Abstract
A 1.5%Cr, 1%C bearing steel was sub-zero Celsius treated after quenching.Transmission and reflection (synchrotron) X-Ray Diffraction were applied ex-situ at the HZBBESSY II synchrotron facility to quantify the phase fractions of martensite and austenite and determine the stress state in austenite.
The tempering response of the sub-zero treated material was studied with high resolution dilatometry and compared with the behavior of a reference as-quenched sample.X-Ray Diffraction indicates that sub-zero Celsius treating reduces the content of retained austenite in the material and introduces a state of compression in austenite. Dilatometry indicates that a long isothermal holding at cryogenic temperatures enhanced the precipitation of transition carbides during tempering.
The tempering response of the sub-zero treated material was studied with high resolution dilatometry and compared with the behavior of a reference as-quenched sample.X-Ray Diffraction indicates that sub-zero Celsius treating reduces the content of retained austenite in the material and introduces a state of compression in austenite. Dilatometry indicates that a long isothermal holding at cryogenic temperatures enhanced the precipitation of transition carbides during tempering.
Original language | English |
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Publication date | 2013 |
Number of pages | 7 |
Publication status | Published - 2013 |
Event | Heat Treat & Surface Engineering Conference & Expo 2013 - Chennai Trade Center, Chennai, India Duration: 16 May 2013 → 18 May 2013 Conference number: 27 |
Conference
Conference | Heat Treat & Surface Engineering Conference & Expo 2013 |
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Number | 27 |
Location | Chennai Trade Center |
Country/Territory | India |
City | Chennai |
Period | 16/05/2013 → 18/05/2013 |
Keywords
- martensite
- tempering
- sub-zero Celsius treatment
- synchrotron) XRD
- dilatometry