1-20 of 236 Search Results for

Intergranular fracture

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240265
EISBN: 978-1-62708-251-8
... of elevated fracture, namely, rupture, transgranular fracture, and intergranular fracture. The next section focuses on some of the metallurgical instabilities caused by overaging, intermetallic phase precipitation, and carbide reactions. Subsequent sections address creep life prediction and creep-fatigue...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610055
EISBN: 978-1-62708-303-4
... Intergranular fracture in hardened steel, viewed under the scanning electron microscope. Note that fracture takes place between the grains; thus, the fracture surface has a “rock candy” appearance that reveals the shapes of part of the individual grains. Original magnification: 2000×. Source: Ref 10...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270196
EISBN: 978-1-62708-301-0
...Abstract Abstract Fastening screws used in fuel-injection pumps failed during assembly and were examined to determine the cause. Based on observations and the result SEM fractography and hardness measurements, the screws failed by brittle intergranular fracture due to hydrogen embrittlement...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630063
EISBN: 978-1-62708-270-9
...Abstract Abstract From a fundamental standpoint, there are only two modes, or ways, in which metals can fracture under single, or monotonic, loads: shear and cleavage. There are fracture modes other than shear and cleavage. These include intergranular and quasi-cleavage fracture modes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410439
EISBN: 978-1-62708-265-5
... particle arrays on the coarse austenite grain boundaries formed at the high forging temperatures. The resulting intergranular facets, covered with microvoids formed around the MnS particles, are the characteristic fracture morphology of overheated steels ( Ref 19.22 – 19.25 ). Although etches have been...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270067
EISBN: 978-1-62708-301-0
... overload failure in superalloys. The fracture surface near the leading edge was discolored due to oxidation and exposure to high temperatures. Fig. CH2.1 Photograph of the failed LPTR blade Fig. CH2.2 Photograph of the LPTR blade showing (a) entire fracture surface and (b) intergranular...
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 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...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270070
EISBN: 978-1-62708-301-0
... subjected them to high stress concentrations in the fillet region. They also concluded that the intergranular nature of the fracture, as revealed by scanning electron fractography, pointed to hydrogen embrittlement as a contributing factor. This chapter provides a summary of the investigation along...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270115
EISBN: 978-1-62708-301-0
... sheared in the first four stages A fractured dovetail containing the two regions was carefully cut from one of the rotors. After ultrasonic cleaning, the fracture surface was observed in a SEM. The discolored half-moon-shaped region showed extensive intergranular fracture ( Fig. CH21.4...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130351
EISBN: 978-1-62708-284-6
... of the surface. The fracture topology was primarily intergranular. Fig. 13 Topographic features of the fracture surface as observed by the SEM. (a) Overall view of the fracture surface (111 μm). (b) Intergranular fracture observed on the fracture surface (10 μm) A hydrogen analysis was conducted...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270135
EISBN: 978-1-62708-301-0
... Figure CH30.4 is a SEM fractograph of the failed blade. The fracture is intergranular. The crack in the blade was opened to expose the fracture surface. The dark region in one of the corners ( Fig. CH30.5 ) shows that there was a preexisting crack that must have been oxidized. The SEM fractograph...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540047
EISBN: 978-1-62708-309-6
... or intergranular fracture) or from geometric conditions (notches, cracks, section size) that constrain deformation and thereby induce plane-strain crack growth under tension. These various mechanisms are described in section 2.4 . Fracture by glide is a ductile-type fracture from deformation along a shear...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270113
EISBN: 978-1-62708-301-0
... macroexamination, it was found that one of the fractures was fresh without any damage or corrosion and with shiny bright and dull gray areas ( Fig. CH20.2 ). On further examination in the SEM, the dull gray area showed intergranular fracture ( Fig. CH20.3 ). The brighter area showed typical brittle fracture...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270138
EISBN: 978-1-62708-301-0
... Scanning Electron Fractography Discussion Conclusion The SEM fractographs of the three zones are shown in Fig. CH31.2 to CH31.4 . Zone 1 shows a mixed mode of fracture, consisting of cleavage and intergranular fracture ( Fig. CH31.2 ). Zone 2 is characterized by striations and secondary...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080379
EISBN: 978-1-62708-304-1
...) 2352 2589 22 0.33 (a) Prestrained 20% in tension; broke at extensomer weld. Source: Ref 40 Tensile properties of alloy 601 specimens obtained from the area near the main fracture in the alloy 601 recuperator shell that suffered intergranular through-wall cracking after 2.5 years...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630081
EISBN: 978-1-62708-270-9
... or intergranular. In most cases it is necessary to study the fracture surface with a scanning electron microscope to distinguish the fracture mode. Cleavage fractures are characterized by splitting of the crystals, or grains, along specific crystallographic planes without respect to the grain boundaries...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250039
EISBN: 978-1-62708-345-4
.... , The Relationship of Microstructure to Fracture Morphology and Toughness of Hardened Hypereutectoid Steels , Case Hardened Steels: Microstructure and Residual Stress Effects , TMS/AIME, 1984 , p 33 – 56 17. Hyde R.S. , “Quench Embrittlement and Intergranular Oxide Embrittlement: Effects on Bending...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610415
EISBN: 978-1-62708-303-4
...) and (c) Stress-rupture voids near the fracture. Source: Ref 6 Fig. 17 High-temperature failure modes. Source: Ref 7 Fig. 18 Intergranular failure in nickel-base alloy. Inconel 751, stress rupture at 1350 °F, 55 ksi, 125 h. Source: Ref 8 Fig. 19 Creep cavitation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030126
EISBN: 978-1-62708-282-2
... potentials Fig. 19 Time/temperature/sensitization curves determined by EPR tests on type 304 stainless steel alloys of variable carbon contents Fig. 21 Percent intergranular fracture, reduction of area, and strain to failure of iron, iron + phosphorus, and iron + phosphorus + manganese...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090001
EISBN: 978-1-62708-266-2
... propagation can be either intergranular or transgranular; sometimes both types are observed on the same fracture surface. Crack openings and the deformation associated with crack propagation may be so small that the cracks are virtually invisible except in special nondestructive examinations. As the stress...