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surface damage

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003190
EISBN: 978-1-62708-199-3
... currents Excessive energy densities during processing Figure 6 illustrates an alteration that can occur as a result of a machining process and that is often very damaging to material properties. Steels such as AISI 4340 when ground will show an altered surface layer consisting of rehardened and...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001239
EISBN: 978-1-62708-170-2
... Abstract Thermal phenomena play a key role in the mechanics of surface finishing processes. This article provides information on the analysis and measurement of temperatures and associated thermal damage generated by finishing processes that are essential to the production of engineered...
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
... some years prior to the later fracture, the surface of which is covered by a less adherent rust coating. As another example, when damage occurs by electrical discharge (for example, if a crane touches a power line or if welding has been done on a component on a vehicle while the electrical...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006784
EISBN: 978-1-62708-295-2
.... Hydrogen damage is a complex phenomenon that takes on several forms, and many mechanisms have been proposed, which include ( Ref 1 ): Hydrogen pressure theory Reduced surface energy (surface adsorption) theory Decohesion theory Enhanced plastic flow theory Decarburization (hydrogen attack...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006756
EISBN: 978-1-62708-295-2
... same wording is used to describe both the failure mode and mechanism. For example, corrosion pitting describes a damage mode because the surface of a material contains hemispherical pits. Pitting is also a possible damage mechanism in some systems. For example, in boiler tubing a pitting damage...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003969
EISBN: 978-1-62708-183-2
... illustrated. corrosion damage corrosion mechanisms corrosion of metals and alloys corrosion resistant material AS IS APPARENT from Volumes 13A and 13B of the ASM Handbooks, all materials will corrode given certain circumstances, conditions, and time. Although much is understood about the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003055
EISBN: 978-1-62708-200-6
... ceramics that were surface ground with a resin bonded diamond wheel. HPSN, hot-pressed silicon nitride. Source: Ref 13 Residual stress and surface damage are two factors that have attracted significant attention in the grinding of ceramics ( Ref 14 , 15 , 16 , 17 ). Figure 9 compares the...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001319
EISBN: 978-1-62708-170-2
... development of alternative surface preparation methods. Many of the common methods mentioned are accompanied by safety and environmental risks, increased risk of part damage, and expensive pollution and disposal problems. Abrasion only increases the surface area of the part prior to adhesive bonding, and it...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003213
EISBN: 978-1-62708-199-3
... Abstract Metal surfaces must often be cleaned before subsequent operations to remove unwanted substances such as pigmented drawing compounds, unpigmented oil and grease, chips and cutting fluids, polishing and buffing compounds, rust and scale, and miscellaneous contaminants. The article...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001310
EISBN: 978-1-62708-170-2
... (1 to 2 mils of metal removal) is required to restore corrosion resistance, and such pickling can seriously alter the mechanical finish produced. Surface contamination by plastic, chopped aluminum, or glass bead media is less damaging and the effects can be easily removed by subsequent mild etching...