[Kovove materialy - Metallic materials]
    Fri - July 20, 2018 - 02:54 No. of hits : 945021 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 56 (2018), Issue 3

Effects of cryogenic treatment on residual stresses of AISI D2 tool steel
vol. 56 (2018), no. 3, pp. 153 - 161

Positive effects of cryogenic treatment on residual stresses of AISI D2 cold work tool steel were studied in this article. Samples were exposed to the cryogenic treatment at –145 °C for short and long holding durations (4 and 24 h, respectively). Alteration in residual stress distribution was correlated with the microstructure, hardness and surface roughness examinations of the samples. Results showed that cryogenic treatment reduced the residual surface stresses in comparison to the conventional heat treatment. There was no significant difference in hardness values and retained austenite contents. However, more dense and homogeneous carbide precipitation was observed mainly for the cryo-treated sample for 24 h. Surface roughness was found better for cryo-treated samples. In general, holding duration of 24 h represented preferable conditions, and this case was achieved by using the improved microstructure.

Key words
AISI D2 steel, cryogenic treatment, residual stress, carbide precipitation, surface roughness

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.

Article abstracts updated: 2018-06-27 07:09      
Articles in press revised: 2017-11-14 12:19     
Full text pdf uploaded: 2018-06-27 07:00    
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