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controlled nitriding

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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.c9001761
EISBN: 978-1-62708-241-9
... during installation were also suspected as a possible cause of failure. In order to prevent fillet fatigue failure, final grinding should be done carefully and the grinding amount must be controlled to avoid substantial removal of the nitrided layer. Crankshaft alignment during assembly and proper...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c0047846
EISBN: 978-1-62708-218-1
... was increased to 760 MPA by nitriding for 10 h at 515 deg C. Shock loading Stresses Vibration 8640 UNS G86400 Fatigue fracture The shaft shown in Fig. 1 was from a fuel-injection-pump governor that controlled the speed of a diesel engine used in trucks and tractors. Shafts in newly installed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0092155
EISBN: 978-1-62708-221-1
.... Closer control of heat treating, which would be necessary to produce the recommended higher core hardness consistently, would also eliminate the presence of blocky ferrite in the core. For maximum service life, consideration should also be given to controlling single-stage gas nitriding to minimize...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0089563
EISBN: 978-1-62708-217-4
... Abstract A lever (machined from a casting made of AISI type 410 stainless steel, then surface hardened by nitriding) that was a component of the main fuel-control linkage of an aircraft engine fractured in flight after a service life of less than 50 h. Investigation (radiographic inspection...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001847
EISBN: 978-1-62708-241-9
... grinding should be done carefully and the grinding amount must be controlled to avoid substantial removal of the nitrided layer. bearing sleeve fatigue fracture insufficient nitriding tangential stress chromium steel axial cracks beach marks microstructural analysis nitriding depth 38CrMoAl...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006816
EISBN: 978-1-62708-329-4
... and for control of grain size. During solidification, aluminum combines with nitrogen to form aluminum nitrides (Al-N) that pin grain boundaries and limit grain growth of austenite. When added to steel in specified amounts, it controls austenite grain growth in reheated steels. Aluminum-killed steels reduce grain...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0090974
EISBN: 978-1-62708-235-8
... and mechanical properties of the casting did not satisfy the design requirements. Recommendations included exerting better composition control, primarily with regard to melting, deoxidation, and nitrogen control. Better deoxidation practice was recommended to generate the more desirable Mn-S inclusion morphology...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003564
EISBN: 978-1-62708-180-1
... of thermal expansion, and high-temperature capability are properties also suited to rolling-element materials. Silicon nitride has been found to have a good combination of properties suitable for these applications. Research over the past three decades on structure, quality control, and manufacturing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001572
EISBN: 978-1-62708-236-5
... was caused by lack of temperature control during application which resulted in localized surface rehardening. It was established that there was a significant difference in the grade of the hydraulic fluid that was used in the two test programs. Use of superior grade of hydraulic fluid was recommended...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003551
EISBN: 978-1-62708-180-1
... industry corrosion resistance gas turbine components heat exchangers material selection power generation industry process control refractories structural ceramics REFRACTORY MATERIALS are used in various industrial applications to line the interior of a multitude of vessels (mainly made...
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
...-distortion failure because of a change in modulus, as may occur in a control device where accuracy depends on a predictable elastic deflection of a control element or a sensing element. For most structural materials, the curve defining the temperature dependence of elastic and plastic properties...
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
... because of a change in modulus, as might occur in a control device where accuracy depends on a predictable elastic deflection of a control element or a sensing element. For most structural materials, the curve defining the temperature dependence of elastic and plastic properties is relatively flat...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001814
EISBN: 978-1-62708-180-1
... Although not used as commonly as carburizing, nitriding is occasionally used to improve the surface properties of tool steel parts. As with any process, the conditions must be properly controlled to produce good results. Failure of nitrided components can arise if the nitriding operation produces a heavy...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006818
EISBN: 978-1-62708-329-4
... as commonly as carburizing, nitriding is occasionally used to improve the surface properties of tool steel parts. As with any process, the conditions must be properly controlled to produce good results. Failure of nitrided components can arise if the nitriding operation produces a heavy, white-etching nitride...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006821
EISBN: 978-1-62708-329-4
... resistance. Because the torque piston had not been nitrided, and the error was not identified during quality-control inspection, the piston was understrength and failed during normal operation (adapted from Ref 25 , 26 ). For additional information on nitriding, see the articles “Nitriding Structure...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003532
EISBN: 978-1-62708-180-1
... than the usual laboratory abrasive cutoff saw and use much smaller blades, typically from 7.6 to 20.3 cm (3 to 8 in.) in diameter. These blades can be of the nonconsumable type, made of copper-base alloys with diamond or cubic boron nitride abrasive bonded to the periphery of the blade, or they can...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c0089429
EISBN: 978-1-62708-223-5
..., defective manufacture, unsuitable or defective material, lack of sufficient quality control, and failure to foresee. The defendant manufacturer believed the twist drill met all specifications for M1 high-speed steel. Both the supplier and manufacturer inspected for carbide segregation, with the poorest...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006765
EISBN: 978-1-62708-295-2
... to make very precise cuts. They are smaller in size than the usual laboratory abrasive cutoff saw and use much smaller blades, typically from 7.6 to 20.3 cm (3 to 8 in.) in diameter. These blades can be of the nonconsumable type, made of copper-base alloys with diamond or cubic boron nitride abrasive...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006792
EISBN: 978-1-62708-295-2
... Subsurface stress under rolling contact Bearing Life Prediction The life prediction of rolling-element bearings is based on a statistical analysis of bearing tests performed in a controlled environment (e.g., full-film lubrication, dust free). Given that the material properties and cleanliness...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003542
EISBN: 978-1-62708-180-1
... of the surfaces. An example of this is shown in Fig. 4 . Figure 4 shows both halves of a silicon nitride bar that was broken in bending. The tensile surfaces are touching. At this low magnification, the location of the origin is clear on both halves. However, on the one half, it appears that the origin...