P. R. Scheller

TU Bergakademie Freiberg

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Andreas Weiß

Catholic University of Eichstätt-Ingolstadt

Andreas Jahn

MS-Schramberg (Germany)

Stefan Wolf

Sheffield Teaching Hospitals NHS Foundation Trust

L. Krüger

TU Bergakademie Freiberg

A. G. Kovalev

Optolink (Russia)

René Hagemann

TU Bergakademie Freiberg

Olena Volkova

TU Bergakademie Freiberg

Stefan Martin

TU Bergakademie Freiberg

B. Sahebkar

TU Bergakademie Freiberg

M. Ullrich

Otto-von-Guericke University Magdeburg

Cooperative Institutions

TU Bergakademie Freiberg

Max-Planck-Institut für Nachhaltige Materialien

John Wiley & Sons (Germany)

VDEh-Betriebsforschungsinstitut

Jernkontoret (Sweden)

Institute of Metallurgy

Chinese Society for Electrical Engineering

Humboldt-Universität zu Berlin

Fédération française de cardiologie

Heidelberg University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Characterization of the TRIP/TWIP effect in austenitic stainless steels using Stress‐Temperature‐Transformation (STT) and Deformation‐Temperature‐Transformation (DTT) Diagrams

steel research international (2010)

A. G. Kovalev Andreas Jahn Andreas Weiß P. R. Scheller

Abstract Stress‐Temperature‐Transformation (STT) and Deformation‐Temperature‐Transformation (DTT) diagrams are suitable to characterize the TRIP (transformation‐induced plasticity) and TWIP (twinning‐induced plasticity) effect in steels. The triggering stresses for the deformation‐induced microstructure transformation processes, the characteristic temperatures, the yield stress and the strength of the steel are plotted in the STT diagram as functions of temperature. The elongation values of the austenite, the strain‐induced twins and martensite formations are shown on the DTT diagram. The systematics of STT and DTT diagrams and the method for their development are described. Especially, the correlations between the STT and DTT diagrams and the thermodynamics are explained in the present paper. The developed STT and DTT diagrams for a novel austenitic Cr‐Mn‐Ni (16%Cr, 6% Mn, 6% Ni) as‐cast steel and austenitic steel AISI 304 are presented. The Cr‐Mn‐Ni steel shows a deformation‐induced α′‐martensite and twin formation. In contrast, the AISI 304 shows a deformation‐induced ε‐ and α′‐martensite formation. The differences between both steel grades are based on thermodynamic pre‐conditions. Therefore the thermodynamic stability conditions of the phases and the kinetics of stress and deformation‐induced martensite and the twins formation are reflected in the developed STT and DTT diagrams.

Twip

Diffusionless transformation

10.1002/srin.201000245

Cite

Citations (39)

DZHW Panel Study of School Leavers 2015 - Educational paths of school leavers with a higher education entrance qualification

Heidrun Schneider Barbara Franke Anna Meine P. R. Scheller Andreas Woisch

The DZHW Panel Study of School Leavers 2015 is part of the School Leavers panel series of the DZHW, which records information on post-school educational and career paths of school leavers with a higher education entrance qualification. For every graduate year (cohort) a series of survey waves are carried out with each wave occurring at a different time before and after graduation, implemented as a combined cohort-panel-design. The Panel Study of School Leavers 2015 comprises the 20th cohort of the survey series with two survey waves.

Graduation (instrument)

Panel survey

School education

10.21249/dzhw:gsl2015:1.0.1

Cite

Citations (0)

Stress‐Temperature‐Transformation and Deformation‐Temperature‐Transformation Diagrams for an Austenitic CrMnNi as‐cast Steel

steel research international (2011)

A. G. Kovalev Andreas Jahn Andreas Weiß Steffen Wolf P. R. Scheller

Abstract Stress‐Temperature‐Transformation (STT) and Deformation‐Temperature‐Transformation (DTT) diagrams are well‐suited to characterize the TRIP (transformation‐induced plasticity) and TWIP (twinning‐induced plasticity) effect in steels. The triggering stresses for the deformation‐induced microstructure transformation processes, the characteristic temperatures, the yield stress and the strength of the steel are plotted in the STT diagram as functions of temperature. The elongation values of the austenite, the strain‐induced twins and martensite formations are shown in the DTT diagram. The microstructure evolution of a novel austenitic Cr‐Mn‐Ni (16%Cr, 6% Mn, 6% Ni) as‐cast steel during deformation was investigated at various temperatures using static tensile tests, optical microscopy and the magnetic scale for the detection of ferromagnetic phase fraction. At the temperatures above 250 °C the steel only deforms by glide deformation of the austenite. Strain‐induced twinning replaces the glide deformation at temperatures below 250 °C with increasing strain. Below 100 °C, the strain‐induced martensite formation becomes more pronounced. The kinetics of the α'‐martensite formation is described according to stress and deformation temperatures. The STT and DTT diagrams, enhanced with the kinetics of the martensite formation, are presented in this paper.

