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heat conduction

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440055
EISBN: 978-1-62708-262-4
... Abstract This chapter, a detailed account of furnaces and related equipment for heat treating, begins by describing three basic modes of heat transmission, namely conduction, convection, and radiation, followed by a discussion on the working principle, applications, advantages, and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050215
EISBN: 978-1-62708-311-9
... supply output would have to be low enough to allow conduction of heat from the outer regions of the steel part to the inner ones. Otherwise, the surface may be overheated, leading to grain growth or even melting. Once the frequency has been selected, varying the power density and heating time can...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060333
EISBN: 978-1-62708-261-7
... dispersion of Ni 2 Si precipitates in the quenched and aged condition of copper alloy C64700, Cu-2Ni-0.7Si. Original magnification: 500× Most precipitation-hardening copper alloys are used in electrical and heat conduction applications. Therefore, the heat treatment must be designed to develop the...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310351
EISBN: 978-1-62708-326-3
... range of properties that account for their extensive use as engineering materials. The most common use of copper is in applications requiring high electrical conductivity. Other applications include tubing, building hardware, industrial and plumbing valves and fittings, heat exchangers, fasteners...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440243
EISBN: 978-1-62708-262-4
... difficult to define, specifications may initially need to be clarified with regard to the exact test scales or test methods to be used and the critical locations where these tests are to be made before a capability study is conducted. Process results for many metallurgical and heat treating processes are...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050025
EISBN: 978-1-62708-311-9
.... 3.8 Calcium-clogged water paths due to high-conductivity water. Source: Ref 7 The different elements of the induction-heating system have different cooling water requirements. Thus, the cooling water needed to cool the electrical components in the power supply, heat station, induction coil...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140061
EISBN: 978-1-62708-335-5
... condition, it is not normally guaranteed. Electrical conductivity only approximates the relationship of chemistry, structure, and thermal treatment in cast or cast and heat treated aluminum structures. Electrical conductivity is used in rotors and anodes as an acceptance criterion. It may also be used...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140061
EISBN: 978-1-62708-335-5
... condition, it is not normally guaranteed. Electrical conductivity only approximates the relationship of chemistry, structure, and thermal treatment in cast or cast and heat treated aluminum structures. Electrical conductivity is used in rotors and anodes as an acceptance criterion. It may also be used...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440231
EISBN: 978-1-62708-262-4
... Abstract This chapter presents an overview of heat treating of nonferrous alloys. First, a brief discussion on the effects of cold work and annealing on nonferrous alloys is presented. This is followed by a discussion on the mechanisms involved in the more commonly used heat treating procedures...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.9781627083119
EISBN: 978-1-62708-311-9
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
... of time, followed by slow cooling. In steels, annealing is conducted by heating to the temperature range shown in Fig. 5 , holding for an appropriate time, and then slowly cooling to room temperature. Annealing is used to reduce hardness, obtain a relatively near-stable microstructure, refine the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440085
EISBN: 978-1-62708-262-4
... improperly located, the performance of the complete system is degraded. Poor input into even the most sophisticated temperature measurement and control systems will produce poor results. Temperature is a measure of the ability to transfer heat. Heat may be transferred by conduction, convection (actually...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410091
EISBN: 978-1-62708-280-8
... processes. sand casting gravity casting low-pressure permanent mold casting heat treatment alloying elements cast aluminum alloys casting microstructures High purity aluminum (minimum 99%) has high electrical conductivity characteristics and therefore is used for applications such as...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240177
EISBN: 978-1-62708-251-8
... by austenitizing and quenching. Tempering is conducted to restore a portion of the ductility that was lost during hardening, and often, appreciable softening is produced by tempering. Fig. 11.6 Hardening heat treatment for steels The carbon content is critical to the ability to harden...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060197
EISBN: 978-1-62708-261-7
... techniques, induction heating can often provide energy savings and much higher heating rates than convection, radiation, conduction, or even flame-impingement processes. Heat treating is a major application of induction heating, with surface hardening of steel and cast iron being the most prevalent use...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130255
EISBN: 978-1-62708-284-6
... Abstract This chapter provides an overview of the fundamental material- and process-related parameters of quenching on residual stress, distortion control, and cracking. It begins with a description of phase transformations during heating and quenching of steel. This is followed by a section on...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310331
EISBN: 978-1-62708-326-3
... interrelated factors. The first is the accuracy of heat regulation, to attain and remain within the desired temperature range. Furnace temperature uniformity surveys conducted periodically, as per SAE AMS 2750, can help to assure the temperature accuracy and uniformity within the furnace. The second very...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130043
EISBN: 978-1-62708-284-6
... Abstract This chapter provides an overview of the possible mechanisms of failure for heat treated steel components and discusses the techniques for examining fractures, ductile and brittle failures, intergranular failure mechanisms, and fatigue. It begins with a description of the general...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120055
EISBN: 978-1-62708-269-3
... the closure of internal solidification shrinkage or gas porosity in titanium castings. It also is used in P/M processing. Because thermal conditions between 899 and 955 °C (1650 and 1750 °F) are used for two to four hours, HIP clearly functions as a heat treatment. HIP is conducted on chemically...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040059
EISBN: 978-1-62708-300-3
.... The following conclusions were drawn from these experiments conducted in references [ Semiatin et al., 1987 ] and [ Burte et al., 1989 ]: The interface heat transfer coefficient increases with forging pressures. When the workpiece is free resting on a die, the heat transfer coefficient is an...