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Microstructural alteration and oxidation behavior of boronized stainless steel AISI 440C after heat treatments |
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| รหัสดีโอไอ | |
| Creator | 1. Patcharin Naemchanthara 2. Patiphan Juijerm |
| Title | Microstructural alteration and oxidation behavior of boronized stainless steel AISI 440C after heat treatments |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2562 |
| Journal Title | Songklanakarin Journal of Science and Technology |
| Journal Vol. | 41 |
| Journal No. | 3 |
| Page no. | 539-544 |
| Keyword | oxidation resistance, thermochemical surface treatment, heat treatment, martensitic stainless steel, boronizing |
| URL Website | http://rdo.psu.ac.th/sjstweb/index.php |
| ISSN | 0125-3395 |
| Abstract | The martensitic stainless steel AISI 440C was boronized at a temperature of 950 ?C for about 4 hr. Heat treatments at a temperature of 850 ?C for about 2-8 hr were performed to eliminate the FeB phase of the boride layer. The oxidation investigations were carried out at a given temperature of 900 ?C on different surface conditions. It was found that the FeB phase was completely dissolved and transformed to the Fe2B phase after a heat treatment at a temperature of 850 ?C for about 8 hr. The oxidation behavior of the non-boronized, boronized and boronized with heat treatment of 8 hr conditions exhibit a parabolic manner, while the specimens boronized with heat treatments of 2 6 hr show a linear manner. The single-phase (Fe2B) boride layer on the martensitic stainless steel AISI 440C possesses a lowest oxidation rate as compared to other investigated surface conditions. |
