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material deformation

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Published: 30 August 2021
Fig. 24 Bevel gear with rolling plastic deformation where the active face material has been forced over the ends of the teeth More
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006941
EISBN: 978-1-62708-395-9
... Abstract This article describes the viscoelastic behavior of plastics in their solid state only, from the standpoint of the material deforming without fracturing. The consequences of viscoelasticity on the mechanical properties of plastics are described, especially in terms of time-dependencies...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006934
EISBN: 978-1-62708-395-9
... method, one of the most common to describe the material deformation and rupture time, is also discussed. Burgers power-law model creep failure Findley power-law model Larson-Miller parametric method material deformation polymers rupture time service life stress relaxation time-stress...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c0089526
EISBN: 978-1-62708-218-1
... shown in Fig. 1 and 2 . The head was cracked on the rocker-arm pan rail next to the No. 3 intake port. The crack extends into the water jacket on the rocker-arm side of the head. Visual inspection did not reveal any indication of material deformation or mishandling. The crack was opened...
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
..., errors in the specification of the material, and faulty process and their corrective measures to meet specifications. It discusses the general process of material failure analysis and special types of distortion and deformation failure. deformation distortion material failure analysis...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001755
EISBN: 978-1-62708-241-9
..., as shown in Fig. 4(b) . The broken pieces of the collar were deformed, and a yellowish material was observed on the fracture surfaces. The inner surface of the race where the balls rest was rough and worn. Deformation was also observed in the groove of the IRA. Fig. 3 Split rings of inner race...
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
... used as engineering materials is that they have high strength but also generally have the capability to respond to load (stress) by deforming. In fact, much of metallurgical engineering is concerned with balancing strength and ductility. Thus, distortion often is observed in analysis of other types...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001811
EISBN: 978-1-62708-241-9
... on the development of residual stress. Whenever the thermal expansion or contraction of a body is prevented, thermal stresses appear. The magnitude of stresses is related to the yield stress of the material at the temperature at which the deformation occurred; if these stresses are large enough, they cause yielding...
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
... in metallic materials is by slip or deformation twinning. The microscale brittle fracture mechanism is by cleavage. In metallic materials, slip and twinning deformation processes thus compete with the brittle fracture process of cleavage. All mechanisms may not operate in a given lattice (material...
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
... of these fractography concepts. Mechanisms of Deformation and Fracture At homologous temperatures low enough that creep deformation does not contribute to strain prior to or accompanying crack propagation ( T H < ~0.4 T M ), the mechanism of permanent deformation in metallic materials is by slip...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006944
EISBN: 978-1-62708-395-9
... Abstract The discussion on the fracture of solid materials, both metals and polymers, customarily begins with a presentation of the stress-strain behavior and of how various conditions such as temperature and strain-rate affect the mechanisms of deformation and fracture. This article describes...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006865
EISBN: 978-1-62708-395-9
... chains, resulting in three-dimensional networks of cross-linked molecular chains. When these types of bonds are present, an increase in temperature does not lead to plastic deformation. Thermosetting is an irreversible chemical change that occurs during processing. Materials such as vulcanized rubbers...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001471
EISBN: 978-1-62708-221-1
.... In order to determine whether heat treatment would have any appreciable effect on the notch-brittle behaviour of this material a specimen was cut from the intrados of the hook and subjected to a sub-critical anneal at 650° C. for one hour. It was then notched and when tested by slow bending deformed...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001816
EISBN: 978-1-62708-241-9
... components superplastic deformation boundary sliding dislocation creep high-strength low alloy steel decohesions traction testing grain size elongation Ti-Nb microalloyed ultrafine-grained steel (UGS steel, general) high-strength low-alloy steel (HSLA steel, general) Introduction A material...
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
... analysis of fractured surface in sample No. 4 In high strain rate, deformations like explosive deformation, depending on amount of strain and rate of strain, materials can respond to deformation through two main mechanisms: uniform or homogenous deformation and localized plastic deformation [ 12...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001738
EISBN: 978-1-62708-220-4
..., - growth-rate of these cracks, - maximum allowable deformation of aged Incoloy 800H, - time to maximum allowable deformation. Results of the Investigations Material Quality The results of the chemical analysis of the material from the bottom manifold (see table 1 ) showed that it meets...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003541
EISBN: 978-1-62708-180-1
.... When these types of bonds are present, an increase in temperature does not lead to plastic deformation. Thermosetting is an irreversible chemical change that occurs during processing. Materials such as vulcanized rubbers, epoxies, and phenol formaldehyde change chemically during processing...
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
... also occur when plastic deformation is limited to a small volume of material and not macroscale visible, while the fracture process is still microvoid coalescence. This is the case when the ductile fracture mechanism of microvoid coalescence is constrained to a plane-strain fracture mode (referred...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001546
EISBN: 978-1-62708-217-4
... Abstract A longeron assembly constructed of Alclad 2024, some parts being in the T3 condition, others in the T42 condition, failed at a rivet hole. Plastic deformation at the crack site was found, but no plastic deformation was found in similar failed components. It was concluded...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001268
EISBN: 978-1-62708-215-0
... plastically deformed while two of the deformed leafs did not meet minimal hardness or tensile requirements. Liquid penetrant testing revealed no cracks or other surface discontinuities on the leaf springs. Material sectioned from the soft spring leafs was heat-treated according to specifications...