In-situ high temperature microstructural analysis during tempering of 42CrMo4 using transmission electron microscopy
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Christian Krause
Abstract
In the present work, investigations of the microstructural changes were carried out during hardening and tempering of 42CrMo4 (1.7225) steel. Using transmission electron microscopy, the hardened state was examined initially. Following this, the material was incrementally heated in a heated specimen holder to 580 °C. Diffraction patterns were recorded at regular intervals in order to analyse and document the changes from a martensitic structure to a ferritic structure. The characteristic tempering stages were identified for the material and assigned to a temperature range. Moreover, thermal activated diffusion processes were detected above 500 °C.
References
[1] U.Ahrens, G.Besserdich, H.-J.Maier: Härterei Technische Mitteilungen HTM55 (2000) 6, Carl Hanser Verlag München, 329–338.Search in Google Scholar
[2] W.Crafts; J.L.Lamont: Härtbarkeit und Auswahl von Stählen, Springer Verlag, Berlin (1954).10.1007/978-3-642-92619-8Search in Google Scholar
[3] W.Bleck (Ed.): Werkstoffkunde Stahl für Studium und Praxis, Wissenschaftsverlag, Aachen (2004).Search in Google Scholar
[4] W.Dahl (Ed.): Eigenschaften und Anwendung der Stähle, Verlag der Augustinus Buchhandlung, Aachen (1998).Search in Google Scholar
[5] H.-J.Eckstein: Wärmebehandlung von Stahl, VEB Deutscher Verlag für Grundstoffindustrie, Leipzig (1969).Search in Google Scholar
[6] E.P.Butler: Rep. Prog. Phys.42 (1979) 833–889.10.1088/0034-4885/42/5/002Search in Google Scholar
[7] T.Kamino, K.Sasaki, H.Saka: Microsc. Microanal.3 (1997) 393–408.10.1017/S143192769797029XSearch in Google Scholar
[8] R.Sinclair, T.Itoh, R.Chin: Microsc. Microanal.8 (2002) 288–304.10.1017/S1431927602020226Search in Google Scholar
[9] M.Gojic, L.Kosec, P.Matkovic: J. Mater. Sci.33 (1998) 395–403.10.1023/A:1004375914591Search in Google Scholar
[10] K.Sawada, M.Taneike, K.Kimura, F.Abe: Mater. Sci. Technol.19 (2003) 739–742.10.1179/026708303225010696Search in Google Scholar
[11] Y.Iguchi, T.Kouda, T.Shibata: ISIJ International44 (2004) 243–249.10.2355/isijinternational.44.243Search in Google Scholar
[12] J.Liu, C.P.Luo: Mater. Sci. Eng. A438 (2006) 153–157.10.1016/j.msea.2005.12.047Search in Google Scholar
[13] D.B.Williams, C.B.Carter: Transmission Electron Microscopy II Diffraction, Springer Science + Buiseness Media, Inc. (2006).Search in Google Scholar
[14] H.Schuhmann, H.Oettel (Eds.): Metallografie, Wiley-VCH Verlag, Weinheim (2005).Search in Google Scholar
[15] J.M.Beswick: Metall. Trans. A18 (1987) 1897–1906.10.1007/BF02647019Search in Google Scholar
© 2009, Carl Hanser Verlag, München
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Articles in the same Issue
- Contents
- Contents
- Feature
- Intermolecular slip mechanism in tropocollagen nanofibrils
- Basic
- Identification of model parameters from elastic/elasto-plastic spherical indentation
- Penetration of a pyramid indenter into a multilayer coating
- Nanoindentation of pseudoelastic NiTi shape memory alloys: Thermomechanical and microstructural aspects
- Analysis of nanoindentation curves in the case of bulk amorphous polymers
- Effect of indenter shapes on inverse materials characterization based on the dual indenters method
- Applied
- Creep properties from indentation tests by analytical and numerical techniques
- Analysis of nanoindentation and nanoscratch experiments of thin amorphous carbon coatings and multilayers: friction, wear and elastic – plastic deformation
- Mutual consistency of hardness testing at micro- and nanometer scales
- Friction and adhesion of carbon nanotube brushes
- Mechanical testing of single yeast cells in liquid environment: Effect of the extracellular osmotic conditions on the failure behavior
- UFG and nanocrystalline microstructures produced by hydrostatic extrusion of multifilament wires
- In-situ high temperature microstructural analysis during tempering of 42CrMo4 using transmission electron microscopy
- Mixing enthalpies in Ag–Ca, Ag–Eu and Ag–Yb liquid alloys
- Dilatometry revealing Si precipitation in Al–Si-alloys
- Notifications
- DGM News
