Published since January 1, 1964

Practical Metallography

Praktische Metallographie – Preparation, Imaging and Analysis of Microstructures

ISSN: 2195-8599

Impact Factor: 0.429

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

External Links

Online Submission of Manuscripts

Volume 60 Issue 1

January 2023

Publicly Available December 18, 2022

Page range: i-iii

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Editorial

Publicly Available December 18, 2022

Editorial

Page range: 3-3

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December 18, 2022

Determination of grain size distribution of prior austenite grains through a combination of a modified contrasting method and machine learning

M. Laub, B.-I. Bachmann, E. Detemple, F. Scherff, T. Staudt, M. Müller, D. Britz, F. Mücklich, C. Motz

Page range: 4-36

Abstract

The prior austenite grain size (PAGS) represents one of the most significant microstructural parameters for steel research and process development. Since the PAGS directly correlates with recrystallisation during rolling in the manufacturing process of steel plates, it has a huge influence on its mechanical properties. Methods to determine the PAGS reliably and reproducibly are in high demand. There are several different approaches, based on different working principles, aiming to measure the PAGS. In this paper, the focus will be held on chemical etching methods because they allow, other than indirect techniques, space-resolved images as output, coupled with a fast application with good statistics and do not necessarily require a pretreatment of the specimen that can alter properties of interest. A parameter study has been conducted to identify unknown influencing variables as well as to tune well known parameters for their application to low-carbon steels. In the scope of this work, a novel and objective way of determining the PAGS is being presented. A reproducible approach has been developed that is able to automatically reconstruct the prior austenite grain boundaries (PAGB) from low-carbon steels and thereby determining the PAGS. Based on an improved etching recipe, a routine could be elaborated using modern methods of machine learning in the field of computer vision that is able to quantitatively analyze optical micrographs. Semantic segmentation is used to detect the PAGB based on correlative EBSD data and expert’s annotations; thus, reconstructing the prior morphological microstructure. Therefore, besides the determination of the average grain size, the distribution of the PAGS and their morphological parameters can be quantified.

December 18, 2022

Visualization of magnetization reversal processes by dynamic Kerr microscopy

D. Hohs, S. Klett, R. Löffler, F. Trier, D. Goll, G. Schneider

Page range: 37-52

Abstract

Dynamic Kerr microscopy enables the analysis of structural defects in magnetic materials and their impact on the demagnetization behavior. Using new visualization techniques, it is possible to image the demagnetization process in the microstructure. It has been found that residual stresses and inclusions in soft magnets, for example, will impede magnetization. In permanent magnets, abnormally large grains, for example, will demagnetize first and then cause an accelerated demagnetization of adjacent grains.

Failure Analysis

December 18, 2022

Ferrite in the HAZ of Dissimilar Temperature Probe Welds

A. Neidel, M. Giller, S. Riesenbeck

Page range: 53-61

Abstract

Protector tubes for temperature sensors were welded onto experimental gas turbine compressor blades. While the blades were made of a high alloy hard-martensitic stainless chromium steel, a high alloy metastable austenitic stainless steel was used for the tiny protector tubes. The dissimilar weld joint was applied using manual GTAW. A large amount of blocky delta ferrite formed in the HAZ immediately adjacent to the fusion line, on the side of the martensitic steel. Delta ferrite in such dissimilar welds might detrimentally affect the mechanical properties of the weld joint. It was therefore recommended not to use the affected experimental blades in test engine service. Even though no failure occurred in this case, one was prevented by declaring the subject instrumented parts unfit for test engine service.

Picture of the Month

December 18, 2022

Picture of the Month

Page range: 62-62

News

December 18, 2022

News

Page range: 63-69

Meeting Dairy

December 18, 2022

Meeting Diary

Page range: 70-71

Volume 60 (2023)

Issue 1

Volume 59 (2022)

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	0.436
Cite Score	0.7
Impact Factor	0.429
Journal Citation Indicator	0.11
SCImago Journal Rank	0.186
Source Normalized Impact per Paper	0.267

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Manuscript submission

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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

Determination of grain size distribution of prior austenite grains through a combination of a modified contrasting method and machine learning

Abstract

Visualization of magnetization reversal processes by dynamic Kerr microscopy

Abstract

Ferrite in the HAZ of Dissimilar Temperature Probe Welds

Abstract

Picture of the Month

News

Meeting Diary