Published since January 1, 1964

Practical Metallography

Praktische Metallographie – Preparation, Imaging and Analysis of Microstructures

ISSN: 2195-8599

Impact Factor: 0.266

About this journal

Practical Metallography is a bilingual (German-English) journal that informs you thoroughly on materialographic preparation, imaging and analysis of microstructures. The journal covers the development and improvement of metallographic methods and equipment, possibilities of optical and electron microscopy, spectroscopy, diffraction techniques, non-destructive testing, metallographic investigations of materials, problems of specimens preparation and evaluation including useful laboratory advice and recipes, failure analysis including damage detection and elimination.
All articles are subject to thorough, independent peer review.
Practical Metallography works closely with Deutsche Gesellschaft für Materialkunde e.V. (DGM)

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Supplementary Materials

Topics

Volume 58 Issue 10

October 2021

Accessible October 12, 2021

Page range: 617-618

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Editorial

Accessible October 12, 2021

Editorial

Page range: 619-619

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October 12, 2021

Microstructural Examinations of Copper Antimony Alloys

R. Haubner, S. Strobl

Page range: 620-629

Abstract

Among other materials, fahlores were used in the Bronze Age copper ore smelting process. These contain, apart from sulfur, arsenic and antimony. Therefore, these elements can be found in Bronze Age copper casting ingots or artifacts. In order to study the behavior of Sb more closely, two copper alloys containing 10 and 30 wt. % Sb were melted and subjected to a metallographic examination. On the one hand, microstructures with copper dendrites and homogeneous interdendritic areas primarily composed of intermetallic phase could be found. On the other hand, at higher Sb concentrations, first Cu 3 Sb precipitated which, in turn, transformed to Cu 10 Sb 3 upon cooling. The crystals in these microstructures were characterized by numerous parallel cracks. No further phases were observed by XRD.

October 12, 2021

Bulk Nanocrystalline Permanent Magnets by Selective Laser Melting

F. Trauter, J. Schanz, H. Riegel, T. Bernthaler, D. Goll, G. Schneider

Page range: 630-643

Abstract

Fe-Nd-B powders were processed by additive manufacturing using laboratory scale selective laser melting to produce bulk nanocrystalline permanent magnets. The manufacturing process was carried out in a specially developed process chamber under Ar atmosphere. This resulted in novel types of microstructures with micrometer scale clusters of nanocrystalline hard magnetic grains. Owing to this microstructure, a maximum coercive field strength (coercivity) μ 0 H c of 1.16 T, a remanence J r of 0.58 T, and a maximum energy product (BH) max of 62.3 kJ/mm 3 could, for example, be obtained for the composition Nd16.5-Pr1.5-Zr2.6-Ti2.5-Co2.2-Fe65.9-B8.8.

October 12, 2021

A Metallographic Preparation Method for Three-Dimensional Microstructural Characterization of Machining Chips

S. Fang, A. Frank

Page range: 644-661

Abstract

Chip formation is an important indicator of machining processes. Statistical characterization of machining chips’ geometric features can offer crucial information for evaluating the stability and productivity of the machining processes. In abrasive machining processes, an abundance of small chips are produced by the vast number of abrasives exposed to the cutting surfaces. Geometric features of abrasives, such as shape, dimension, and distribution, may be hierarchically passed on to the chips. Similar to those of the abrasives, geometric features of the chips may also vary to a certain extent and conform to some statistical distribution. To verify these characteristics, a metallographic preparation method in connection with chips formed in abrasive machining processes is proposed in this study. Challenges in collecting and segmenting chips have been successfully overcome through several steps using ultrasonic bath cleaning and powder cold embedding methods. Finally, a considerable amount of chips was formed and uniformly embedded in a resin mold, ready for microscopic characterization.

