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contact fatigue wear

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Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005677
EISBN: 978-1-62708-198-6
... circumstances is provided in Table 3 . Table 3 Classification of wear situations in dentistry Intraoral wear event Type of wear Lubricant Substrate Opponent Abrasive Physiologic causes of wear Noncontact wear 3-body Saliva/food Tooth/restoration … Food Direct contact wear 2...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003030
EISBN: 978-1-62708-200-6
... application or to investigate a particular wear process. It describes the wear tests conducted with/without abrasives and explains the concept of PV limit (where P is contact pressure and V is velocity). The article concludes with references and tables of friction and wear test data for polymeric materials...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003976
EISBN: 978-1-62708-185-6
..., and dwell time (contact time under load) are critical to the success of hot forming operations. Acceptable die lives can be obtained by proper control of processing factors. Forming equipment influences the wear process by imposing predetermined mechanical time histories on the process...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005654
EISBN: 978-1-62708-198-6
... intercrystalline manner. The wire was made of 304 stainless steel in the sensitized condition and was in contact with 316L components. Fatigue failure was also noted in bone screws with a high inclusion content. She also describes other examples where implants of high quality that met applicable standards suffered...
Book Chapter

By Peter J. Blau
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003242
EISBN: 978-1-62708-199-3
... describe sliding wear other than the other than abrasive, fretting, fatigue, and polishing wear. Repeated stressing of a surface by sliding contact can cause cracks to nucleate and grow, producing the flake-like delaminations and pitting that are associated with fatigue wear. Fretting wear is a special...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003102
EISBN: 978-1-62708-199-3
..., hard surface that has good resistance to wear but does not abrade the contacting part. Sheaves, wear plates, and castings for railway track work are common applications of this type. Manganese steel also has been used in some water-lubricated bearings. In applications that involve heavy blows or...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006269
EISBN: 978-1-62708-169-6
... temperature on surface characteristics and properties of the α + β titanium alloy. R a , average surface roughness; Z , linear wear; t , time of friction; i , anodic current density; U k , corrosion potential. Method used: three roller-taper and contact pressure of 200 MPa (29 ksi); corrosion...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005657
EISBN: 978-1-62708-198-6
... lower hardness values. Fretting is a corrosion-assisted wear process between two metal surfaces that results in surface damage, pitting, and increased susceptibility to fatigue crack initiation. Fretting occurs when cyclic micromotion between the contacting metal surfaces results in adhesive wear...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003104
EISBN: 978-1-62708-199-3
... relative motion between that surface and one or more contacting substances and generally consists of a progressive loss of material from the wearing surface. It may include oxidation, corrosion, creep, fatigue, frictional effects, battering from impact, pseudomachining due to rough surfaces, and the...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005323
EISBN: 978-1-62708-187-0
... properties and specifications of test bar. It discusses the properties of gray iron, such as fatigue limit, pressure tightness, impact resistance, machinability, and dimensional stability, at both room and elevated temperature. Wear behavior of gray iron castings during sliding contact under conditions of...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003225
EISBN: 978-1-62708-199-3
... phase attacked EDS (c) can help identify corrodent Wear debris and/or abrasive can be characterized as to morphology and composition Rolling contact fatigue looks like wear in early stages Multiple intergranular fissures covered with reaction scale Grain faces can show porosity...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005668
EISBN: 978-1-62708-198-6
... article illustrates practical tribocorrosion setup that allows the user to perform wear tests in corrosive environments under well-defined electrochemical conditions and at controlled temperature. It describes the effect of changes in electrical contact resistance on tribological mode. The article...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006471
EISBN: 978-1-62708-190-0
... Straight-beam contact-type Billets: inclusions, stringers, pipe Forgings: inclusions, cracks, segregations, seams, flakes, pipe Rolled products: laminations, inclusions, tears, seams, cracks Castings: slag, porosity, cold shuts, tears, shrinkage cracks, inclusions Fatigue cracks, corrosion...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003975
EISBN: 978-1-62708-185-6
... precision forging punching safety precautions thermal fatigue trimming dies vertical press wear resistance DIE MATERIALS used for hot forging include hot-work tool steels (AISI H series), some alloy steels such as the AISI 4300 or 4100 series, and a small number of proprietary, lower-alloy...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003162
EISBN: 978-1-62708-199-3
... encountered by mill hammers, digging tools, extrusion screws, cutting shears, parts of earth-moving equipment, ball mills, and crusher parts. It is also used to control the wear of unlubricated or poorly lubricated metal-to-metal sliding contacts such as control valves, undercarriage parts of tractors and...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003061
EISBN: 978-1-62708-200-6
... particles entrained in fluids or gases striking a surface of a wear plate. Examples would be coal, gravel, ore, or grain striking a chute, an elbow, or a fan blade in a materials handling system. Rubbing wear involves sliding abrasion of two materials in contact with each other, with or without abrading...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003187
EISBN: 978-1-62708-199-3
... called crater wear. Along the clearance surface, the tool motion and high normal stress have increased the area of contact between the tool and work, producing flank wear. Lastly, the cutting edge radius has increased. Figure 6 shows the characteristic wear surfaces on a turning tool insert, end mill...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000608
EISBN: 978-1-62708-181-8
... ), fracture was completely intergranular. 1000× Fatigue failure of shaft on bucket elevator used to handle asphalt. Fracture of the AISI 4340 part (330 HB) initiated at an area of fretting wear in the keyway. The bending stress was calculated at just 131 MPa (19 ksi), but the stress riser due to...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003241
EISBN: 978-1-62708-199-3
... testing mechanical testing shear testing stress-strain curves tension testing torsion testing HARDNESS is a term that has different meanings to different people: it is resistance to penetration to a metallurgist, resistance to wear to a lubrication engineer, a measure of flow stress to a...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003167
EISBN: 978-1-62708-199-3
... Influence of bearing material properties on wear damage mechanisms Bearing materialproperty Damage mechanisms counteracted Causes Compatibility Adhesive wear Asperity contact, surface roughness, inadequate oil film Conformability Adhesive wear, surface fatigue wear Misalignment, edge...