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precipitate shearing

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Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001051
EISBN: 978-1-62708-161-0
... strengthening mechanism. With the mean free edge-to-edge distance in the γ matrix between the precipitates being smaller than the average precipitate size itself, dislocation shearing of the γ′ particle is favored over Orowan dislocation looping around the γ′ particles. Fig. 12 Influence of alloying...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005455
EISBN: 978-1-62708-196-2
.... For this model, the Guinier-Preston-Bagaryatskii zones have been included in the solid-solution effects, because they are difficult to quantify. The precipitation-strengthening effect includes both looping and shearing and is based on some of the emerging models of precipitation distributions and their hardening...
Book Chapter

By Sammy Tin
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005404
EISBN: 978-1-62708-196-2
... exponent ( n ) tends to range between 3 and 10; μ is the shear modulus. This mode of creep involves glide of dislocations but is limited by climb of the dislocations over obstacles that inhibit further plastic flow. The obstacles may be precipitates or dislocation locks that impede their ability to glide...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002354
EISBN: 978-1-62708-193-1
... parameters determining particle-dislocation interaction are the size and distance of the precipitates. If the strengthening particles are coherent, small, and close-spaced, they are cut by dislocations as a result of the resolved shear stress. This process is typical of underaged alloys. Overaging leads...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003543
EISBN: 978-1-62708-180-1
..., fibrous fracture• Shear lips • Little or no distortion• Flat fracture• Bright or coarse texture, crystalline, grainy• Rays or chevrons point to origin • Flat progressive zone with beach marks• Overload zone consistent with applied loading direction• Ratchet marks where origins join • Multiple brittle...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002410
EISBN: 978-1-62708-193-1
... that the cracking occurs on multiple {111} planes. Source: Ref 103 Fig. 10 Stereo view of precipitate avoidance morphology on crack surface. Gamma-prime precipitates are clearly visible. Source: Ref 103 Fig. 11 Micrographs showing fracture surfaces of CMSX-2 specimens with [010] and [110...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001032
EISBN: 978-1-62708-161-0
... in practice since the 1960s to control the microstructure and properties of low-carbon steels. Most of the early developments were related to plate and sheet products in which microalloy precipitation, controlled rolling, and modern steelmaking technology were combined to increase strength significantly...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006778
EISBN: 978-1-62708-295-2
... consistent with applied loads • Dull, fibrous fracture • Shear lips • Little or no distortion • Flat fracture • Bright or coarse texture, crystalline, grainy • Rays or chevrons point to origin • Flat progressive zone with beach marks • Overload zone consistent with applied loading direction • Ratchet marks...