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Overheating

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270095
EISBN: 978-1-62708-301-0
... failed due to overheating, possibly as a result of misalignment compounded by insufficient lubrication and high speeds. aircraft engine bearings high-temperature wear microstructural analysis visual examination Summary Background Visual Examination of General Physical Features...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270148
EISBN: 978-1-62708-301-0
... and covered with red powder on one end. Investigators also observed blueing, an effect of overheating. Based on these observations and the results of SEM imaging, it was concluded that the splines in the spline bore were wearing out for lack of lubrication. quill shaft scanning electron microscopy...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220353
EISBN: 978-1-62708-259-4
... = 1.60%, Mn = 0.90%, Cr = 1.50%, Mo = 0.55%, Ni = 0.70%, and W = 0.20% overheated. (a) Coarse primary carbides (right, in the image) pearlite matrix with carbides in network on the previous austenitic grain boundaries. (b) Detail of the complex carbides morphology in the prior austenitic grain boundaries...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410439
EISBN: 978-1-62708-265-5
... shortness associated with copper and overheating and burning as occur during forging. It addresses various types of embrittlement, including quench embrittlement, tempered-martensite embrittlement, liquid-metal-induced embrittlement, and hydrogen embrittlement, and concludes with a discussion on high...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280323
EISBN: 978-1-62708-267-9
...Abstract Abstract This chapter discusses the failure of superalloy components in high-temperature applications where they are subject to the effects of microstructural changes, melting, and corrosion. It explains how overheating can deplete alloying elements and alter the composition...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630237
EISBN: 978-1-62708-270-9
... Mo). Hardness was 96–98 HRB. Scale about 0.012 in. thick is present on the inside, tending to prevent heat transfer and causing overheating to about 1525–1575 °F. Fig. 7 Thin-lip rupture in a boiler tube caused by rapid overheating. This rupture exhibits a “cobra” appearance as a result...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430149
EISBN: 978-1-62708-253-2
... to long-term overheating. (b) Thin-lip rupture in a boiler due to short-term overheating Fig. 6.2 Carbon steel boiler tube sample subjected to prolonged overheating below Ac 1 showing voids (black) along the grain boundaries and spheroidization of carbides, (a) optical micrograph, 200×; and (b...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560185
EISBN: 978-1-62708-291-4
... at 810 °C for 60 s, cooled in air, four cycles. 210 HV. Picral 100×. (h) Initial structure as in (d). Austenitized at 810 °C for 60 s, cooled in air, six cycles. 205 HV. Picral 100×. Fig. 8.14 (Part 1) Overheating: grain-boundary sulfide precipitation. 0.3% C, Ni-Cr-Mo alloy (0.32C-0.25Si...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270126
EISBN: 978-1-62708-301-0
... Recommendation To determine the extent of overheating/burning, microstructural studies and hardness measurements were made along the nozzle body from the stem end to the flange end. Figure CH26.2 shows a sketch of the nozzle body delineating zones of different microstructures and hardness. Analysis...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050293
EISBN: 978-1-62708-311-9
... Individual line overheating in power supply or heat station Clogged water line Clean. Check for proper filtering and resistivity Low pressure out of filter Clogged filter Clean or replace High return pressure (reduces flow through power supply) Return water line clogged Clean Return water line...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430147
EISBN: 978-1-62708-253-2
...: Overheating Long-term overheating Short-term overheating High-temperature creep Graphitization Dissimilar metal welds (DMW) Water-side corrosion: General corrosion/oxidation damage Under-deposit corrosion Hydrogen damage Caustic corrosion/caustic gouging Phosphate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050263
EISBN: 978-1-62708-311-9
... austenitizing temperature if possible Inspect and separate heats; run separately Internal components in power supply overheating Check cooling lines for blocked water flow Bus connections overheating Check and remove any oxidation; check tightness Electrical short in output transformer Repair...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050215
EISBN: 978-1-62708-311-9
...: Ref 1 Fig. 11.5 Cross-hole overheating: eddy-current distribution and heat nonuniformities due to presence of transverse holes. (a) Transverse hole, no plug. (b) Carbon steel part and carbon steel plug. (c) Carbon steel part and copper plug. (d) Multiholed part, no plugs. Source: Ref 5...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900185
EISBN: 978-1-62708-350-8
... of vacuum pump oil when a pressure differential occurs between the process chamber and the vacuum pump. Overheating Overheating at a workpiece corner or edge can be visually seen through the nitride furnace sight port. This likely is due to a problem with high voltage, high pressure, or a combination...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.tb.sfa.t52780109
EISBN: 978-1-62708-268-6
... can use smell and visual examinations to determine if components were subjected to mechanical overstresses or excess heat. In some cases, visual or microscopic examinations can determine if overheating was induced by overvoltage or overcurrent conditions. In some cases, hardware from the failed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770099
EISBN: 978-1-62708-337-9
...-Strength 4340 Plate Steel , Metall. Trans. A , Vol 13 , Dec 1982 , p 2239 – 2259 10.1007/BF02648395 82. McBride J.S. , Overheating—Reappraisal of a Reccurring Problem , Met. Mater. , Vol 8 ( No. 5 ), May 1974 , p 269 – 270 83. Gardiner R.W. , Effect of Overheating...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900089
EISBN: 978-1-62708-350-8
... voltage distance (glow seam); therefore, other parameters also must be changed. With a pulsed voltage, high voltage can be used without risk of overheating the part, or taking the part to the point of arc discharge. This means that the other parameters need not be changed. What happens to the heat...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430343
EISBN: 978-1-62708-253-2
...-ups, improper warm-up procedures, excessive load swings, and excessive heat inputs, which in turn lead to short-term overheating, resulting in failure of a tube. It is necessary to follow the protocol for start-up, operation, and shutdown as recommended by the manufacturer for a steam boiler...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220273
EISBN: 978-1-62708-259-4
... diffusive decomposition of austenite is too slow, the “continuous cooling” heat treatment leads to good results in shorter times. Source: Ref 13 Fig. 10.22 Low carbon steel overheated in the austenitic single-phase field. Ferrite in an incomplete network and acicular ferrite. The incomplete...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490183
EISBN: 978-1-62708-340-9
... tubes for steam generation. The once-through design is less tolerant of feedwater contaminants because many of the nonvolatile solutes are deposited inside the boiler tubes, contributing to corrosion and overheating. Contamination is therefore minimized by condensate polishing and maintenance...