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needle-like martensite

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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001844
EISBN: 978-1-62708-241-9
... gear fracture manufacturing defect chromium steel chevron marks needle-like martensite microhardness measurements case depth 30CrMnTi steel (chromium alloy steel) Background Experiments and Methods Observation Results Failure Causes Analysis Conclusions Recommendations...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001532
EISBN: 978-1-62708-232-7
... of such cracking of carbides has been attributed to thermal reasons or, more likely, could be mechanically induced by work roll/backup roll contact stresses, or by rolling stresses. The microhardness values of martensite, carbide, and graphite phases were determined for all of the failed roll samples and are shown...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001805
EISBN: 978-1-62708-241-9
... accommodate plastic deformation. In the case of scissors, the intended use requires high hardness to enhance cutting edge retention and reduce wear. However, these inherent strength requirements may result in susceptibility to failure modes like stress corrosion cracking, depending on the use conditions...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001191
EISBN: 978-1-62708-225-9
..., but in a fine-grained hardened steel like this the fracture-faces due to stress-cracking and overload fracture look the same as this. The forced rest fracture has a satin-like fine structure, which proves a fault-free hardening. Fig. 1 Inner ring with breakouts from middle flange. 0.8× Fig. 2...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001207
EISBN: 978-1-62708-235-8
... the cutting of threads because of the presence of had spots. The seams showed crater-like indentations on the hard spots ( Fig. 1 ) which left shiny worn areas during the cutting of threads ( Fig. 2 ). Their heterogeneous structure is shown macroscopically in Fig. 3 which represents a longitudinal section...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001759
EISBN: 978-1-62708-241-9
... 1117 material and subjected to different heat-treatment procedures like carburizing, carbonitriding, and liquid nitriding. These samples were tested for chemical and metallurgical analysis, and subjected to hardness test. Chemical and Metallurgical Analysis Push-Out Load Test Endurance Test...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001826
EISBN: 978-1-62708-241-9
... a moderately alkaline environment to keep the protective oxide film in place [ 1 ]. The waterside corrosion is greatly influenced by the amount of corrosion product deposited on the wall of the tube. The deposit buildups are most likely to occur where flow is disrupted by bends; welds with backing rings...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001810
EISBN: 978-1-62708-180-1
.... Rotational creep occurs principally on the inner ring and may result from the ring being initially loose on the shaft as a result of fitting errors or from plastic or elastic deformation due to either abnormal loads or severe imbalance in service. Under rotational-creep conditions, the assembly behaves like...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006834
EISBN: 978-1-62708-329-4
... ISO 492 ISO 1132-2:2001 Cylinder rollers CRB Tapered rollers TRB Spherical rollers SRB Axial Balls ATBB ISO 199 Cylinder rollers ATRB Others Needles NRB ISO 1206 Further fstandards Radius … ISO 582 Source: Ref 1 , 4 Radial clearance groups corresponding...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006760
EISBN: 978-1-62708-295-2
... it is appropriate to speculate on which is thought to be more likely, as long as the assumptions underlying the speculations are documented: Crack tips often provide more information than wide-open cracks. Look for residual-stress indicators when sectioning ( Fig. 3 ). Document rub marks and nonuniform...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003562
EISBN: 978-1-62708-180-1
... are extruded Fig. 7 Fracture in an orthopedic bone plate. A failure was caused by fretting damage (loss of protective oxide layer) in the countersunk portion of the plate. Fig. 21 Cross-sectional view of a white layer of martensite produced by fretting of a carbon steel connecting rod...
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
... on component-like structures under the real loading history. Alternative tests with simplified block programs are conducted as well, but in most cases, these block tests do not simulate the real service conditions and will usually considerably overestimate the lifetime (up to a factor of 10) compared...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001815
EISBN: 978-1-62708-180-1
... worm-gear set, the worm is constructed so that it resembles an hourglass in profile. Such a worm partly envelops the gear, and its threads engage the teeth of the gear throughout the entire length of the worm. The teeth of both the worm and the gear have straight-sided profiles like those of rack teeth...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003544
EISBN: 978-1-62708-180-1
... if continued for a large proportion of the normal life of a material. However, this is not true for a high overstress. Advantages and Limitations The stress-life approach seems best applied to components that look like the test samples and are approximately the same size (this satisfies the similitude...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006829
EISBN: 978-1-62708-295-2
... mating surfaces; initially, it is adhesive in nature, and vibration or small-amplitude oscillation is an essential causative factor. Fretting generates wear debris, which oxidizes, leading to a corrosion-like morphology. This article focuses on fretting wear related to debris formation and ejection...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003522
EISBN: 978-1-62708-180-1
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006757
EISBN: 978-1-62708-295-2
... 14. Krauss G. , Steels: Heat Treatment and Processing Principles , ASM International , 1990 15. Roberts C.S. , Effect of Carbon on the Volume Fractions and Lattice Parameters of Retained Austenite and Martensite , Trans. AIME , Vol 197 , 1953 , p 203 – 204 10.1007...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003508
EISBN: 978-1-62708-180-1
... casting gray cast iron low-alloy steel malleable irons pressure die casting semisolid casting squeeze casting FAILURES OF CASTINGS, like the failures of wrought materials, can occur from service conditions, improper design and/or materials selection, manufacturing deficiencies, or a combination...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006831
EISBN: 978-1-62708-329-4
..., chills, chaplets, etc. B 113 (a) Like B 111, but accompanied by slag inclusions (G 122) Slag blowholes B 120 Class B 100 cavities located at or near the casting surface, largely exposed or at least connected with the exterior B 121 (a) Exposed cavities of various sizes...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.9781627083294
EISBN: 978-1-62708-329-4