| Autor: |
Arifin, Amir, Gunawan, Saputra, Jaya Rizki |
| Předmět: |
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| Zdroj: |
Journal of Engineering Research (2307-1877); Sep2023, Vol. 11 Issue 3, p1-10, 10p |
| Abstrakt: |
INCOLOY alloy 800 is widely utilized in the outlet manifold bottom header (OMBH) inside a primary reformer at a fertilizer plant. Primary reformers in fertilizer plants usually work at high temperatures and pressures for long periods. In this work, solution annealing and normalization processes were conducted to improve the weldability of INCOLOY alloy 800 after operating for ten years. Characterizations of weldability properties were carried out through dye penetrant, X-ray fluorescence, hardness, X-ray diffraction (XRD), and metallography observations. The annealing and normalization results showed that the weldability of INCOLOY alloy 800 increased, indicating a significant reduction in cracks on the weld zone surface. Microstructure observations revealed that microcracks were not found on the weld joint surface after solution annealing. The maximum hardness value on the fusion zone was obtained at 187 VHN on normalizing, and the minimum hardness was obtained on the nontreatment sample 156.33 VHN. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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