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strain-rate effects

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Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001035
EISBN: 978-1-62708-214-3
... of the failed axle did not, at this juncture, rule out or support either of the accident causation scenarios. However, it did give rise to an additional experiment. It was hypothesized that the material in the core of the axle was strain-rate sensitive. If this was so, and the failure of the core occurred...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001788
EISBN: 978-1-62708-241-9
... in the die. The identified strain and stress provide the basic data and information for die life assessment. Simulation software ABAQUS is used for the determination of dynamic stresses and strains during extrusion process. In order to see the effect of temperature, strain rate, bearing length...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006767
EISBN: 978-1-62708-295-2
... based on maximum strain). Additionally, some criteria take into account polar behavior (unequal tensile and compressive failure stresses), anisotropic behavior, and nonconstancy of volume during deformation. The historically early models (Rankine, Tresca, von Mises, and octahedral shear) were...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003530
EISBN: 978-1-62708-180-1
... cause failure by yield. An octahedral shear stress criterion provides a mathematically identical expression to the von Mises criterion. Several other criteria have been proposed (e.g., one based on maximum strain). Additionally, some criteria take into account polar behavior (unequal tensile...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
... set of circumstances that can cause specimen-scale shear banding is the combination of minimum strain hardening and negative strain-rate hardening. A second case in which the central fibrous zone is (apparently) absent has been reported in an HY-100 steel. Both cases are discussed in this article...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003538
EISBN: 978-1-62708-180-1
... that can cause specimen-scale shear banding is the combination of minimum strain hardening and negative strain rate hardening. A second case in which the central fibrous zone is (apparently) absent has been reported in an HY-100 steel. Both cases are discussed in this article. When edge- or center...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003573
EISBN: 978-1-62708-180-1
... of a Shotgun Barrel Caused by a Change from Lead Shot to Iron Shot Effect of Impact/Very High Strain Rates Effect of Temperature Corrective Measure Amount of Distortion Analyzing Distortion Failures Analytical Procedure Example 6: Deformation of a Gas-Nitrided Drive-Gear Assembly...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006797
EISBN: 978-1-62708-295-2
... Deformation Related to Other Types of Failure Deformation by Design Classical Design Limit Analysis Buckling Safety Factors Overload Failure Effect of Impact/Very High Strain Rates Effect of Temperature Effect of Stress Raisers and Complex Stress States Analytical Procedure...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003566
EISBN: 978-1-62708-180-1
... As is well known, light-etching bands of untempered martensite are very often produced by the rapid, concentrated shear strain associated with spalling. The adiabatic heating within the shear band, so-called adiabatic shear bands, raises the temperature locally to a level sufficient to austenitize the band...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006774
EISBN: 978-1-62708-295-2
..., University of Tennessee, 1990 19. Beachem C.D. , “ Interpretation of Electron Fractographs ,” NRL Report 6360, Naval Research Laboratory , Washington D.C. , 1966 , p 49 20. Bodine G. , “ The Effect of Strain Rate upon the Morphology of High Purity 26% Chromium, 1% Molybdenum...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003537
EISBN: 978-1-62708-180-1
.... Observation of Plastic Strain Smaller amounts of plastic deformation might be determined via careful measurement if the surfaces of the component are relatively smooth. The ability to see a neck in a tensile specimen depends on the amount of strain hardening and to some extent, the amount of strain-rate...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001685
EISBN: 978-1-62708-235-8
..., especially at lower strain rates. Increasing the strain rate appears to mitigate the deleterious effects of inclusions, thereby resulting in higher ductile properties with less variance. Fracture morphologies associated with slow strain rates and high hydrogen content are characterized by a brittle...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003545
EISBN: 978-1-62708-180-1
...) is the region of the initial instantaneous elastic strain from the applied load, followed by a region of increasing plastic strain at a decreasing strain rate ( Fig. 3b ). Following the first stage of primary creep is the region of secondary creep, where the creep rate is nominally constant at a minimum rate...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006780
EISBN: 978-1-62708-295-2
...). (b) Relationship of strain rate, or creep rate, and time during a constant-load creep test. The minimum creep rate is attained during second-stage creep. Fig. 4 Creep curves produced under constant-load and constant-stress conditions. Reprinted with permission from Wiley. Source: Ref 6...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001840
EISBN: 978-1-62708-241-9
... alloy under high strain rate compression . Mater. Sci. Eng. A 527 , 7565 – 7570 ( 2010 ) 10.1016/j.msea.2010.07.102 14. Backman M.E. , Finnegan S.A. : In metallurgical effects at high strain rate . Plenum Press , New York ( 1973 ) 15. Walley S.M. : Shear...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003517
EISBN: 978-1-62708-180-1
... in Fig. 2 . Following initial elastic strain resulting from immediate effects of the load, there is a region of increasing plastic flow at decreasing strain rate (first-stage, or primary, creep). This first-stage creep represents an adjustment within the metal, which occurs in the first few moments after...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006779
EISBN: 978-1-62708-295-2
... The acceleration of fatigue crack-growth rates that determines the transition from region 2 to region 3 is caused by the superposition of a brittle or a ductile tearing mechanism onto the mechanism of cyclic subcritical crack extension. These mechanisms occur when the strain at the tip of the crack, the maximum...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001561
EISBN: 978-1-62708-229-7
... (O 2 concentration) is increased; the amount of Cl − required to cause stress corrosion cracking is decreased. Laboratory cracking of sensitized stainless steel has also been observed ( 16 ) in slow strain rate testing; with O 2 concentrations of 2 ppm at temperatures as low as 50°C...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006794
EISBN: 978-1-62708-295-2
... of ASTM Standards , ASTM International , 2019 31. Yin S. , Li D.Y. , and Bouchard R. , Effects of Strain Rate of Prior Deformation on Corrosion and Corrosive Wear of AISI 1045 Steel in a 3.5 Pct NaCl Solution , Metall. Mater. Trans. A , Vol 38 , 2007 , p 1032 – 1040 10.1007...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001487
EISBN: 978-1-62708-234-1
..., a certain measure of creep and stress relaxation takes place. Under a slow rate of loading, the occurrence of creep will result in an increase in the amount of plastic strain, while at temperature, relaxation will cause the stress to decrease with time due to plastic flow of the copper. As a consequence...