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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 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 sequence...
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
.... 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 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
... that a fair-sized area exists that shows “maximum hardness” (zone 2), which indicates that there is some variation in the time-temperature cycles. Fig. 4 Schematic aging curve and microstructure. At a given aging temperature, the hardness of aluminum-copper alloys increases to a maximum, then drops off...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060049
EISBN: 978-1-62708-261-7
... specimen increases, its gage length changes in response to the applied stress. The resulting strain, ε, depicted in the engineering stress-strain curve is the average or nominal linear strain, which is obtained by dividing the change in the gage length (also called the elongation) of the specimen, δ...
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.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 2004
DOI: 10.31399/asm.tb.tt2.t51060115
EISBN: 978-1-62708-355-3
... assessment of the variables. The effects of time-dependent dislocation foreign atom interactions on the stress-strain curves of metals and alloys are termed “strain aging” and “dynamic strain aging.” Strain aging is generally apparent when a tensile test, of a material that exhibits a sharp yield point...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240135
EISBN: 978-1-62708-251-8
... 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 strengthening are overaged, because the beneficial effects of precipitation strengthening are lost as the precipitates grow larger in size and spacing. Both...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410405
EISBN: 978-1-62708-265-5
... strain aging and serrated stress-strain curves are well known in low-carbon steels with microstructures of polycrystalline ferrite ( Ref 18.7 ). Temperatures must be sufficiently high and strain rates sufficiently low in order to permit carbon atom diffusion to dislocations. When dislocation motion...
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: 30 June 2023
DOI: 10.31399/asm.tb.atia.t59340035
EISBN: 978-1-62708-427-7
... or β, which are responsible for strength in the T6 or T8 tempers; (d) equilibrium precipitate (θ or β, etc.) formed after in slow cooling or annealing Aging of the supersaturated solid solution produces a uniform dispersion of very small particles (precipitates) within the aluminum fcc lattice...
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
... Abstract This chapter describes the mechanical properties of fully pearlitic microstructures and their suitability for wire and rail applications. It begins by describing the ever-increasing demands placed on rail steels and the manufacturing methods that have been developed in response...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780295
EISBN: 978-1-62708-281-5
... 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 a quantitative value for the enthalpy relaxation ( Ref 39...
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 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060333
EISBN: 978-1-62708-261-7
... reheating the solution-annealed material to a temperature below the equilibrium solvus for a time sufficient to nucleate and grow the beryllium-rich precipitates responsible for hardening. For the high-strength alloys, age hardening is typically performed at temperatures of 260 to 400 °C (500 to 750 °F...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610209
EISBN: 978-1-62708-303-4
... initiation and crack propagation stages of fatigue. Fig. 30 Comparison of fatigue strength bands for 2014-T6, 2024-T4, and 7075-T6 aluminum alloys for rotating beam tests. Source: Ref 16 The S - N response curves for rotating beam fatigue strength of unnotched aluminum alloys tend to level...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610415
EISBN: 978-1-62708-303-4
... Abstract This chapter compares and contrasts the high-temperature behaviors of metals and composites. It describes the use of creep curves and stress-rupture testing along with the underlying mechanisms in creep deformation and elevated-temperature fracture. It also discusses creep-life...