Failure Analysis

October 12, 2021

Metallurgical Failure Analysis of Cracking in Exhaust Stack Liner Fastening Bolts

A. Neidel, M. Giller, S. Riesenbeck

Page range: 662-671

Abstract

Exhaust stack liners of a test rig for gas turbine burners failed locally by ruptured fasteners and fallen-off liner plates. Misalignment of the plating relative to each other and relative to their fasteners caused restraint of the expanding and shrinking liner plates upon start-up and shutdown of the burner rig. The fastening holes of the failed liner plates were not concentric, but misaligned relative to each other and relative to their fastener bolts. This exerted a shear loading on the threads of the fastening bolts, which in turn caused a mean stress shift and damaged the threads of the fasteners by nicking. So pre-loaded, the fastening bolts were not able to withstand the vibratory loads from the flowing exhaust gases and failed due to fatigue.

Picture of the Month

October 12, 2021

Picture of the Month

Page range: 672-672

People

Accessible October 12, 2021

George Vander Voort selected as Top Consultant of the Decade by IAOTP

Page range: 673-677

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Meeting Diary

October 12, 2021

Meeting Diary

Page range: 678-679

Volume 58 (2021)

Volume 57 (2020)

Volume 56 (2019)

Volume 55 (2018)

Volume 54 (2017)

Volume 53 (2016)

Volume 52 (2015)

Volume 51 (2014)

Volume 50 (2013)

Volume 49 (2012)

Volume 48 (2011)

Volume 47 (2010)

Volume 46 (2009)

Volume 45 (2008)

Volume 44 (2007)

Volume 43 (2006)

Volume 42 (2005)

Volume 41 (2004)

Volume 40 (2003)

Volume 39 (2002)

Volume 38 (2001)

Volume 37 (2000)

Volume 36 (1998)

Volume 34 (1997)

Volume 33 (1996)

Volume 32 (1995)

Volume 31 (1994)

Volume 30 (1993)

Volume 29 (1992)

Volume 28 (1991)

Volume 27 (1990)

Volume 26 (1989)

Volume 25 (1988)

Volume 24 (1987)

Volume 23 (1986)

Volume 22 (1985)

Volume 21 (1984)

Volume 20 (1983)

Volume 18 (1981)

Volume 17 (1980)

Volume 16 (1979)

Volume 15 (1978)

Volume 14 (1977)

Volume 13 (1976)

Volume 12 (1975)

Volume 11 (1974)

Volume 10 (1973)

Volume 9 (1972)

Volume 8 (1971)

Volume 7 (1970)

Volume 6 (1969)

Volume 5 (1968)

Volume 4 (1967)

Volume 2 (1965)

Volume 1 (1964)

5-year Impact Factor	0.260
Cite Score	0.5
Impact Factor	0.266
Journal Citation Indicator	0.08
SCImago Journal Rank	0.156
Source Normalized Impact per Paper	0.215

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Manuscript submission

You can easily submit your manuscript online. Simply go to https://mc.manuscriptcentral.com/practmet and you will be guided through the whole submission and publishing process.

Editorial

Editor
Prof. Dr.-Ing. Frank Mücklich (muecke@matsci.uni-sb.de)
Saarland University
Deutsche Gesellschaft für Materialkunde e.V. (DGM)

Editorial Office
Michael Engstler (pmeditor@materialography.net)
Saarland University
Campus D3 3
66123 Saarbrücken

Dr.-Ing. Agustina Guitar
Laura Ulrich
Niklas Müller

Society contact
Honorary Chairman, DGM
Prof. Dr. Dr. Günter Petzow
Deutsche Gesellschaft für Materialkunde e.V. (DGM)

(Deutsch)

Online ISSN: 2195-8599
Print ISSN: 0032-678X
Type: Journal
Language: Multiple languages
Publisher: De Gruyter
First published: January 1, 1964
Publication Frequency: 12 Issues per Year

Practical Metallography

Praktische Metallographie – Preparation, Imaging and Analysis of Microstructures

Contents

Editorial

Microstructural Examinations of Copper Antimony Alloys

Abstract

Bulk Nanocrystalline Permanent Magnets by Selective Laser Melting

Abstract

A Metallographic Preparation Method for Three-Dimensional Microstructural Characterization of Machining Chips

Abstract

Metallurgical Failure Analysis of Cracking in Exhaust Stack Liner Fastening Bolts

Abstract

Picture of the Month

George Vander Voort selected as Top Consultant of the Decade by IAOTP

Meeting Diary