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time-temperature parameters

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060021
EISBN: 978-1-62708-343-0
..., and time in order to determine multiheat constants that are then used to fit multiheat data from other materials and thus estimate rupture times. creep-rupture failure multiheat constants time to failure time-temperature parameters CREEP RUPTURE is essentially the end point of a creep test...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490059
EISBN: 978-1-62708-340-9
... sample. In the sections that follow, it discusses the effects of stress and temperature on creep rate, the difference between diffusional and dislocation creep, and the use of time-temperature-stress parameters for data extrapolation. It explains how to deal with time dependent deformation in design, how...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040059
EISBN: 978-1-62708-300-3
..., and the influence of equipment-related parameters such as press speed, contact time, and tooling geometries. forging heat transfer temperature 6.1 Introduction 6.2 Heat Generation and Heat Transfer in Metal Forming Processes 6.3 Temperatures in Forging Operations 6.4 Measurement of Temperatures...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220273
EISBN: 978-1-62708-259-4
..., quenching, tempering, patenting, carburizing, nitriding, carbonitriding, and nitrocarburizing. It describes the primary objectives of each treatment along with processing sequences, process parameters, and related phase transformations. The chapter contains more than 100 images, including time-temperature...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050155
EISBN: 978-1-62708-311-9
... heating time, s Scan time Work temperature Production rate Inductor input (b) Entering coil Leaving coil cm in. s/cm s/in. °C °F °C °F kg/h lb/h kW/cm 2 kW/in. 2 Rounds 1.27 ½ 4130 9600 11 17 0.39 1 50 120 565 1050 92 202 0.064 0.41 1.91 ¾ 1035 mod...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090221
EISBN: 978-1-62708-266-2
...Abstract Abstract This chapter describes the conditions under which copper-base alloys are susceptible to stress-corrosion cracking (SCC) and some of the environmental factors, such as temperature, pH, and corrosion potential, that influence crack growth and time to failure. It explains...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850562
EISBN: 978-1-62708-260-0
...Abstract Abstract This appendix provides detailed information on the processes and procedures used in electrolytic polishing. It lists important process parameters, including time, temperature, voltage, and current density, as well as the recipes of electrolytic solutions used. The information...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820001
EISBN: 978-1-62708-339-3
... – 284s 10. Moore T.J. , Time-Temperature Parameters Affecting Corrosion of 18Cr-8Ni Weld Metals , Weld. J. , Vol 39 ( No. 5 ), 1960 , p 199s – 204s 11. Honeycombe J. and Gooch T.G. , Intergranular Attack in Welded Stress-Corrosion Resistant Stainless Steel , Weld. J...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310127
EISBN: 978-1-62708-326-3
... of the practical responses of subcritical annealing involve diffusion and creep-related mechanisms and are therefore thermally activated, with a rate that is temperature sensitive. Some rough time-temperature trade-offs can be estimated with the use of the Larson-Miller parameter, P , with one important...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490183
EISBN: 978-1-62708-340-9
... The strength of a boiler tube depends on the level of stress as well as on temperature when the tube-metal temperatures are in the creep range. Because an increase in either stress or temperature can reduce the time to rupture, attention must be given to both factors during investigation of a failure...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130311
EISBN: 978-1-62708-284-6
... assisted by the nitriding layer condition. Fig. 39 Tempering curve as a function of the time-temperature parameter for H11 steel containing 0.40% C, 0.92% Si, 5.09% Cr, 1.34% Mo and 0.52% V. For this curve, t = time in hours, and T = temperature in °F+460. Source: Ref 37 Fig. 41...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130395
EISBN: 978-1-62708-284-6
...: Operation 4M parameter Observation Powder chemistry Low carbon Yes Blending Segregation of carbon and alloy elements No Compaction Low density No Sintering Low sintering temperature No Low soaking time No Oxidizing atmosphere No Decarburizing atmosphere No High rapid...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130241
EISBN: 978-1-62708-284-6
...Technological parameters and test results Table 3 Technological parameters and test results Steel grade Tempering temperature, °C Nitriding time, h Core hardness HV 0 .5 HV 0.5 hardness Fatigue limit (σ 1 ), MPa Residual stresses Max on cross section On surface At surface, MPa...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110666
EISBN: 978-1-62708-247-1
... systematic (as opposed to random) data, a set of experiments may be planned where parameters of interest are varied over specified ranges. However, the complexity of such an experimental matrix may be onerous, and such an exercise will often be prohibitive in both cost and time, motivating the modification...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500133
EISBN: 978-1-62708-317-1
... of temperature, time, and deformation The interaction between the mechanical field, thermal field, and the microstructure evolution during the hot stamping process is given in the schematic in Fig. 7.18 . A description of the different interaction parameters shown in Fig. 7.18 is given in Table 7.2...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040193
EISBN: 978-1-62708-300-3
... parameters to be considered in a closed-die forging include [ SFTC, 2002 ]: The environment temperature The workpiece temperature The die temperatures The coefficients of heat transfer between the dies and the billet and the billet and the atmosphere The time used to transfer the workpiece...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420239
EISBN: 978-1-62708-310-2
... temperature. This process generates less thermal stress in the samples, making lattice parameter measurements more accurate. Homogenization is achieved through diffusion, thus the annealing time and temperature are two important factors. Because the diffusion coefficient increases greatly with temperature...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540281
EISBN: 978-1-62708-309-6
... as an effective yield stress required to achieve a 0.2% strain in a creep test. The ratio of effective yield stress to room-temperature tensile yield strength can be plotted against the Larson-Miller parameter, which takes into account the combined effect of temperature and time at load. Figure 6.9 shows...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.9781627083409
EISBN: 978-1-62708-340-9
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500051
EISBN: 978-1-62708-317-1
... simulations were conducted and the effects were investigated by varying only one process parameter at a time and keeping all the others constant in the simulations to eliminate the interaction between various process parameters and to study the individual effects. The predictions were then compared...