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shear deformation

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Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630063
EISBN: 978-1-62708-270-9
... and repulsion. Fig. 1 Basic unit cell 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 Cleavage Mode Other Fracture Modes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260001
EISBN: 978-1-62708-336-2
... at the center of the billet undergo essentially pure elongation in the extruded rod, which corresponds to the change in cross section from billet to extrusion. The elements shown in Fig. 16 , near the container wall, undergo extensive shear deformation due to billet-container interface friction. The elements...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540357
EISBN: 978-1-62708-309-6
...Abstract Abstract Deformation within a crystal lattice is governed principally by the presence of dislocations, which are two-dimensional defects in the lattice structure. Slip from shear stress is the most common deformation mechanism within crystalline lattices of metallic materials, although...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540001
EISBN: 978-1-62708-309-6
...Abstract Abstract This chapter reviews the fundamentals of stress, strain, and deformation and demonstrates some of the tools and techniques used to analyze how materials and structures respond to tension, compression, bending, and shear. It begins with an overview of the behavior of perfectly...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040051
EISBN: 978-1-62708-300-3
.... It then explains how to determine the onset of yielding, which corresponds to the start of plastic deformation and the flow of metal within the workpiece. The chapter then goes on to present two important yield criteria, one based on shear stress (Tresca criterion), the other on distortion energy (von Mises...
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
... of heat-treatable carbon steels. It also provides information on lath and plate martensite and how they differ in structure and deformation properties. martensite martensitic transformation microstructure THIS CHAPTER DESCRIBES the diffusionless, shear-type transformation of austenite...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560125
EISBN: 978-1-62708-291-4
... it intermingles with proeutectoid ferrite and cementite. It explains how ferrite and pearlite respond to deformation and how related features such as slip lines, dislocations, shear bands, and kinking can be detected as well as what they reveal. It also describes the structure of patented wires, cast steels...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270124
EISBN: 978-1-62708-301-0
... that a considerable amount of rubbing occurred after the shaft broke. SEM fractography revealed deformation marks and elongated dimples, typical of shear overloads, along with other details. Based on their analysis, investigators concluded that the cardan shaft failed under torsional overload. They also cited a need...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270122
EISBN: 978-1-62708-301-0
... this region has undergone a considerable amount of shear deformation. Equiaxed dimples in region B are typical of final fracture. Also, rubbing on the periphery of the fracture surface indicates that there was relative rotary motion between the two surfaces after fracture. The fact that the top end...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090333
EISBN: 978-1-62708-266-2
... strength of 2.45 to 3.92 GPa (355 to 569 ksi) and a Young’s modulus of 127 to 166 GPa (18.4 to 24.1 × 10 3 ksi) ( Ref 13.2 ). These alloys are capable of plastic deformation on shear bands, although in tension the plastic elongation to fracture is generally less than 2%. Amorphous alloys...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780404
EISBN: 978-1-62708-281-5
... a polystyrene sample that was deformed past its compressive yield. The section is viewed between cross polars, showing shear bands. 50× Fig. 8 Surface-microcracking network developed on polyoxymethylene due to ultraviolet exposure. 200× Fig. 29 Reflected-light optical micrograph...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240279
EISBN: 978-1-62708-251-8
... temperature. Fig. 16.2 Recrystallization during hot rolling Very large deformations are possible in hot working, and since recovery processes keep pace with the deformation, hot working occurs at essentially a constant flow stress (the shear stress required to cause plastic deformation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260187
EISBN: 978-1-62708-336-2
... causes hot spots due to localized heat generation, especially on the outer skin of the extrusion before it leaves the die. The higher the die bearing length, the higher the amount of shear deformation and the higher the temperature rise for a fixed ram speed. It is always recommended to optimize the die...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040211
EISBN: 978-1-62708-300-3
... references. In the deformation zone, the strain and, consequently, the flow stress, σ ¯ , vary with location. Due to inhomogeneous deformation and internal shearing, the volume of the material near the die surface is subject to more severe deformation. Near the interface, therefore...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290137
EISBN: 978-1-62708-306-5
... are normally associated with diffusion bonding and welding processes. These processes use either deformation or diffusion and limited deformation to produce high-quality joints between both similar and/or dissimilar materials. Specific solid-state welding processes include: Diffusion welding, also...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740373
EISBN: 978-1-62708-308-9
...-density processes use “clean” powders, and any nonreducible surface oxides are limited to very small amounts and, if present, are broken up and homogeneously distributed through shear deformation. Fully dense P/M materials can exceed the properties of wrought materials of the same composition through...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060385
EISBN: 978-1-62708-261-7
... surface that give it a dimpled appearance as depicted in Fig. 16.19(c) . Fig. 16.20 Transgranular fracture modes in body-centered cubic (bcc) crystals. (a) Ductile fracture begins with shear deformation along the diagonal plane, which produces microvoids that eventually lead to fracture. (b...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770135
EISBN: 978-1-62708-337-9
... teeth One or two teeth Apparent occurrence Gradual Sudden Sudden Source: Ref 52 Fig. 6.39 Composite shear stress range gradient. Fatigue-crack initiation in carburized and hardened gears controlled by the 45 shear stress in zones I and III and by the orthogonal shear stress...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980059
EISBN: 978-1-62708-342-3
..., stem; f, extrusion Fig. 3.10 Formation of extrusion piping defect. 1, secondary deformation zone; 2, billet core; 3, shear zone; 4, primary deformation zone; 5, shear zone; 6, dead metal zone; 7, extrusion Fig. 3.11 Direct extrusion flow patterns [ Due 69 ] Fig. 3.12...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780185
EISBN: 978-1-62708-281-5
...-malic anhydride terpolymer (SMA) 103 215 80 175 Fig. 14 Example of set for shear-strength testing of plastics Fig. 20 Rockwell hardness of engineering plastics. PET, polyethylene terephthalate; PA, polyamide; PPO, polyphenylene oxide; PBT, polybutylene terephthalate; PC...