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Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030043
EISBN: 978-1-62708-349-2
... materials for microscopic analysis, there are many types of artifacts that can result from any of the steps, from rough grinding to final polishing. In the grinding and polishing steps, common artifacts that may be created include scratches, fiber pull-out, matrix smears, streaks, erosion of different...
Series: ASM Technical Books
Publisher: ASM International
Published: 23 January 2020
DOI: 10.31399/asm.tb.stemsem.9781627082921
EISBN: 978-1-62708-292-1
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850001
EISBN: 978-1-62708-260-0
.... The streaks, which consist of martensite, have a hardness of 46 to 58 HRC (Rockwell hardness on the C scale) while the matrix hardness is less than 20 HRC. Figure 1-22 Macroetching with 10% nital was used to reveal carbide segregation in polished sections from various sizes of rounds of T1 high...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260213
EISBN: 978-1-62708-336-2
... give rise to areas of critical deformation, which form visible streaks on the surface of the finished product. Skill and experience are required to obtain uniform metal flow through all parts of the die, especially with unsymmetrical shapes and different wall thicknesses. The resistance to flow...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260149
EISBN: 978-1-62708-336-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030096
EISBN: 978-1-62708-282-2
... . Source: Ref 10 Fig. 33 Micrograph showing preferential attack of δ-ferrite stringers in type 316L stainless steel weld metal. 250×. Source: Ref 10 Fig. 34 Rust-colored streaks transverse to horizontal weld seams in the sidewall of a type 316L stainless steel tank. Source: Ref 10...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260119
EISBN: 978-1-62708-336-2
... segregation (i.e., variations in the concentration of dissolved alloying elements) results in a streaked texture after anodizing. Heterogeneous grain- and cell-boundary precipitation give structural markings and, in unfavorable dispersions, reduce the quality of the finish of bright-finish sections...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260087
EISBN: 978-1-62708-336-2
..., the bearing length needs to be smaller, and vice versa. Sharp changes in bearing may cause streaks, due to uneven flow of the metal or to inadequate filling of the die opening. Variations in bearing lengths at the junction points must be properly blended to prevent streaking. Three different types...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820043
EISBN: 978-1-62708-339-3
... Fig. 32 Rust-colored streaks transverse to horizontal weld seams in the sidewall of a type 316L stainless steel tank. Source: Ref 18 Fig. 33 Close-up of the rust-colored streaks shown in Fig. 32 . Source: Ref 18 Fig. 31 Micrograph showing preferential attack of δ-ferrite...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270053
EISBN: 978-1-62708-301-0
.... The conventional commercial method of testing by rubbing the pieces against an abrasive surface failed to reveal any streak of gold. Fig. 7.2 (a) Innocent-looking electric irons. (b) Gray pieces inside the irons containing 87% gold Next, the pieces were taken to a metallurgical laboratory...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300163
EISBN: 978-1-62708-323-2
... on harder materials (like steel) there is a tendency for adhesive transfer. If the edge of a copper coin is forcibly rubbed on a smooth steel surface, then a copper streak will be evident that adhesive transfer occurred. This is the origin of adhesive wear. This adhesive transfer tendency is reduced...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440009
EISBN: 978-1-62708-262-4
...-carbon steels. (a) Ferrite grains (white) and pearlite (gray streaks) in a white matrix of a hypoeutectoid steel containing 0.4% C. 1000×. (b) Microstructure (all pearlite grains) of a eutectoid steel containing 0.77% C. 2000×. (c) Microstructure of a eutectoid steel containing 0.77% C with all cementite...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130255
EISBN: 978-1-62708-284-6
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310109
EISBN: 978-1-62708-286-0
... precipitates in the molten metal. This slaggy precipitate agglomerates, causing casting problems and surface defects. This gave 409 a reputation as a grade unsuitable for applications that required good appearance because the titanium streaks were difficult to avoid and greatly highlighted by polishing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050245
EISBN: 978-1-62708-311-9
... signals Eddy current Tubing and piping Microshrinkage (magnesium castings) x-radiography Extensively used; elongated feathery streaks Liquid penetrant inspection Extensively used on finished surfaces where machining opens micropores Gas porosity (welds) x-radiography Extensively used...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780359
EISBN: 978-1-62708-281-5
... results obtained on the failed and reference parts. The results exhibit differences corresponding to a reduction in the glass transition of the failed material. Fig. 38 A view of the housing showing gray streaks characteristic of splay Fig. 41 Scanning electron images showing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220403
EISBN: 978-1-62708-259-4
...-carbon steels, may sometimes lead to dark streaks crossing each other in the etched surface, as shown in the figures (Fry’s etchant is recommended for etching in these cases). Once heterogeneous deformation is concluded, the material starts work hardening. The values of displacement and force...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490001
EISBN: 978-1-62708-340-9
... of combustion turbine components are some examples of this. Pre-existing fabrication defects may cause crack initiation and growth of cracks during service and lead to premature failures. Inclusions, segregation streaks, reheat cracking, slag inclusions in welds, lack of fusion, incomplete penetration...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300121
EISBN: 978-1-62708-323-2
...; it is adhesive interaction—it is solid state welding. Scuffing is the term often used to describe localized adhesive wear on surfaces that are otherwise in Stage II or Stage III. Most of the rubbing surface has a semblance of its original surface texture. A local streak or spot shows significant alteration...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740001
EISBN: 978-1-62708-308-9