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ORIGINAL PAPER
Laser boronizing effect on surface layer of nodular iron parts. Part 2: Transition and hardened zone structure
Journal of Research and Applications in Agricultural Engineering 2005;50(2):65-68
KEYWORDS
ABSTRACT
In this paper modified zones as a result of nodular iron laser treatment was presented. Transition and hardened zones were investigated particularly. Slight microhardness scatter in melted zone and significant in transition and hardened zones were showed. Differences in microhardness in transition and hardened zones testify to variety of phases in those zones. Mechanisms of martensite and ledeburite graphite shell in transition zone and martensite graphite shell in hardened zone formation were presented. Furthermore correlation between martensite graphite shell thickness and distance from transition zone was observed.
REFERENCES (3)
1.
Kusiński, J., Przybyłowicz, J., Kąc, S., Woladn, A.: Kształtowanie struktury i własności materiałów w wyniku laserowego przetapiania warstwy wierzchniej oraz nadtapiania powłok, Hutnik - Wiadomości Hutnicze, 1999, Nr 5, s. 276.
2.
Grum, Janez; Štrum, Roman: Microstructure analysis of nodular iron 400-12 after laser surface melt hardening, Materials Characterization 37:81-88 (1996).
3.
Grum, J.; Štrum, R.: Comparison of measured and calculated thickness of martensite and ledeburite shells around graphite nodules in the hardened layer of nodular iron after laser surface remelting, Applied Surface Science 187, 2002, s. 116.
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| eISSN: | 2719-423X |
| ISSN: | 1642-686X |
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