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brittle fracture

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140189
EISBN: 978-1-62708-264-8
... Abstract The design requirements for mechanical shafts, pinions, and gears often call for features with very hard surfaces (to resist wear) based on a softer core (to avoid brittle fracture). This chapter explains how to selectively harden steel by diffusing carbon and nitrogen atoms into the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.9781627083096
EISBN: 978-1-62708-309-6
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130241
EISBN: 978-1-62708-284-6
... Abstract This chapter discusses the various factors influencing the evaluation of fatigue fracture of nitrided layers. It begins by describing the problems of enhancing the fatigue resistance of machine components. The significance and detailed assessment of the effect of a structural flaw are...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130043
EISBN: 978-1-62708-284-6
... Abstract This chapter provides an overview of the possible mechanisms of failure for heat treated steel components and discusses the techniques for examining fractures, ductile and brittle failures, intergranular failure mechanisms, and fatigue. It begins with a description of the general...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550511
EISBN: 978-1-62708-307-2
... before any plastic deformation can occur. Stress concentrations leading to brittle failure can be minute surface or interior cracks (microcracks) or internal pores, which are virtually impossible to eliminate or control. Plane-strain fracture toughness ( K Ic ) values for ceramic materials are much...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130111
EISBN: 978-1-62708-284-6
... brief review of failure types from fracture, distortion, wear, and corrosion. Fracture is a common damage feature, because the vast majority of mechanical failures involve crack propagation—typically classified as ductile, brittle, and fatigue, as briefly described in more detail. Distortion, wear, and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130087
EISBN: 978-1-62708-284-6
... characteristics of the fragments are not systematically presented. Armed with information on these basic fundamental loading geometries, one can learn to predict macroscale fracture appearance in ductile and brittle materials given different loading conditions, along with the more well-known fracture surface...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170123
EISBN: 978-1-62708-297-6
... the basic hardenability of a specific steel composition. The composition of a steel, as well as its microstructure and processing history, significantly affect both the ductile-to-brittle transition temperature range and the energy absorbed during fracture at any particular temperature...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140175
EISBN: 978-1-62708-264-8
... nickel and chromium, and a nice discussion of these irons may be found in Ref 16.6 . The fracture surface of a white iron runs along the brittle Fe 3 C component of the iron. This component fractures by a cleavage mechanism and produces a bright white surface, and thus the name for these irons. Fig...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870351
EISBN: 978-1-62708-314-0
... Abstract This chapter discusses composite testing procedures, including tension, compression, shear, flexure, and fracture toughness testing as well as adhesive shear, peel, and honeycomb flatwise tension testing. It also discusses specimen preparation, environmental conditioning, and data...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280211
EISBN: 978-1-62708-267-9
... location influence measured properties. It also provides information and data on the physical and mechanical properties of superalloys, particularly tensile strength, creep-rupture, fatigue, and fracture, and discusses related factors such as directionality, porosity, orientation, elongation, and the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.tb.sfa.t52780109
EISBN: 978-1-62708-268-6
... or fracture in a brittle manner, the failure analysis team should consider the temperatures the component experienced both in operation and in storage. It usually makes sense to contact the plastic material source to confirm that the material is compatible with the operating and storage environments...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.9781627082709
EISBN: 978-1-62708-270-9
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140039
EISBN: 978-1-62708-264-8
... figure also shows that the diameter of the bar at the fracture surface of a brittle failure remains close to its original value, while that of the ductile failure is reduced. This reduction in diameter by plastic flow near the fracture surface is referred to as necking, and it develops in ductile metals...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.9781627082563
EISBN: 978-1-62708-256-3
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.tb.sfa.t52780193
EISBN: 978-1-62708-268-6
..., replacement with known good component Electronic subassembly performs outside specified range Visual examination, multimeter testing, subassembly testing, replacement with known good component Electrical disconnect Visual examination, magnification, optical microscopy Fractures Visual and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130503
EISBN: 978-1-62708-284-6
... American Welding Society. See also Table 1 . Source: Ref 1 The most insidious discontinuities are those that cause brittle cracking due to metallurgical origins, such as HAC, solidification cracking, or stress-corrosion cracking. Such brittle failures are characterized by fracture surfaces...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130001
EISBN: 978-1-62708-284-6
... to brittle fracture, corrosion, or fatigue. Examples of peak stresses are thermal stresses in the austenitic steel cladding of a carbon steel vessel, thermal stresses in the wall of a vessel or pipe caused by rapid change in temperature of the contained fluid, and the stress at a local structural...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130285
EISBN: 978-1-62708-284-6
... fracture through the tempered martensite of specimens tempered in the range of 260 to 370 °C. First is brittle transgranular fracture, which results from the decomposition of retained austenite in the second stage of tempering, as mentioned previously. Films of retained austenite between laths of...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130351
EISBN: 978-1-62708-284-6
... brittle and starts to melt at the eutectic temperature of 880 °C (1616 °F). Figures 16 and 17 show the MLG linear actuating piston rod cylinder components as received for examination. Two circumferential fractures were located approximately 165 and 215 mm (6½ and 8½ in.) from the mono-ball end of...