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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440141
EISBN: 978-1-62708-262-4
... Abstract This chapter discusses hardening processes that involve changes in surface composition. These case hardening treatments are broadly classified into four groups: carburizing, carbonitriding, nitriding, and nitrocarburizing. Key parameters and operating considerations for each treatment...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130351
EISBN: 978-1-62708-284-6
... Abstract This chapter presents various case histories that illustrate a variety of failure mechanisms experienced by the high-strength steel components in aerospace applications. The components covered are catapult holdback bar, AISI 420 stainless steel roll pin, main landing gear (MLG) lever...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430147
EISBN: 978-1-62708-253-2
... to various defects Material defects due to selection of wrong material Forming and welding defects Design defects Failures related to cleaning and maintenance Each one of these failure mechanisms is discussed in the following sections of this chapter along with relevant case studies...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290201
EISBN: 978-1-62708-319-5
...% for water-atomized powder. The lower solids loading results in more sintering shrinkage and a larger tool size. In most cases, the median particle size is approximately 10 to 12 μm, with a tap density of 4.3 g/cm 3 . Table 10.2 compares the characteristics of several powders from ten producers. Oxygen...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270063
EISBN: 978-1-62708-301-0
... THIS SECTION CONTAINS details of various cases selected from a large number of failure investigations carried out at the National Aerospace Laboratories in the last four decades. These cases were referred by various organizations from aerospace and non-aerospace sectors. The spectrum of failures...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900167
EISBN: 978-1-62708-350-8
... Abstract Examining and evaluating the nitrided case is generally accomplished by hardness testing and microscopic examination. This chapter discusses both characterization methods, as well as sample preparation. The chapter also discusses the processes involved in the etching of the sample...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.9781627083010
EISBN: 978-1-62708-301-0
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770135
EISBN: 978-1-62708-337-9
... Abstract The design of case-hardened components is an iterative process, requiring the consideration of multiple interrelated factors. This chapter walks readers through the steps involved in selecting an appropriate material and assessing the influence of alloy composition and cooling rate...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 31 March 2024
DOI: 10.31399/asm.tb.gvar.t59360107
EISBN: 978-1-62708-435-2
... Abstract This chapter analyzes four gearbox failures, in each case identifying the underlying failure mechanism and recommending changes to reduce vibration. These include failure of an offset parallel gearbox due to gear tooth geometry error; high vibration on high-speed offset parallel...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2024
DOI: 10.31399/asm.tb.hisppa.t56110135
EISBN: 978-1-62708-483-3
... Abstract This chapter explores case studies on using induction heating for joining applications, encompassing both soldering and brazing to demonstrate versatility. Each study focuses on inductor coil design, workpiece geometry, and production quantities, emphasizing optimization due...
Image
Published: 01 August 1999
Fig. 12.20 (Part 1) Case carburizing: estimation of case depth by microscopical methods. 0.15% C (0.17C-0.05Si-0.64Mn, wt%). The structure of this carburized case in the normalized condition is shown in Fig. 12.15 (Part 1) (d) and (h) . The parenthetical carbon contents are those More
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Published: 01 August 1999
Fig. 12.20 (Part 2) Case carburizing: estimation of case depth by microscopical methods. 0.15% C (0.17C-0.05Si-0.64Mn, wt%). The structure of this carburized case in the normalized condition is shown in Fig. 12.15 (Part 1) (d) and (h) . The parenthetical carbon contents are those More
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Published: 01 June 1985
Fig. 4-40. Case crushing depends on stress applied, radius of curvature, case depth, and core hardness. More
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Published: 01 June 1985
Fig. 4-42. Extensive case crushing. Heavy loads, thin case, soft core. More
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Published: 01 September 2005
Fig. 28 Case depth profile vs. tooth pressure angle. Dashed line indicates case depth profile More
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Published: 01 December 2000
Fig. 5.26 Case depth profile vs. tooth pressure angle. Dashed line indicates case depth profile. More
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Published: 30 November 2013
Fig. 7 Torsional fracture of a 1½-inch-diameter case-hardened steel shaft, illustrating cracking of the hard, brittle case and transverse shear fracture at the right end across the relatively soft, ductile core. Hot etched to reveal twisting and distortion of the originally straight grain flow More
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Published: 30 November 2013
Fig. 8 Compression test of two steel cubes deep case hardened only on the top and bottom surfaces. A compressive force perpendicular to the case-hardened surfaces caused cracking (arrows) in the very hard (66 HRC) cases on both surfaces. The soft, ductile cores simply bulged under More
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Published: 30 November 2013
Fig. 4 Sketch of a fractured case-hardened shaft showing chevron marks pointing back toward the fracture origin. If brittle fracture continues completely around the part, the two separate fractures may form a step where they meet opposite the origin. The interior, or core, is likely to have More
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Published: 30 November 2013
Fig. 6 Stress-corrosion crack in thin neck of a cartridge case More