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metallographic examination

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130043
EISBN: 978-1-62708-284-6
... and preservation of specimens, mechanical testing, macroexamination, microexamination, metallographic examination, determination of the fracture mechanism, chemical analysis, exemplar testing, and analysis and writing the report. The chapter ends with a discussion on various processes involved in the determination...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270130
EISBN: 978-1-62708-301-0
... aircraft. The bolts were removed and analyzed to determine the mode and cause of failure. Based on the results of macroscopy, scanning electron fractography, metallographic examination, and chemical analysis, the failures were caused by stress corrosion cracking, and in one case, overtightening...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850541
EISBN: 978-1-62708-260-0
...Abstract Abstract This appendix contains recipes of the electrolytic solutions in which various metals are polished in preparation for metallographic examination. electrolyte electromechanical polishing ...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610549
EISBN: 978-1-62708-303-4
... of Fracture Surfaces Microscopic Examination of Fracture Surfaces Stress Analysis Fracture Modes Fracture Mechanics Applied to Failure Analysis Metallographic Examination Mechanical Testing Chemical Analysis Simulated Service Testing A Final Word On-Site Investigation Service...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910475
EISBN: 978-1-62708-250-1
... discussed in the chapter are: collection of background information and sampling; preliminary laboratory examination; detailed metallographic and fractographic examinations; chemical analysis of corrosion products and bulk materials; corrosion testing for quality control; mechanical testing for quality...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270133
EISBN: 978-1-62708-301-0
..., the blade failed due to stress-corrosion cracking combined with the effects of inadequate tempering. compressor blades fractography metallographic examination stress corrosion cracking visual examination Summary Background Visual Examination of General Physical Features Testing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270084
EISBN: 978-1-62708-301-0
... To check the quality of the hub material, metallographic examination was carried out on a small portion cut from near the fracture surface. The microstructure is shown in Fig. CH10.4 . The material is homogeneous and free from porosity and voids. Fig. CH10.4 Microstructure of the hub material...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090419
EISBN: 978-1-62708-266-2
... to characterize cracking and fracture damage, and explains what to look for during macroscopic and microscopic examinations as well as chemical and metallographic analyses. It also includes nearly a dozen case studies investigating SCC failures in various materials. failure analysis macroscopic examination...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220667
EISBN: 978-1-62708-259-4
... be clearly supported by results included in the report. Steels and cast irons present heterogeneities originating from various sources, as discussed at length in the previous chapters in this book. Metallographic examination must thus carefully consider the position and orientation of the portion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480141
EISBN: 978-1-62708-318-8
... percentage (at.%) rather than the convention for normal terminal alloys, where the amount of each element is given in weight percentage (wt%). Metallographic examination of the α 2 alloy system indicates that microstructures obtained after heat treating can be predicted based on a knowledge of the more...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720161
EISBN: 978-1-62708-305-8
...Abstract Abstract This chapter describes the methods and equipment applicable to metallographic studies and discusses the preparation of specimens for examination by light optical microscopy. Five major operations for preparation of metallographic specimens are discussed: sectioning, mounting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410197
EISBN: 978-1-62708-265-5
... experimental uncertainty in the exact positions of the beginning of transformation curves. The IT diagrams have been produced by metallographic examination of series of specimens held for various times at various temperatures between Ae 3 or A cm and M s . More than a hundred specimens are often required...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270087
EISBN: 978-1-62708-301-0
...-fracture region Metallographically prepared specimens taken from the root region and from the center section of the failed blade were examined in optical and scanning electron microscopes. The microstructure was found to be satisfactory without any abnormalities ( Fig. CH11.5 ). Qualitative...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270150
EISBN: 978-1-62708-301-0
.... Similar inclusions were seen on the fracture surface away from the origin also. Fig. CH36.5 SEM fractograph of region close to the origin showing inclusions that were analyzed to be rich in silicon A section from the root was cut and prepared for metallographic examination. It was found...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270095
EISBN: 978-1-62708-301-0
... side indicating a directional thrust. In addition to their examination, investigators also conducted metallographic studies and hardness tests, which indicated that the balls and inner rings reached temperatures above 825 °C (1520 °F). Based on their findings, investigators concluded that the bearings...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130351
EISBN: 978-1-62708-284-6
... Metallographic examination of cracks evident in the flange of the main landing gear lever attach pin, showing loss of chromium at cracks (20 μm) Fig. 15 Micrographs showing the morphology of the cracks. (a) Overall view (50 μm). (b) Closeup of crack (20 μm) Based on the results...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230199
EISBN: 978-1-62708-298-3
.... , 1932 . Researches on Beryllium , J. Inst. Met. , Vol 49 , p 365 – 388 Udy M.C. , Manning G.K. , and Eastwood L.W. , 1949 . Metallographic Examination of Beryllium Alloys , Trans. AIME , Vol 18 , p 799 – 784 10.1007/BF03398936 White D.W. Jr. , and Burke J.E...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270115
EISBN: 978-1-62708-301-0
.... Metallographic examination was carried out on samples taken from a blade and a dovetail region, after etching with a solution containing 2.5 g ferric chloride, 5 g picric acid, 2 ml hydrochloric acid, and 90 ml ethyl alcohol. Both the blade and the dovetail portion showed tempered martensitic structure...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270102
EISBN: 978-1-62708-301-0
... intercrystalline and transcrystalline fracture ahead of the beach marks in a bolt Metallographic examination was carried out on the barrel surface of a few failed bolts. A number of cracks were observed close to the fracture surface, propagating in inter and transgranular mode ( Fig. CH17.14 ). The bolt...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180151
EISBN: 978-1-62708-256-3
... Fig. 21 Arrangement of major components of portable metallographic laboratory for grinding and polishing. Equipment for examination and photography are also available. Image courtesy of Buehler Ltd. Fig. 3 Origin (at arrow) of a single-load brittle fracture that initiated at a small...