Thermal stability of high-speed steels as characterized by X-ray diffraction profile analysis
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H. Leitner
Abstract
In practice the thermal stability of high-speed steels is assessed by simple hardness tests. As high-speed steels can be seen as a composite material of a particle-strengthened metallic matrix and coarse primary carbides, the measured hardness is a mixture of both microstructural constituents. Whereas the primary carbides do not change during tempering, the particle-strengthened matrix is prone to microstructural changes, thus affecting the mechanical properties. Consequently, characterization methods which are sensitive only to the matrix have to be applied. In this study single-peak profile analysis were carried out to investigate the thermal stability of high-speed steel matrices. By applying this method the lattice distortion was obtained and compared to classical hardness tests. In a first step, the applicability of this method was investigated. Afterwards, four different high-speed steels were analyzed. The investigations showed that the distortion of the lattice of the matrix depends on their microstructure and composition, which both depend on the heat treatment history. The observed differences in hardness can be correlated to differences in lattice distortion of the matrix and the present amount of primary carbides.
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© 2009, Carl Hanser Verlag, München
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Em. O. Univ.-Professor Dipl.-Ing. Dr. mont. Dr. h. c. Franz Jeglitsch zum 75. Geburtstag
- History
- Technology and mechanical properties of advanced γ-TiAl based alloys
- Basic
- Quantitative 3D characterisation of graphite morphology in cast iron – correlation between processing, microstructure and properties
- Characterization and properties of NiTi(W) and CuAlNi shape memory alloys
- On the role of eutectics during recrystallization in a single crystal nickel-base superalloy – CMSX-4
- Influence of deposition conditions on texture development and mechanical properties of TiN coatings
- Internal oxidation of metastable metallic materials
- Short-term creep behavior of a Cr Mo V hot-work tool steel
- Overview on established and novel FIB based miniaturized mechanical testing using in-situ SEM
- Applied
- Recrystallization and grain growth in the nickel-based superalloy allvac 718Plus
- Surface modifications and their effect on the nickel release rate in nickel–titanium shape memory alloys
- Thermal stability of high-speed steels as characterized by X-ray diffraction profile analysis
- Structure, stresses and stress relaxation of TiN/Cu multilayer and nanocomposite coatings
- Humidity influence on the adhesion of biomimetic fibrillar surfaces
- Design strategy for new biodegradable Mg–Y–Zn alloys for medical applications
- Influence of an apparent r-curve on strength and fracture statistics of ceramic laminates
- Avoiding grain defects in single crystal components by application of a heat conductor technique
- Notifications
- DGM News
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Em. O. Univ.-Professor Dipl.-Ing. Dr. mont. Dr. h. c. Franz Jeglitsch zum 75. Geburtstag
- History
- Technology and mechanical properties of advanced γ-TiAl based alloys
- Basic
- Quantitative 3D characterisation of graphite morphology in cast iron – correlation between processing, microstructure and properties
- Characterization and properties of NiTi(W) and CuAlNi shape memory alloys
- On the role of eutectics during recrystallization in a single crystal nickel-base superalloy – CMSX-4
- Influence of deposition conditions on texture development and mechanical properties of TiN coatings
- Internal oxidation of metastable metallic materials
- Short-term creep behavior of a Cr Mo V hot-work tool steel
- Overview on established and novel FIB based miniaturized mechanical testing using in-situ SEM
- Applied
- Recrystallization and grain growth in the nickel-based superalloy allvac 718Plus
- Surface modifications and their effect on the nickel release rate in nickel–titanium shape memory alloys
- Thermal stability of high-speed steels as characterized by X-ray diffraction profile analysis
- Structure, stresses and stress relaxation of TiN/Cu multilayer and nanocomposite coatings
- Humidity influence on the adhesion of biomimetic fibrillar surfaces
- Design strategy for new biodegradable Mg–Y–Zn alloys for medical applications
- Influence of an apparent r-curve on strength and fracture statistics of ceramic laminates
- Avoiding grain defects in single crystal components by application of a heat conductor technique
- Notifications
- DGM News
