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microexamination

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Published: 01 January 2002
Fig. 13 Weld in AISI type 316 heat-exchanger shell that failed due to hot shortness. (a) Longitudinal section of weld; the dotted line indicated how the sample was sectioned for microexamination. Approximately 2 1 2 ×. (b) Micrograph of section from weld. Hot shortness resulted More
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Published: 30 August 2021
Fig. 13 Weld in AISI type 316 heat-exchanger shell that failed due to hot shortness. (a) Longitudinal section of weld; dotted line indicates how the sample was sectioned for microexamination. Original magnification: ~2½×. (b) Micrograph of section from weld. Hot shortness resulted More
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003781
EISBN: 978-1-62708-177-1
..., and tin, which are present in the microstructure of zinc alloys. The article also provides information on microexamination that helps to determine the dendrite arm spacing, as well as the grain size, grain boundaries, and grain counts. aluminum cadmium copper dendrite arm spacing etching grain...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003774
EISBN: 978-1-62708-177-1
...Abstract Abstract Magnesium and its alloys are among the most difficult metals to prepare for metallographic examination. This article describes specimen preparation processes, including sectioning, mounting, grinding, and polishing. It discusses macro and microexamination techniques as well...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003768
EISBN: 978-1-62708-177-1
...Abstract Abstract This article focuses on the specimen preparation procedures of austenitic manganese steels: sectioning, mounting, and grinding. It provides information on macroexamination and microexamination of a fracture surface, the microstructure and special features of austenitic...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003779
EISBN: 978-1-62708-177-1
... information on the macroexamination and microexamination for these alloys. It concludes with a discussion on the several metallographic techniques developed for specific purposes, such as recrystallization studies and microstructure/fracture topography correlations. alpha alloys alpha-beta alloys beta...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003770
EISBN: 978-1-62708-177-1
.... This article provides information on the specimen preparation procedures, macroexamination, microexamination, and microstructures of beryllium, copper-beryllium alloys, as well as nickel-beryllium alloys. It also discusses health and safety measures associated with the specimen preparation of beryllium...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003777
EISBN: 978-1-62708-177-1
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003780
EISBN: 978-1-62708-177-1
... by solidification and mechanical working processes. depleted uranium etching grain structure inclusions macroexamination mechanical working metal flow geometry metallography microexamination microstructure physical metallurgy segregation pattern solidification thin foils transmission electron...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003797
EISBN: 978-1-62708-177-1
... spots on the fracture surface of 86WC-8(Ta,Ti,Nb)C-6Co alloy. 500×. Microexamination Qualitative metallography in cemented carbides consists of evaluation of apparent porosity and carbide grain size. Apparent porosity is evaluated on the as-polished specimen using the ASTM B 276 procedure...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001832
EISBN: 978-1-62708-181-8
... microexamination strategy can be determined. Macroexamination can be used to identify areas of heavy burnishing in which opposite halves of the fracture have rubbed together and to identify regions covered with corrosion products. The regions least affected by this kind of damage should be selected...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003247
EISBN: 978-1-62708-199-3
... copper and copper alloys for macroexamination and microexamination is subject to the same general rules and recommendations as those that apply to preparation of specimens of other metals. Technique for Macroexamination Specimens for macroscopic examination are extracted from larger masses using...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003765
EISBN: 978-1-62708-177-1
..., the number of eutectic cells also increases, and their microstructure changes, promoting radial-spherical shape ( Ref 2 ). Preparation for Microexamination Preparation of cast iron specimens for microstructural examination is difficult due to the need to properly retain the very soft graphite phase...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003245
EISBN: 978-1-62708-199-3
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001431
EISBN: 978-1-62708-173-3
...  Macroexamination tests  Macroetch tests  Microexamination tests Nondestructive tests Visual inspection Liquid penetrant inspection Magnetic particle inspection Radiographic inspection Tests to evaluate the mechanical or corrosion properties of weldments are described in detail...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003773
EISBN: 978-1-62708-177-1
.... Liquid coolants minimize the possibility of overheating. The cutoff wheels in such machines produce specimens with surfaces that often are smooth enough to require only light grinding and polishing prior to microexamination. Lead storage batteries account for approximately 75% of lead alloy use ( Ref...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006342
EISBN: 978-1-62708-179-5
... containing fine cell structures. Etching for Microexamination Etching is normally done by holding the specimen with a pair of tongs and immersing it, with intermittent agitation, in the desired reagent for a suitable period of time. Table 3 gives some of the more common etching reagents employed...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003766
EISBN: 978-1-62708-177-1
... heated to produce a blue temper color, because the uncolored oxides exhibit strong contrast against the dark fracture. Microexamination Sectioning Relatively soft specimens (less than 35 HRC) can be cut using band saws or hacksaws. However, such operations produce a substantial zone...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003622
EISBN: 978-1-62708-182-5
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001817
EISBN: 978-1-62708-180-1