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deformation mode

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Published: 01 August 2005
Fig. 2.10 Modes of deformation in compression. (a) Buckling, when h 0 / d 0 > 5. (b) Shearing, when h 0 / d 0 > 2.5. (c) Double barreling, when h 0 / d 0 > 2 and friction is present at the contact surfaces. (d) Barreling, when h 0 / d 0 < 2 and friction is present More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ahsssta.t53700135
EISBN: 978-1-62708-279-2
.... The interactions among the twins, martensite, and dislocations also contribute to increase in strength of TWIP steels. Although the dominant deformation mode in TWIP steel is dislocation glide, the number of deformation-induced twins continues to increase with strain, thus reducing the effective glide distance...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230151
EISBN: 978-1-62708-298-3
... hcp structure, has a variety of different deformation modes, including slip on the basal plane, slip on the prismatic and pyramidal planes, cross slip, and twinning, as illustrated in Fig. 13.2 . There are three first-order and three second-order prismatic planes and six first-order and six second...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630063
EISBN: 978-1-62708-270-9
... of a body-centered cubic structure, shaded to show (a) the diagonal plane along which shear deformation and eventual fracture can occur and (b) one face of the cell, the site of the cleavage mode of fracture Shear Mode The unit cell shown as Fig. 1(a) is shaded along a diagonal plane, which...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090067
EISBN: 978-1-62708-266-2
... embrittlement is the predominant mechanism. It explains how different application variables affect SCC, including loading mode, state of stress, type of steel, temperature, electrochemical potential, heat treatment, and deformation processes. It also compares SCC characteristics in different high-strength...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780216
EISBN: 978-1-62708-281-5
... Abstract This article discusses the material and engineering issues associated with plastic components subjected to impact. The first part covers the effects of loading rate, temperature, and state of stress on both deformation and mode of failure. It discusses standard impact tests, along...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270138
EISBN: 978-1-62708-301-0
... Scanning Electron Fractography zone The SEM fractographs of the three zones are shown in Fig. No or little plastic CH31.2 to CH31.4. Zone 1 shows a mixed mode of fracture, con- deformation sisting of cleavage and intergranular fracture (Fig. CH31.2). Zone zone 2 is characterized by striations and secondary...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630101
EISBN: 978-1-62708-270-9
... at the crack tip to deform by various modes. Source: Ref 2 The effect of the direction of fracture can be seen dramatically on many bending fractures of ductile metals, even if the exterior has been case hardened. Close to the surface on the convex side of the fracture (the origin surface...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400033
EISBN: 978-1-62708-316-4
... and Stretching Limits Combined bending and stretching is a common deformation mode in sheet metal forming. The stretch bend (SB) test ( Fig. 4.27 ) is used to evaluate the limits of sheet materials under stretching and bending deformation modes. In the SB test, the sheet locked by the draw beads...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270045
EISBN: 978-1-62708-301-0
.... Slip is the normal deformation mode in these alloys. They are not prone to twinning under normal deformation conditions. However, in fragments produced in the laboratory by detonation, deformation twins have been found in the 2024 aluminum alloy. Figure 6.10 shows twins in the microstructure of some...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ahsssta.t53700115
EISBN: 978-1-62708-279-2
... effect, where austenite to martensite transformation occurs during plastic deformation, is demonstrated in the drawing of a flanged cylindrical cup shown in Fig. 7.5 . The fraction of transformed austenite to martensite depends not only on the amount of strain but also on the deformation mode (plane...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400027
EISBN: 978-1-62708-316-4
...-dimensional deformation mode, the strain rate ratio is defined by: (Eq 3.34) α = ε ˙ x x ε ˙ y y If this strain ratio is constant over the whole deformation of the material element, and if the shear strain rate is zero or nearly zero, then it is possible...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610055
EISBN: 978-1-62708-303-4
... can involve slip deformation in the interligament region between the voids. Deformation of the ligaments may occur from localized shear bands or by necking of the ligaments between the voids. A good example of the former is the mechanism known as void sheet formation, which is a common fracture mode...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410063
EISBN: 978-1-62708-265-5
... to satisfy on a macroscopic scale the requirement of an unrotated, undistorted habit plane. Figure 5.13 is another schematic representation of the slip (a) and twinning (b) modes of lattice invariant deformation with martensite plates. These sketches, of course, are idealized to demonstrate the concept...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240221
EISBN: 978-1-62708-251-8
... Comparison of brittle and ductile fracture modes 13.1 The Brittle Fracture Problem Brittle fracture can be defined as fracture that takes place at stresses below the net section yield strength, with very little observable plastic deformation and minimal absorption of energy. Brittle fracture...
Image
Published: 01 March 2006
Fig. 3.9 Discontinuity in Manson-Coffin line in aluminum alloys and correlation of the discontinuity with change in mode of plastic deformation. Source: Ref 3.12 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270158
EISBN: 978-1-62708-301-0
... the individual filaments was of the cup-and-cone type with necking, indicating failure by tensile overload. In the other two strands, some of the individual filaments showed some variation in the mode of fracture. They were of the slant type. However, plastic deformation preceding fracture was observed...
Image
Published: 01 October 2005
Fig. 4.9 Possible combinations of mating dimple shapes resulting from different stress states, which cause the crack tip to deform by various modes. Source: Ref 3 More
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Published: 30 November 2013
Fig. 8 Fourteen probable combinations of mating dimple shapes, resulting from different stress states that caused metal at the crack tip to deform by various modes. Source: Ref 2 More
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Published: 01 November 2012
Fig. 17 Fourteen probable combinations of mating dimple shapes, resulting from different stress states that caused metal at the crack tip to deform by various modes. Source: Ref 9 More