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surface treatment

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Image
Published: 01 January 2002
Fig. 22 AISI S7 punch that had a low surface hardness after heat treatment and was given a second carburizing treatment, then rehardened. Cracking was observed after this retreatment (the cracks have been accentuated with magnetic particles). Coarse circumferential machining marks were present More
Image
Published: 30 August 2021
Fig. 22 AISI S7 punch that had a low surface hardness after heat treatment and was given a second carburizing treatment, then rehardened. Cracking was observed after this retreatment (the cracks have been accentuated with magnetic particles). Coarse circumferential machining marks were present More
Image
Published: 15 January 2021
Fig. 34 (a) Protrusions on machined surface of 2024 aluminum after heat treatment. Original magnification: 16×. (b) Section of 2024 aluminum showing voids but no overheating. Keller’s etch. (c) Forged steel flange showing large blister after normalizing. (d) Section through blister. Nital etch More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c9001229
EISBN: 978-1-62708-223-5
...-decarburized and were free of chromium deposits. Therefore they could not have existed before heat treatment and chrome plating. It was concluded that the damage was due neither to poor quality of the sheet nor to defective stamping or heat treatment, but had occurred later either during surface treatment...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003549
EISBN: 978-1-62708-180-1
... in the environment; change in the alloy or heat treatment; change in design; use of galvanic protection; use of inhibitors; use of nonmetallic coatings and liners; application of metallic coatings; use of surface treatments, thermal spray, or other surface modifications; corrosion monitoring; and preventive...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0091674
EISBN: 978-1-62708-217-4
... hinge brackets in service for cracks and for proper maintenance of paint. Also suggested was replacing the aluminum alloy 2015-T6 with alloy 7075-T6, and surface treatment for the 7075-T6 brackets was recommended using sulfuric acid anodizing and dichromate sealing. Finally, it was also recommended...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006789
EISBN: 978-1-62708-295-2
... parameters on the material response is presented using the wear map concept, which is very useful and informative in several respects. The article concludes with guidelines for the selection of suitable surface treatments to avoid wear failures. abrasive wear fretting wear rolling-sliding wear solid...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003567
EISBN: 978-1-62708-180-1
... means for combating corrosive wear, namely, materials selection, surface treatments, and handling-environment modifications. aqueous slurry corrosive wear grinding impact wear materials selection surface treatment three-body abrasive-corrosive wear two-body corrosive wear CORROSIVE...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001178
EISBN: 978-1-62708-235-8
... a galvanic surface treatment. Such parts will rupture below the elastic limit during continuous stressing. This often occurs only after the expiration of a certain time period, and preferably at locations of stress concentrations such as changes in cross section or threads. As a rule, the hydrogen cannot...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001282
EISBN: 978-1-62708-215-0
... baths, environment Nuclear reactor components Passivation Pickling Pipe fittings Sodium-cooled reactors 316 UNS S31600 Intergranular corrosion Surface treatment related failures Pitting corrosion Background Two stainless steel components fabricated from AISI type 316 stainless steel...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0048124
EISBN: 978-1-62708-235-8
... it was reoriented to the plane normal to the major tensile axis by sufficient loading. The shot-peening procedure was altered to create adequate surface compression at all stressed points on the springs. Cracks Galling Orientation Tensile stress Valve spring steel Surface treatment related failures...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0046222
EISBN: 978-1-62708-217-4
... Shot peening Spindles Plated steel Fatigue fracture Surface treatment related failures The spindle of a helicopter-rotor blade ( Fig. 1a ) fractured after 7383 h of flight service, causing the aircraft to crash. These spindles were overhauled and inspected at intervals of 1200 h or less...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001746
EISBN: 978-1-62708-217-4
... was inadequate procedure, which resulted in bending moments being applied to the bolt threads. Acid pickling Bolts Cadmium plating Landing gear Torque 4340 UNS G43400 Surface treatment related failures Hydrogen damage and embrittlement Fig. 1 shows a failed beam from a landing gear...
Image
Published: 15 January 2021
). Comparison between surface treatments (shot peening, or SP) and coatings. Source: Ref 95 More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001520
EISBN: 978-1-62708-235-8
... Hydraulic cylinders Surface defects 15-5 PH UNS S15500 Hydrogen damage and embrittlement Surface treatment related failures Problem Over the past few years, two types of chromium-plated hydraulic cylinders have failed by cracking on their outer surfaces. In one case, the parts had a history...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001153
EISBN: 978-1-62708-225-9
... to a state of internal stress which favored fracture of the spring. Shot blasting Torsional fatigue Valve springs Spring steel Surface treatment related failures Fatigue fracture The fatigue strength of parts which are subjected to reverse bending or torsional stresses can be considerably...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047835
EISBN: 978-1-62708-217-4
... electroetched marking of the articulated rods was discontinued as a corrective measure. Aerospace engines Engine components Identification Marking 4337 UNS G43370 Fatigue fracture Surface treatment related failures The articulated rod in an aircraft engine fractured after being in operation...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001556
EISBN: 978-1-62708-218-1
... base surface of the forked eye end. The 40 mm diam forged piston rods were subjected to plating after heavy machining on the part without any stress-relieving treatment. Also, time lapses between plating and baking were varied from 3 to 11 h. The brittle cracking along forked eye-end radius portion...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c9001519
EISBN: 978-1-62708-223-5
... to change its cleaning practice from pickling to grit blasting. Bolts Pickling Vertical milling machines 4340 UNS G43400 Hydrogen damage and embrittlement Surface treatment related failures Problem The AISI 4340 alloy steel draw-in bolt and the collet from a vertical-spindle milling...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047956
EISBN: 978-1-62708-235-8
... the raceways enough to cause fluctuations in machine output. Solvent-vapor cleaning was employed as a corrective technique for removing bearing lubricant. Lubricants Solvents Vapor degreasing Bearing steel Fretting wear Surface treatment related failures During the early stages of production...