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Effect of vanadium and niobium alloying elements on the microstructure andmechanical properties of a drop forging microalloyed HSLA steel |
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| รหัสดีโอไอ | |
| Creator | Ganwarich Pluphrach |
| Title | Effect of vanadium and niobium alloying elements on the microstructure andmechanical properties of a drop forging microalloyed HSLA steel |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2559 |
| Journal Title | Songklanakarin Journal of Science and Technology (SJST) |
| Journal Vol. | 38 |
| Journal No. | 4 |
| Page no. | 357-363 |
| Keyword | vanadium and niobium alloying elements,microstructures,mechanical properties,drop forgingmicroalloyed HSLA steel |
| ISSN | 0125-3395 |
| Abstract | This research explains the results of microstructure and mechanical property investigations of four drop forgingmicroalloyed HSLA steels, ME Wrench 1, ME Wrench 2, ME Wrench 3, and ME Wrench 4. The purpose was to find theinfluence of vanadium (0.121, 0.119, 0.120, and 0.210%) and niobium (0.00045, 0.00055, 0.00052, and 0.00057%) content on themicrostructures of ME Wrench 1 in comparison to ME Wrench 2, 3, and 4. It has been found that the group of ME Wrench 1shows most evenly distributed proeutectoid ferrite as highest volume fraction and finest prior austenite grain size in theirsstructure. At the highest vanadium intensity and nitrogen appearance of ME Wrench 1 V(CN) precipitation dispersion occursin non-random way. Effective yield stresses have been controlled by applying different mean ferrite grain size according toHall-Petch equation. It has also been noted that grain size and yield stress are in good correlation. |
