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macrostructural evaluation

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220039
EISBN: 978-1-62708-259-4
... are preferred when observing macrostructural features such as: Evaluation of material homogeneity along the cross section Characterization of segregation mode and intensity Evaluation of position, shape, and dimensions of cracks and pores Evaluation of the presence of pipe, residual pipe...
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
..., and failure mechanisms. fracture analysis macroetching macrostructural evaluation quality control 1-1 Introduction Macroscopic examination techniques are frequently employed in routine quality control, in failure analysis, and in research studies. These techniques are generally a prelude...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270168
EISBN: 978-1-62708-301-0
... to the shearing of the screws that hold it in place. They also provided recommendations to remediate the problem. locking screws low pressure turbine discs macrostructural evaluation SEM fractography visual examination Summary During cyclic spin tests on an LP turbine disc of an aircraft engine...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220667
EISBN: 978-1-62708-259-4
... and then decide on the acceptance or rejection of the hypothesis In the first stage, care should be taken in the design of the experiments to guarantee that the effect of the variable one wants to study will indeed be evaluated. The number of variables interfering on micro- and macrostructure of steels...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930039
EISBN: 978-1-62708-359-1
.... Fig. 7 Radiograph showing positive image of macroscopically visible defects in the X-65 pipe steel of Fig. 6 . See Fig. 6 for designation of specific defects. Weld Macrostructure Destructive evaluation begins by removing a transverse section from the weld and preparing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720001
EISBN: 978-1-62708-305-8
... quality in type 304 stainless steel plate. Source: Ref 5 , 6 , and 7 . Macroscopic examination of a component surface is also essential in evaluating the condition of a material or the cause of failure. This may include: Characterization of the macrostructural features of fracture surfaces...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720021
EISBN: 978-1-62708-305-8
... the condition is removed. Continuously Cast Steel Macrostructures Continuous casting has become an important process for producing metals. Macroetching has been widely employed in the development of macroetching to evaluate the influence of casting parameters on billet and slab quality and on the quality...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400297
EISBN: 978-1-62708-258-7
... address: ASTM (American Society of Testing Materials), 100 Barr Harbor Drive, West Conshohocken, PA, 19428-2959; Tel: 610/832-9555; E-mail: service@astm.org; Website: www.astm.org General E 7 Terminology Relating to Metallography E 807 Standard Practice for Metallographic Laboratory Evaluation E 44 Heat...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220025
EISBN: 978-1-62708-259-4
..., and other such metrics. metallography One of the most interesting problems in evaluating micro- and macrostructures of metals is the fact that most available analytical techniques make it possible to observe two-dimensional sections of three-dimensional structures. This transformation, which...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220353
EISBN: 978-1-62708-259-4
... working on the macrostructure of a steel. (a) Dendritic structure in the original ingot. (b) Cross section after a reduction by hot working to 1/5 of the cross-sectional area. (c) Cross section after a reduction by hot working to 1/30 of the cross-sectional area. (d) Cross section after a reduction by hot...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260119
EISBN: 978-1-62708-336-2
... through a transfer and distribution system. Refractory liners, belonging to different components of that system, must satisfy diverse criteria such as reactivity, maintainability, and disposability. New materials (high-temperature fused silica and low-density fused silica) are being evaluated as long-term...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220475
EISBN: 978-1-62708-259-4
... and contrasts steels used for concrete reinforcement and in various types of pressure vessels, and presents a metallographic study of the effects of welding on the micro and macrostructure of steel. pressure vessels structural steel welding rebar The classification “structural steels” basically...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.9781627082600
EISBN: 978-1-62708-260-0
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140001
EISBN: 978-1-62708-335-5
... microstructural and macrostructural tendencies. Solidification: Engineered castings are susceptible to internal and superficial defects. The complex geometries of shaped castings, fluid dynamics, and solidification mechanics combine to present unique and difficult challenges to the objective of dense...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120025
EISBN: 978-1-62708-269-3
... macrostructures and microstructures in very large sections, such as billets with diameters of 400 mm (16 in.) or greater. Ingots up to 1000 mm (40 in.) in diameter and weighing more than 9000 kg (20,000 lb) have been melted successfully, but due to increasing tendency for segregation with increasing ingot size...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720365
EISBN: 978-1-62708-305-8
... ductility occurring near 370 °C (700 °F) of air melted alloys. No NDI method can reliably evaluate the presence or absence of possible tramp element contamination, and composition checks or hot tensile checks are too random for complete assurance of the presence or absence of contamination. The positive...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 1998
DOI: 10.31399/asm.tb.ts5.t65900029
EISBN: 978-1-62708-358-4
... solidification leads to an improvement in the uniformity of macrostructure and a reduction in the tendency for center segregation ( Fig. 3-4 ). Microstructural features such as the eutectic cell size ( Fig. 3-5 ) and the eutectic carbide particle size ( Fig. 3-6 ) are also reduced. These results have been...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230401
EISBN: 978-1-62708-298-3
... Crack tendency of beryllium relative to its impurity content. Source: Vaccarri 1991 As seen in Fig. 23.1 , the grain macrostructure is influenced by the travel speed. Although increasing the speed decreases the heat input, the resulting elongated weld pool caused the solidification and growth...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290001
EISBN: 978-1-62708-306-5
...; eliminate channels if possible. Provide flats for uniform fastening and fastening ease. Ensure sufficient space between fasteners and other features for a fastening tool Prefer easily handled parts. Generally, a concept design is developed and then evaluated against each of these guidelines...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180151
EISBN: 978-1-62708-256-3
... and emphasize fracture characteristics. This should also assist in determining which areas of the fracture are of prime interest and which magnifications will be possible (for a given picture size) to bring out fine details. When this evaluation has been completed, it is appropriate to proceed with photography...