Twip

Diffusionless transformation

10.1002/srin.201100065

Cite

Citations (26)

γ↔∊ Transformation Behavior of Austenitic-Martensitic FeMn(Cr) Steels

Practical Metallography (2012)

Andreas Weiß Ferenc Tranta P. R. Scheller A. G. Kovalev

Abstract Three differently alloyed austenitic FeMn(Cr) steels have been examined with a focus on the occurrence of ∊ martensite. Studies primarily focus on the detection of ∊ martensite by means of metallographic and X-ray methods as well as by means of dilatometric and DSC measurements. Dilatometric and DSC measurements have also been carried out to determine ∊ martensite formation and dissolution temperatures. Examination results including thermodynamic calculations serve to characterize the formation and dissolution of ∊ martensite in FeMn(Cr) steels.

Diffusionless transformation

10.3139/147.110133

Cite

Citations (0)

INTERACTION BETWEEN THE FLOW CONDITIONS AND TEMPERATURE DISTRIBUTION IN THE CONTINUOUS SLAB CASTER MOLD

Manufacturing (2006)

P. R. Scheller B. Sahebkar Olena Volkova

Slab

Caster

10.1615/ihtc13.p13.10

Cite

Citations (1)

Slag entrainment in continuous casting and effect of interfacial tension

Ironmaking & Steelmaking Processes Products and Applications (2012)

René Hagemann H-P Heller Stefan Lachmann S. Seetharaman P. R. Scheller

In the first part of the present study, the relation between the dimension free critical capillary number Ca* and the material number Λ are introduced as a stability criteria for slag entrainment at the steel/slag interface. With the knowledge of thermophysical properties of the immiscible liquids in contact, critical values of Ca* for slag entrainment as a function of Λ could be estimated. The interfacial tension was investigated at 1823 K for carbon and Cr–Ni steels in contact with ternary slags containing CaO, SiO2, Al2O3, MgO and TiO2 using the drop weight method. The apparent interfacial tension of CaO–SiO2–TiO2 slag systems in contact with Cr–Ni steel decreases with increasing TiO2 content and was found to be influenced by interfacial area change during droplet formation at the capillary exit, slag composition and reactions at the steel/slag interface. Minimum values of interfacial tension, observed during measurements, increase the possibility for slag entrainment in the continuous casting mould.

Slag (welding)

Entrainment (biomusicology)

10.1179/1743281212y.0000000018

Cite

Citations (19)

Properties of high alloyed CrMnNi steels with strain induced a' martensite formation

Inżynieria Materiałowa (2010)

Andreas Jahn A. G. Kovalev Stefan Wolf Andreas Weiß L. Krüger

Strain (injury)

Source

Cite

Citations (0)

Gerechtigkeit zwischen den Generationen

Berliner Journal für Soziologie (2007)

Stefan Liebig P. R. Scheller

10.1007/s11609-007-0027-7

Cite

Citations (37)

DZHW Panel Study of School Leavers 2008 - Educational paths of school leavers with a higher education entrance qualification

Christoph Heine Heiko Quast Heike Spangenberg Markus Lörz P. R. Scheller

The DZHW Panel Study of School Leavers 2008 is part of the School Leavers panel series of the DZHW, which records information on post-school educational and career paths of school leavers with a higher education entrance qualification. For every graduate year (cohort) a series of survey waves are carried out with each wave occurring at a different time before and after graduation, implemented as a combined cohort-panel-design. The Panel Study of School Leavers 2008 comprises the 17th cohort of the survey series with three survey waves. In contrast to preceding cohorts, the study phase of the 2008 cohort is defined by the implementation of the two-cycle degree programme (bachelor’s and master’s degree). This change has been taken into account through a detailed recording of educational choices relevant for the course of study. The time shift in the survey implementation compared to previous cohorts made it possible to interview a higher proportion of students pursuing a master’s degree. The consequences of the decision of the Federal Supreme Court in 2005, which facilitated charging general tuition fees from the beginning of the first degree in seven federal states, could also be registered during the first survey wave of the 2008 cohort.

Graduation (instrument)

Bachelor

10.21249/dzhw:gsl2008:1.0.0

Cite

Citations (1)

Institute of Iron and Steel Technology at the TU Bergakademie Freiberg

BHM Berg- und Hüttenmännische Monatshefte (2005)

P. R. Scheller Peter Heller Andreas Weiß Thilo Kreschel Olena Volkova

Metallography

Slag (welding)

10.1007/bf03169083

Cite

Citations (0)