region. Part of the austenite formed during the treatment inside the critical region...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300179
EISBN: 978-1-62708-323-2
... over the centuries. Gray cast iron is the most basic and commonly used grade. Other popular types are ductile iron, austempered ductile iron (ADI), and white iron. Gray cast iron is the weakest and simplest grade, and it is widely used for mechanical components, such as gears and cams, and large buried...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310331
EISBN: 978-1-62708-326-3
.... Vanick J.S. , Progress in Heat Treatment of Alloy Cast Iron , Foundry , Vol 71 , July 1943 , p 178 – 179 ; Aug 1943 , p 96 – 97 19. Darawish N. and Elliott R. , The effect of alloy elements on the microstructure and properties of austempered ductile irons , Mater. Sci...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740271
EISBN: 978-1-62708-308-9
... hardness for a given section thickness. In some instances, the rapid cooling produced by the most vigorous agitation increases distortion; thus, mild agitation is often used. Austempering is another interrupted quenching process in which the objective is to form a bainitic structure. Like...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140175
EISBN: 978-1-62708-264-8
... widely used because of its attractive mechanical properties for a relatively cheap cast iron. It is widely referred to as austempered ductile iron (ADI). As discussed in Chapter 12, “Quenching,” the austempering produces a bainite structure that, particularly at the high carbon levels of a cast iron...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400001
EISBN: 978-1-62708-258-7
... austempered ductile iron have been introduced. This section examines each of these cast irons. Generally, the carbon and low-alloy steels come under a classification system based on composition. The higher-alloy steels (the stainless, heat-resistant, wear-resistant steels, etc.) can be...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420303
EISBN: 978-1-62708-310-2
... 15.21 as published in Ref 15.19 Austempering is the interrupted quenching process that is used to form a bainitic structure. The part is quenched into a salt bath above the M s temperature. However, it is allowed to remain at that temperature until the transformation to bainite is complete...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ahsssta.t53700263
EISBN: 978-1-62708-279-2
... partitioning, double stabilization thermal cycle, and two-step austempering have been considered. Steel industry and academic research continue to develop new types and improve capabilities of AHSS. One example is the recent development of nanosteel AHSS. A review of the most promising processes are summarized...