Surface modifications of upgraded high-speed tool steel |
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| Authors: | P Fornal J Stanek J Gawlik E Wantuch H Binczycka |
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| Institution: | (1) Institute of Physics, Cracow University of Technology, Cracow, Poland;(2) Institute of Physics, Jagiellonian University, Cracow, Poland;(3) Production Engineering Institute, Cracow University of Technology, Cracow, Poland |
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| Abstract: | The SW7M high-speed tool steel of composition Fe (80%), Mo (5%), Cr (4%), V (2%) and C (1%) was studied by conversion electron Mössbauer spectroscopy at 293 K. The specimen consists mainly of  -Fe, martensite and austenite grains. The unwanted fraction of austenite was reduced by polishing the sample in an external magnetic field. At elevated temperatures, the SW7M steel exhibits a selective oxidation of its fraction. The corrosion rate is sigificantly reduced by N and Ti low-energy ion bombardment. |
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