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microcracking

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770099
EISBN: 978-1-62708-337-9
... Abstract This chapter is a study of the microstructure of case-hardened steels. It explains what can be learned by examining grain size, microcracking, nonmetallic inclusions, and the effects of microsegregation. It identifies information-rich features, describing their ideal characteristics...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770001
EISBN: 978-1-62708-337-9
... affecting its service life. The microstructural features referred to are internal oxidation, decarburization, free carbides, retained austenite, and microcracks in the martensite. Further modifications to the martensite in particular can be effected by tempering, and the proportions of austenite and...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770011
EISBN: 978-1-62708-337-9
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770037
EISBN: 978-1-62708-337-9
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770051
EISBN: 978-1-62708-337-9
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770077
EISBN: 978-1-62708-337-9
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770135
EISBN: 978-1-62708-337-9
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770171
EISBN: 978-1-62708-337-9
.... Standards: ANSI/AGMA permit refrigeration following the tempering operation, and it is followed by a retemper. The purpose is to obtain a 1 to 2 HRC increase of hardness. Refrigeration to transform high amounts of retained austenite (say 50%) should not be considered, as this might cause microcracking...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770199
EISBN: 978-1-62708-337-9
... working induces hardening in the worked layers. Excessive working with heavy pressures can induce microcracks, which might develop into micro-tears or even flaking at the surface. These defects are less likely to occur in hard materials; nevertheless, their formation is to be avoided, even though the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.9781627083379
EISBN: 978-1-62708-337-9
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230339
EISBN: 978-1-62708-298-3
... operations are conducted and describes the effect of tooling materials, cutting speeds, metal-removal rates, and other variables. It also explains how to assess and remove surface damage caused by machining such as microcracks and twins. beryllium machining surface damage References...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080437
EISBN: 978-1-62708-304-1
... at grain boundaries and other interfaces, causing the methane gas pressure to build up in the steel. This eventually results in development of microcracks and microfissures. At the same time, carbon is being removed from iron carbide (Fe 3 C) as a result of this chemical reaction, leading to...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560221
EISBN: 978-1-62708-291-4
... precipitation of a carbide phase on a particular crystallographic plane during tempering ( Ref 10 ). A third notable feature is the presence of cracks in the plates, a phenomenon that is discussed in detail in the section “ Microcracks in Martensite ” in “ Transformation of Hypereutectoid Steels ” in this...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870401
EISBN: 978-1-62708-314-0
... are affected to some degree. If liquid water is trapped in microcracks or delaminations, since water expands when it freezes, it can form larger macrocracks or delaminations when the composite is subjected to freeze-thaw cycles. Absorbed moisture can cause the composite to swell, producing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780404
EISBN: 978-1-62708-281-5
... analysis is achievable from examining deformation events within the resolution of optical and scanning electron microscopy (SEM). Irreversible deformation mechanisms in polymers may fall into two basic categories: dilatational, such as crazes, voids, and microcracks; or nondilatational, such as shear bands...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870201
EISBN: 978-1-62708-314-0
... 1987 • Cann M.T. and Adams D.O. , Effect of Part-Tool Interaction on Cure Distortion of Flat Composite Laminates , 46th International SAMPE Symposium , May 2001 , p 2264 – 2277 • Dharia A.K. , Hays B.S. , and Seferis J.C. , Evaluation of Microcracking in...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410063
EISBN: 978-1-62708-265-5
.../0025-5416(70)90026-1 5.46 Marder A.R. and Benscoter A.O. , Microcracking in Fe-C Acicular Martensite , Trans. ASM , Vol 61 , 1968 , p 293 – 299 5.47 Marder A.R. , Benscoter A.O. , and Krauss G. , Microcracking Sensitivity in Fe-C Plate Martensite , Metall...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410499
EISBN: 978-1-62708-265-5
.... , Microcracking in Fe-C Acicular Martensite , Trans. ASM , Vol 61 , 1968 , p 293 – 299 21.31 Apple C.A. and Krauss G. , Microcracking and Fatigue in a Carburized Steel , Metall. Trans. , Vol 4 , 1973 , p 1195 – 1200 10.1007/BF02644511 21.32 Brobst R.P. and Krauss G...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400049
EISBN: 978-1-62708-258-7
... on the sulfide particles. The matrix is plate martensite (note the microcracks—see stubby arrows). 4% picral and HCl etch. 500× Fig. 3.34 A SEM micrograph of a fracture surface of the 0.7% C-3% Cr steel forging in Fig. 3.33 showing a manganese sulfide dendrite. 2000× Also in Fig...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270031
EISBN: 978-1-62708-301-0
..., and development of a microcrack in or near the inelastic deformation zone. The stresses drop to zero on the newly formed microfracture surfaces. The applied load is redistributed to sound material ahead of the crack tip, which continues to deform inelastically to microfracture, and the process repeats...