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aging response curves

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140133
EISBN: 978-1-62708-335-5
...Abstract Abstract This data set presents aging response curves for a wide range of aluminum casting alloys. The aging response curves are of two types: room-temperature, or "natural," curves and artificial, or "high-temperature," curves. The curves in each group are presented in the numeric...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140175
EISBN: 978-1-62708-335-5
... are required. Hardness curves are provided for many of the alloys. The hardness values are from corresponding aging response studies in which measurements were made on individual lots considered representative of the respective alloys and tempers. aluminum casting alloys brinell hardness growth curves...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060049
EISBN: 978-1-62708-261-7
... in Fig. 3.5 , is the highest stress at which stress is directly proportional to strain. It is obtained by observing the deviation from the straight-line portion of the stress-strain curve. Examples of natural and artificial aging response curves are shown in Fig. 3.29 and 3.30 , respectively...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480075
EISBN: 978-1-62708-318-8
.... Age cycle: 540 °C (1000 °F) for 8 h Cooling rate from the solution temperature has an important effect on the aging response of titanium alloys. This is even more critical in weakly beta-stabilized systems where transformation of the beta phase occurs more readily during a quench. The effect...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440231
EISBN: 978-1-62708-262-4
... Fig. 2 Hardness as a function of annealing temperature for pure copper and a Cu-5Zn alloy, using three different annealing times. Both materials were originally cold rolled at 25 °C (75 °F) to a 60% reduction in thickness. Source: Ref 2 Fig. 4 Schematic aging curve and microstructure...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.tt2.t51060115
EISBN: 978-1-62708-355-3
..., if tensile data are used to understand and predict metallurgical response during the deformation associated with fabrication processes, true stress-true strain relationships are preferred. Fig. 23 Comparison of engineering and true stress-strain curves The deformation that may be accommodated...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140061
EISBN: 978-1-62708-335-5
.... The aging response, or rate of property change as a function of time at peak strength, is also of interest. The flatter curves associated with lower aging temperatures allow greater tolerance in the effects of time/temperature variations. Unlike solution heat treatment, the time required to reach aging...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410405
EISBN: 978-1-62708-265-5
... resistance, and discontinuous plastic flow. The discontinuous plastic flow produces serrations in stress-strain curves, and in view of early work is referred to as the Portevin-LeChatelier effect ( Ref 18.6 ). Dynamic strain aging and serrated stress-strain curves are well known in low-carbon steels...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410213
EISBN: 978-1-62708-265-5
... This chapter discusses the stress-strain response of ferritic microstructures and its influence on tensile deformation, strain hardening, and ductile fracture of carbon steels. It describes the ductile-to-brittle transition that occurs in bcc ferrite, the effects of aging and grain size...
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
... and aging regimens are imposed to achieve selected mechanical properties. Stress relieving and annealing may be employed to prevent preferential chemical attack in some corrosive environments, to prevent distortion, and to condition the metal for subsequent forming and fabricating operations. Response...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780089
EISBN: 978-1-62708-281-5
... chromatography has been used to study the composition of resin formulations ( Ref 1 , 17 ), materials in the electronics field ( Ref 18 – 21 ), resin structure ( Ref 22 – 25 ), aging and resin advancement ( Ref 26 – 28 ), and thermoset cure kinetics ( Ref 29 – 31 ). It has also been used as an on-line process...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410315
EISBN: 978-1-62708-265-5
... in response. It then explains how wire drawing, patenting, and the Stelmor process affect microstructure, and describes various fracture mechanisms and how they appear on steel wire fracture surfaces. The chapter concludes by discussing the effects of torsional deformation, delamination, galvanizing...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1996
DOI: 10.31399/asm.tb.phtpclas.t64560127
EISBN: 978-1-62708-353-9
... for structures prior to aging of tempered martensite and of tempered bainite. (From B.L. Eyre, B.C. Edwards, and J.M. Tichmarsh, p 246 in Advances in Physical Metallurgy with Applications to Steels , The Metals Society, London (1982), Ref 34 ) Fig. 5-34 Tempering curves of some alloy steels compare...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610415
EISBN: 978-1-62708-303-4
... often shows transition to a long, upward sweep of creep rate, with only a point of inflection for the secondary period. Aging of normalized and tempered 0.5Cr-0.5Mo-0.25V steel during creep under 80 MPa (11.6 ksi) stress at 565 °C (1050 °F) has been reported to cause the creep curve to effectively...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.9781627083027
EISBN: 978-1-62708-302-7
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240135
EISBN: 978-1-62708-251-8
... treatable aluminum alloys behave similarly, but the precipitates are, of course, different. The progression of particle growth during the aging process is shown schematically in Fig. 9.10 , and a series of aging curves for an Al-4%Cu alloy is shown in Fig. 9.11 . Reactions carried out beyond maximum...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430027
EISBN: 978-1-62708-253-2
... with a change in crystal structure. Figure 3.5 shows the cooling curve for pure iron. As shown in this figure, the pure iron isothermally transforms from the liquid to solid state at 1539 °C (2802 °F). From 1539 to 1400 °C (2802 to 2550 °F) δ-iron is present and has a bcc structure. At 1400 °C...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610209
EISBN: 978-1-62708-303-4
... of time-dependent fatigue parameters such as frequency, waveform, and load history should be factored into the fatigue analysis. The S - N response curves for rotating beam fatigue strength of unnotched aluminum alloys tend to level out as the number of applied cycles approaches 500 million...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120095
EISBN: 978-1-62708-269-3
...% while ductility remains unchanged. Also, there can be a slight variation in strength after aging treatment. The key to aging response is the ability to cool all section locations to produce a fine martensitic structure before aging. See the section “Alpha-Beta Alloy Hardenability”. Aging of titanium...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780295
EISBN: 978-1-62708-281-5
... taken with a differential scanning calorimeter at a heating rate of 10 °C/min (18 °F/min). The area under the curve represents the difference in enthalpy between initial and final temperatures. The area difference between that of the quenched sample (0 time) and that for a particular aging time gives...