Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9796255 | Materials Science and Engineering: A | 2005 | 9 Pages |
Abstract
Small-angle neutron scattering (SANS) and energy-filtered transmission electron microscopy (EFTEM) were employed to characterise the precipitation behaviour in the high-speed steel HS6-5-2 during tempering. With SANS the evolution of the size distribution of precipitates during isothermal tempering at 590 °C was investigated. The SANS results are discussed assuming that three populations of precipitates can be distinguished during tempering at 590 °C. The smallest population with sizes around 1 nm is supposed to be carbon-rich clusters. Intermediate-sized particles between approximately 1 and 10 nm might be either MC and/or M2C carbides, which cannot be distinguished by SANS. In addition, the ratio A of magnetic and nuclear scattering intensity was used to gain information on the composition of the precipitates. The A-ratio is discussed assuming a substitution of iron in the precipitates by carbide forming elements with increasing tempering time. Finally, the correlation of the results obtained by SANS with those achieved by EFTEM is presented.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
H. Leitner, P. Staron, H. Clemens, S. Marsoner, P. Warbichler,